AN12942B PANASONIC
Document overview
- Manufacturer or author: Provided By digicamel.com
- PDF pages: 31
Technical content
Publication date: June 2003 1SDC00047AEB ICs for Audio Common Use AN12942B Audio signal processing IC for notebook PC Overview AN12942B is an one-chip IC for the stereo speakers which can output 1 W by 8 Ω, headphone amplifiers, line amplifiers, and electronic volumes. The AGC circuit is built-in to prevent the resonance or the vibration by the speaker’s energy and the clipping distortion what is called "broken up sound". Also the AN12942B is built-in power saving on/off function automatically detecting input signal to save the power of speaker amplifier. Features
- Speaker amplifier
1 W × 2-channel: 8 Ω, VCC = 5 V
- Built-in AGC circuit Prevention of the resonance or the vibration due to the speaker and the clipping distortion by AGC at excessive input signal (with AGC on/off switch).
- Built-in automatic power saving function. It detects input signals and switches on/off (with the on/off switch for the auto power saving).
- Built-in headphone amplifier and line amplifier Applications
- Notebook PC Package
- Dual surface implementing package (HSOP056-P-0300A) Type
- Silicon monolithic bipolar IC
Application circuit example 8 Ω L-ch. out SP save on/off Signal automatic detection function on/off 0.47 µF Switch A 0.47 µF 1 µF 1 µF 8 Ω R-ch. out 0. 47 µF 0.47 µF AGC on1/on2/off Supply voltage 5 V Power save VCC_SP Mute AGC VCC_SP MuteControl Save CTL Signal det. SP GND SP GND Offset cancel Det.GND GND VREF (SP) GND VREF 0.47 µF 1 µF100 kΩ0.47 µF 10 µF 1 µF 100 µF GND 100 µF HP mute Switch B STBY Out-L-ch. (Line) Out-R-ch. (Line) Line mute HP power save Beep in 0.47 µF In-L-ch. (Line,HP) Switch B-2 Switch A-3 BVREF EVRCTL Switch B-1 Switch A-2 Switch A-1 0. 47 µF 0. 47 µF 0. 47 µF 0. 1 µF 10 µF 10 µF Offset cancel AGC Save CTL Power save Offset cancel PRI Charge VCC Offset cancel EVR EVR Line mute Standby −9.17 dBV −9.17 dBV 1.1 times 1.1 times GND −4 dBV −4 dBV −13 dBV 6 dB 6 dB −2 dBV −3 dB −3 dB −2 dBV 14 dB 14 dB 14 dB 14 dB −2 dBV −2 dBV GND In-R-ch. (Line,HP) −10 dBV −10 dBV VCC VCC −13 dBV VCC 1 µF 1 µF 220 k 10 µF 1 µF 10 µF 1 µF 330 kΩ 1 MΩ 2 200 pF20 kΩ
Line mute on/off controlTTL inputLINE_MUTE31 Line R-channel outputOutputLINEOUT_R30 Line L-channel outputOutputLINEOUT_L29 Switch B-1OutputSwitch B-124 Switch A-3OutputSwitch A-323 Switch A-2OutputSwitch A-222 Switch A-1OutputSwitch A-121 Bias inInputBVREF20 EVR control for speaker and headphoneTTL inputEVR_CTL19 VREFInputVREF_IN18 PRI-charge level pinInputPRI_V17 Input for beep signalInputBEEP_IN34 Switch BTTL inputSwitch B33 Standby on/off controlTTL inputSTANDBY32 L-channel inputInputINPUT_L28 R-channel inputInputINPUT_R27 GNDGNDGND26 Switch B-2OutputSwitch B-225 VCCVCCVCC16 GNDGNDGND15 Offset cancel pin for headphone L-channelInputOFFSET_HPL14 Offset cancel pin for headphone R-channelInputOFFSET_HPR13 Signal automatic detection mix amplifier output OutputDAMP_OUT12 Signal input for signal automatic detectionInputDETECT_IN11 AGC demodulation pinInputAGC_CAP10 GNDGNDGND9 AGC-on level controlTTL inputAGC_LV8 Demodulation pin for signal automatic detectionInputDETECT_CAP7 GND_SP R-channelGNDGND_SP6 Speaker amplifier R-channel negative phase output (−)OutputSP_OUT_R−5 Speaker amplifier R-channel negative phase output (−)OutputSP_OUT_R−4 Speaker amplifier R-channel positive phase output (+)OutputSP_OUT_R+3 Speaker amplifier R-channel positive phase output (+)OutputSP_OUT_R+2 VCC_SP R-channelVCCVCC_SP1 DescriptionTypePin namePin No. Pin Descriptions
Pin Descriptions (continued) VCC_SP L-channelVCCVCC_SP56 Speaker amplifier L-channel positive phase output (+)OutputSP_OUT_L+55 Speaker amplifier L-channel positive phase output (+)OutputSP_OUT_L+54 Speaker amplifier L-channel negative phase output (−)OutputSP_OUT_L−53 Speaker amplifier L-channel negative phase output (−)OutputSP_OUT_L−52 GND_SP L-channelGNDGND_SP51 Speaker power save control TTL inputSP_SAVE50 Signal automatic detection on/off controlTTL inputDETECT_ON49 GNDGNDGND48 Offset cancel pin for speaker L-channelInputOFFSET_SPL47 Offset cancel pin for speaker R-channelInputOFFSET_SPR46 Speaker amplifier L-channel inputInputSP_IN_L45 Speaker amplifier R-channel inputInputSP_IN_R44 VREF_SPInputVREF_SP43 GNDGNDGND42 VCCVCCVCC41 Headphone amplifier R-channel outputOutputHP_OUT_R40 Headphone amplifier L-channel outputOutputHP_OUT_L39 GNDGNDGND38 Headphone mute on/off controlTTL inputHP_MUTE37 Headphone power save controlTTL inputHP_SAVE36 Switch ATTL inputSwitch A35 DescriptionTypePin namePin No.
Absolute Maximum Ratings AICCSupply current2 5.75VCC_SP NoteUnitRatingSymbolParameterA No. *3ºC−20 ∼+ 75ToprOperating ambient temperature5 *3ºC−55 ∼+ 150TstgStorage temperature4 *2mW517PDPower dissipation3 *1V 5.75VCC Supply voltage1 Operating Supply Voltage Range NoteUnitRangeSymbolParameter *4.50 ∼ 5.50VCC_SP V 4.50 ∼ 5.50VCC Operating supply voltage range Note) *1: The values under the condition not exceeding the above absolute maximum ratings and the power dissipation. *2: When using this IC, referring to the technical data in page 17, observe the power dissipation characteristic curve. Be sure to use the IC so that the power dissipation of the IC without heat sink will not exceed 517 mW at Ta = 75ºC. *3: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25ºC. Note) *: The values under the condition not exceeding the above absolute maximum ratings and the power dissipation.
dBV−3.0−4.0−5.01VHPROutput level R-channel21 dBV−3.0−4.0−5.0VIN =− 10.0 dBV, RL = 32 Ω Vol = 3.3 V (max), f = 1 kHz 1VHPLOutput level L-channel20 Headphone amplifier (RL = 32 Ω): L-channel, R-channel_input (pin 28, pin 27) → Headphone_output (pin 39, pin 40) dB1.00.0−1.0 VIN =− 10.0 dBV, RL = 32 Ω Vol = 3.3 V (max), f = 1 kHz R-ch./L-ch. difference 1CHBHChannel balance22 dB7670VIN =− 13.0 dBV, f = 1 kHz, RL = 8 Ω, A curve filter 1CTLSLRCross talk in L-channel18 dB10−1VIN =− 13.0 dBV, f = 1 kHz, RL = 8 Ω1CHBSChannel balance17 %0.50.041THSROutput distortion R-channel12 W0.880.7 VIN = 1 kHz, THD = 1%, RL = 8 Ω, 1VMAXSLMaximum output electric power L-channel13 W0.880.71VMAXSRMaximum output electric power R-channel14 dBV−67−76Rg = 1 kΩ, RL = 8 Ω, A curve filter 1VNSLOutput noise L-channel15 dBV−67−761VNSROutput noise R-channel16 mA18.69.3VCC = 5.00 V, at non-signal, SP and HP power save: off, at automatic distinction 1IT1BCircuit current 1B at non-signal (VCC_SP)3 mA28.021.01IT2BCircuit current 2B at non-signal (VCC)4 µA7035VCC = 5.00 V, at non-signal, at automatic distinction: off, SP and HP power save: on 1IT1CCircuit current 1C at non-signal (VCC_SP)5 mA19.014.01IT2CCircuit current 2C at non-signal (VCC)6 µA5010VCC = 5.00 V, at standby mode 1IST1Standby current 1 at non-signal (VCC_SP)7 Speaker amplifier (RL = 8 Ω): Speaker_input (pin 44, pin 45) → Speaker_output (pin 2 to pin 5, pin 52 to pin 55) Circuit current dBV6.04.02.01VSPROutput level R-channel10 %0.50.04VIN =− 13.0 dBV, f = 1 kHz, RL = 8 Ω, to THD fifth 1THSLOutput distortion L-channel11 dB76701CTLSRLCross talk in R-channel19 µA7035 VCC = 5.00 V, at non-signal, at automatic distinction: on 1IT1ACircuit current 1A at non-signal (VCC_SP)1 mA27.020.01IT2ACircuit current 2A at non-signal (VCC)2 µA500.11IST2Standby current 2 at non-signal (VCC)8 dBV6.04.02.0VIN =− 13.0 dBV, f = 1 kHz, RL = 8 Ω 1VSPLOutput level L-channel9 Limits Typ Unit Max Test circuits Note Min ConditionsSymbolParameterB No. Electrical Characteristics at VCC = 5.0 V, VCC_SP = 5.0 V Note) T a = 25°C±2°C unless otherwise specified.
Electrical Characteristics at VCC = 5.0 V, VCC_SP = 5.0 V (continued) Note) Ta = 25°C±2°C unless otherwise specified. %0.10.03VOUT =− 14 dBV, RL = 32 Ω Vol = 3.3 V (max), f = 1 kHz 1THHLOutput distortion L-channel23 %0.10.031THHROutput distortion R-channel24 dBV4.00.0THD = 1%, RL = 10 kΩ f = 1 kHz 1VMALL5Maximum output level L-channel47 dBV4.00.01VMALR5Maximum output level R-channel48 %0.030.0031THLROutput distortion R-channel46 dB0.80.0−0.8 VIN =− 10.0 dBV, RL = 10 kΩ, f = 1 kHz, R-ch./L-ch. difference 1CHBLChannel balance44 RL = 10 kΩ, f = 1 kHz, 1THLLOutput distortion L-channel45 dBV−8.4−9.2−10.0VIN =− 10.0 dBV, RL = 10 kΩ, f = 1 kHz 1VHLLOutput level L-channel42 dBV−8.4−9.2−10.01VHLROutput level R-channel43 dB90701VOLNRVolume maximum attenuation quantity R-channel41 Line amplifier part : L-channel, R-channel_input (pin 28, pin 27) → Headphone_output (pin 29, pin 30) dB2.00.0−2.0 VIN =− 20 dBV, f = 1 kHz, Vol = 1.65 V (typ) R-ch./L-ch. Difference 1VCHB Channel balance at the time of the medium gain39 dB9070VIN =− 10 dBV, f = 1 kHz, Vol = 0.0 V (min), A curve filter 1VOLNLVolume maximum attenuation quantity L-channel40 Volume part: L-channel, R-channel_input (pin 28, pin 27) → Headphone_output (pin 39, pin 40) VPP0.580.28VIN =3 . 3VPP, RL = 32 Ω 1c y c l e = 1 m s 1BEHLBeep output level L-channel35 VPP0.580.281BEHRBeep output level R-channel36 dB9070VIN =− 10 dBV, RL = 32 Ω f = 1 kHz, A curve filter 1VMUHLMute attenuation quantity L-channel33 dB90701VMUHRMute attenuation quantity R-channel34 THD = 1%, RL = 10 kΩ Vol = 3.3 V (max), f = 1 kHz dBV−27.5−30.0−32.51VOLRMedium voltage gain R-channel38 dBV−27.5−30.0−32.5VIN =− 20 dBV, f = 1 kHz, Vol = 1.65 V (typ) 1VOLLMedium voltage gain L-channel37 dB7060VIN =− 10 dBV, RL = 32 Ω f = 10 kHz, A curve filter 1CTLHLRCross talk in L-channel31 dB70601CTLHRLCross talk in R-channel32 Headphone Amplifier (RL = 32 Ω) (continued): L-channel, R-channel_input (pin 28, pin 27) → Headphone_output (pin 39, pin 40) dBV2.80.01VMAHOLMaximum output level L-channel27 dBV2.80.01VMAHORMaximum output level R-channel28 dBV−79−94 Rg = 1 kΩ, A curve filter 1VNHLOutput noise L-channel29 dBV−79−941VNHROutput noise R-channel30 dBV6.00.0THD = 1%, RL = 10 kΩ Vol = 1.65 V (typ), f = 1 kHz 1VMAHILMaximum input level L-channel25 dBV6.00.01VMAHIRMaximum input level R-channel26 Limits Typ Unit Max Test circuits Note Min ConditionsSymbolParameterB No.
Electrical Characteristics at VCC = 5.0 V, VCC_SP = 5.0 V (continued) Note) Ta = 25°C±2°C unless otherwise specified. dBV−87−105 Rg = 1 kΩ, A curve filter 1VNLLOutput noise L-channel49 dBV−87−1051VNLROutput noise R-channel50 Automatic signal detection part : L-channel, R-channel_input (pin 28, pin 27) → Signal detection preamplifier output (pin 12) V0.8GND1SPSONSpeaker power save on67 V5.52.01HPSOFHeadphone power save off66 V0.8GND1HPSONHeadphone power save on65 V5.52.01HMUOFHeadphone mute off64 V5.52.01LMUOFLine mute off72 V0.8GND1LMUONLine mute on71 V5.52.01STOFStandby off70 V0.8GND1STONStandby on69 V5.52.01SPSOFSpeaker power save off68 dB8460VIN =− 10 dBV, RL = 10 kΩ f = 10 kHz, A curve filter 1CTLLLRCross talk in L-channel51 dB84601CTLLRLCross talk in R-channel52 dB8770VIN =− 10 dBV, RL = 10 kΩ f = 1 kHz, A curve filter 1VMUHLMute attenuation quantity L-channel53 dB87701VMUHRMute attenuation quantity R-channel54 Speaker AGC part : Speaker_input (pin 44, pin 45) → Speaker_output (pin 2 to pin 5, pin 52 to pin 55) dBV7.56.04.5 VIN =− 3.0 dBV, f = 1 kHz, RL = 8 Ω 1VAGSPLSpeaker amplifier output level L-channel AGC-on155 dBV7.56.04.51VAGSPRSpeaker amplifier output level R-channel AGC-on156 dBV8.57.05.51VAGSP1LSpeaker amplifier output level L-channel AGC-on257 dBV8.57.05.51VAGSP1RSpeaker amplifier output level R-channel AGC-on258 dBV−7−10−13VIN =− 33 dBV, f = 1 kHz Vol = 1.65 V (typ) 1VSDTLPreamplifier output voltage level L-channel entry59 dBV−7−10−131VSDTRPreamplifier output voltage level R-channel entry60 dBV−53−58−63 VIN = 1 kHz Vol = 1.65 V (typ) 1VSDTTHLSignal detection limit entry voltage level L-channel 61 dBV−53−58−631VSDTTHRSignal detection limit entry voltage level R-channel62 Switch switching-over voltage level V0.8GND1HMUONHeadphone mute on63 Line amplifier part (continued) : L-channel, R-channel_input (pin 28, pin 27) → Headphone_output (pin 29, pin 30) Limits Typ Unit Max Test circuits Note Min ConditionsSymbolParameterB No.
Control Terminal, The Mode Table Note) The holding range of control voltage is shown in B No. 63 to B No. 81 of Electrical Characteristics. Mute offMute onLine mute on/off31 OnOffSwitch B33 It has priority over power saving by pin 50 more than an automatic detection. Save off (SP on) Save on (SP off)Speaker power save on/off50 OnOffSwitch A35 Voltage STB off Automatic distinction: on Save off (HP on) Mute off High Mute onHeadphone mute on/off37 Remarks Low DescriptionPin No. STB onStandby on/off32 Automatic distinction: off The signal automatic detection feature on/off49 Save on (HP off)Headphone power save on/off36 AGC: on1 High Voltage AGC: on2 Open AGC: offAt the time of time of AGC: on, it changes on level.8 Low DescriptionPin No. Electrical Characteristics at VCC = 5.0 V, VCC_SP = 5.0 V (continued) Note) Ta = 25°C±2°C unless otherwise specified. V0.8GND1ATOFSignal automatic detection feature off73 V5.52.01ATONSignal automatic detection feature on74 V5.52.01CMUONSwitch A On79 V0.8GND1CMUOFSwitch A Off78 V5.52.51AGONSpeaker-AGC on177 VOpen1AGON1Speaker-AGC on276 V5.52.01DMUONSwitch B On81 V0.8GND1DMUOFSwitch B Off80 Switch switching-over voltage level (continued) V0.5GND1AGOFSpeaker-AGC off75 Limits Typ Unit Max Test circuits Note Min ConditionsSymbolParameterB No.
- The sourcing current of the pin is indicated with “+”.
- The range that a control voltage is held in low level : Pin 33, pin 35, pin 37, pin 31, pin 32, pin 36, pin 49, pin 50 : 0 V ∼ 0.8 V Pin 8 : 0 V ∼ 0.5 V
- The range that a control voltage is held in high level : Pin 33, pin 35, pin 37, pin 31, pin 32, pin 36, pin 49, pin 50 : 2.0 V ∼ 5.5 V Pin 8 : 2.5 V ∼ 5.5 V
- Pin 31, pin 32,pin 36,pin 49 and pin 50 builds in an input voltage limitation circuit.
- In the case beyond the voltage of the input voltage limitation circuit, leakage current depends on inside resistance.
- When resistance is connected to a pin, current decreases by the sum total of resistance and internal resistance. Note) The characteristics listed above are reference values based on the IC design and are not guaranteed. Control Terminal, The Leakage Current Table at VCC = 5.0 V, VCC_SP = 5.0 V
- Design reference value Leakage current About 125 kΩ About 170 kΩ The low holding range: High impedance The high holding range: About 80 kΩ The low holding range: High impedance The high holding range: About 80 kΩ Input impedance +50µA +30µA +80µA +80µA IiH-max −20µA −20µA +2µA +2µA IiL-max At the time of AGC = on, it changes on level. Headphone mute on/off37 Switch A35 Switch B33 DescriptionPin No. 15 kΩ typ.+200µA+5µAHigh impedance+1µA−1µASpeaker power save on/off50 Leakage currentLeakage current 85 kΩ typ.+20µAHigh impedance+1µA+1µASignal automatic detection feature on/off49 16 kΩ typ.+200µA+40µAHigh impedance+1µA−1µAHeadphone power save on/off36 45 kΩ typ.+50µAHigh impedance+1µA+1µAStandby on/off32 25 kΩ typ.+100µAHigh impedance+1µA+1µALine mute on/off31 Input impedance IiH-maxIiL-max Input impedance IiH-maxIiL-max In the case beyond the voltage of the input voltage limitation circuit In the case of less than the voltage of the input voltage limitation circuit DescriptionPin No.
(With the resistance) In the range which entry limiter does not depend on, it is high impedance. The output impedance: Equal to or less than 1 Ω Impedance It controls on/off of the mute function of the line output. Line mute control31 It is GND pin for the speaker amplifier.
- Pin 6 is for R-channel.
- Pin 51 is for L-channel. Because the big electric current flows, it is desirable to separate from the GND line to the other GND pin on the board pattern. Also, it isn't connected with the substrate potential in the IC. GND_SP DC : 0.0 V 51, Output pins of speaker amplifiers. It becomes BTL output.
- Pin 54, pin 55 for L-channel positive phase output
- Pin 52, pin 53 for L-channel negative phase output
- Pin 2, pin 3 for R-channel positive phase output
- Pin 4, pin 5 for R-channel negative phase output To reduce voltage loss caused by the wire resistance in maximum output, it makes output 2 terminals. When the speaker amplifiers save power, DC voltage is also kept. Speaker output Pin 52, pin 53 Pin 2, pin 3 Positive phase Pin 54, pin 55 Pin 4, pin 5 Negative phase DC: 2.20 V AC: 4 dBV 52, 53, 54, 55, Power supply pins specifically designed for speaker amplifiers.
- Pin 1 for R-channel.
- Pin 56 for L-channel. Because the big electric current flows, it is desirable to separate from the VCC line to the other power supply pins on the board pattern. VCC_SP DC: 5.0 V DescriptionInner circuitWaveform and voltage Pin No. 25 k VCC_SP (5.0 V) 18k 3.6k Pin 52, pin 53, pin 2, pin 3 Pin 54, pin 55, pin 4, pin 5 Technical Data
- Circuit diagrams of the input/output part and pin function descriptions Note) The characteristics listed below are reference values based on the IC design and are not guaranteed.
Technical Data (continued)
- Circuit diagrams of the input/output part and pin function descriptions (continued) Note) The characteristics listed below are reference values based on the IC design and are not guaranteed. The output impedance: Equal to or less than about 10 Ω The entry impedance: About 200 kΩ Signal less time: Constant current source Signal's there being: The output impedance: About 200 Ω Impedance It is the output pin of the line amplifier. Line out AC: −9.17 dBV DC : 2.25 V 29, It is the standard voltage pin to fix the DC bias of the speaker output. It connects a condenser to remove a ripple. V REF (SP) DC: 2.20 V It is the GND pins of the signal system. It is connected with the substrate potential of the IC. Pin 15, pin 42 connect with the lead frame of the IC. GND DC: 0.0 V 15, 26, 38, 42, It connects a condenser for the peak detection. It is the circuit which detects a peak after rectifying the audio signal of the audio signal automatic detection circuit in both waves. By changing a capacity value, the time which the power saving depends on in case of the switchover which is without signal with signal's there being can be changed. Audio automatic detection detection pin: Signal nothing DC: 0.0 V Signal’s there being DC: 2.0 V DescriptionInner circuitWaveform and voltage Pin No. 400k VCC_SP (5.0 V) 400k 40k 100 VREG (4.5 V) Pin 29, Pin 30 VREG (4.5 V) 9.6k 17.4k
Technical Data (continued)
- Circuit diagrams of the input/output part and pin function descriptions (continued) Note) The characteristics listed below are reference values based on the IC design and are not guaranteed. We change an audio signal automatic detection function in on/off. In case of automatic detection off, it controls power saving by speaker with the manual with the power saving on/off pin.
- High: Function on
- Low: Function off The entry impedance: The high impedance Signal automatic detection function on/off control pin DC: The entry impedance: About 80 kΩ The output impedance: Equal to or less than about 10 Ω The entry impedance: The high impedance The entry impedance: About 18 kΩ Impedance We change a noise removal function in on/off.
- High: Function on
- Low: Function off Switch B Switch A DC: 0 V (at Open) It is the output pin of BVREF. Switch A-1 Switch A-2 Switch A-3 Switch B-1 Switch B-2 DC: V 21, 22, 23, 24, It is the input pin of BVREF. BVREF DC: V It is the voice input pins of the speaker amplifier. To make offset voltage in power saving on/off changing by the speaker amplifier little, it combines capacity. ( It makes POP noise small ). Pin 44: R-channel speaker entry Pin 45: L-channel speaker entry Speaker amplifier entry DC: 2.25 V AC: −10 dBV 44, DescriptionInner circuitWaveform and voltage Pin No. Pin 45, pin 44 18k VREF (2.25 V) VREG (4.5 V)8k 80k220k 44k VREG (4.5 V) VREG (4.5 V) Pin 21, pin 22, pin 23, pin 24, pin 25 Pin 33, pin 35 80k 250k
Technical Data (continued)
- Circuit diagrams of the input/output part and pin function descriptions (continued) Note) The characteristics listed below are reference values based on the IC design and are not guaranteed. It changes whether or not it makes this IC an operation condition or whether or not it makes it a standby.
- Low: Standby
- High: The operation condition In that the power changes a connected condition to the standby, the circuit electric current can be almost made 0. The entry impedance: About 80 kΩ Standby on/off changing SW Open DC voltage DC: 0.00 V It is the power supply (VCC) pin to supply the regulator circuit to create the inner power supply VREG with the voltage. It is separating from VCC_SP of pin 1, pin 56 fully inside. It is desirable to separate as far as it finishes coming out about the P board pattern, too. VCC DC: 5.0 V 16, The entry impedance: About 22.5 kΩ The entry impedance: About 100 kΩ Impedance It enters a main audio signal.
- Pin 27: R-channel entry
- Pin 28: L-channel entry Audio signal input DC: 2.25 V AC: −10 dBV 27, It is the voltage pin for DC bias pri_charge. Pri_charge level pin DC: 3 V DescriptionInner circuitWaveform and voltage Pin No. 80k 240k 160k VCC (5.0 V) 240k VREG (4.5 V) 13.2k Pin 28, pin 27 31.8k VREF (2.25 V) 22.5k 22.5k VREF (2.25 V)
Technical Data (continued)
- Circuit diagrams of the input/output part and pin function descriptions (continued) Note) The characteristics listed below are reference values based on the IC design and are not guaranteed. It is the signal input pin for signal automatic detection. It is possible to adjust in the direction lowers a gain by adding external resistance. The entry impedance: About 20 kΩ Signal input for signal automatic detection DC: 2.25 V AC: −10 dBV It is the output pin of the signal detection system preamplifier. The output impedance: About 10 Ω The signal detection system preamplifier output pin DC: 2.25 V AC: −10 dBV With the pin to fix the bias voltage (the operation point) of the system which the inner power supply (V REG) works, it becomes 1/2 VREG (V). To remove noise, it connects a condenser with the interval of GND. The entry impedance: About 200 kΩ VREF DC: 2.25 V It is the entry pin to enter beep signal. The same signal is entered both by L-channel and R-channel with the audio signal mix amplifier of the following paragraph. The entry impedance: About 180 kΩ Beep entry DC: 2.25 V AC: 3.3 VPP Impedance DescriptionInner circuitWaveform and voltage Pin No. 180 6.75k VREF (2.25 V) 18k 360k VCC (5 V) 440k VREG (4.5 V) 20k VREF (2.25 V)
Technical Data (continued)
- Circuit diagrams of the input/output part and pin function descriptions (continued) Note) The characteristics listed below are reference values based on the IC design and are not guaranteed. It is the condenser connection pin of the offset cancellation circuit to remove the DC offset. As the principle, it composes high pass filter by entry impedance “R” and connection condenser “C”. The entry impedance: About 80 kΩ Offset cancellation C pin DC : 2.25 V 13, 14, 46, It is the pin which controls the operation of the AGC circuit of the speaker output for the clip prevention in on/off. At the time of off , the AGC circuit does not work.
- "High" : AGC-on1
- "Open" : AGC-on2
- "Low" : AGC-off The entry impedance: About 76 kΩ AGC on1/on2/off control pin DC: It is the detection circuit to detect the signal level of the AGC circuit of the speaker output for the clip prevention. It connects a condenser for the detection. The entry impedance: Unsettled AGC detection pin DC: 0 V ∼ 1 V It is the pin which controls EVR for speaker amplifier and Headphone amplifier. The holding range with control voltage is 0 V to 3.3 V. The entry impedance: The high impedance EVR control for SP and HP DC: V Impedance DescriptionInner circuitWaveform and voltage Pin No. 80k VREG (4.5 V) VREG (4.5 V) 240k 40k 216k 96k 48k 120k 80k 80k VREG (4 V) Pin 13, pin 14, pin 46, pin 47
Technical Data (continued)
- Circuit diagrams of the input/output part and pin function descriptions (continued) Note) The characteristics listed below are reference values based on the IC design and are not guaranteed. It controls on/off of the mute function of the headphone output. The input impedance: Equal to or less than about 170 kΩ HP amplifier mute on/off control terminal DC : 2.0 V It is the pin which controls power saving by the headphone amplifier. The entry impedance: The high impedance HP amplifier power saving on/off control pin DC: It is an output pin for the headphone amplifier. The signal which was adjusted in the volume in EVR can be output by the low impedance. The output impedance: Equal to or less than about 1 Ω Output terminal for the HP amplifier DC : 2.20 V AC : −4 dBV 39, It is the pin which controls power saving by the speaker amplifier. At the time of on in addition to the control in case of automatic distinction function off, too, power saving on by pin 50 have priority over. The entry impedance: The high impedance SP amplifier power saving on/off control pin DC: Impedance DescriptionInner circuitWaveform and voltage Pin No. Pin 39, pin 40 VREG (4.5 V) 80k VREG (4.5 V) 180k VCC (5 V) 48k 16k VREG (4.5 V) 200k VCC (5 V) 70k VREG (4.5 V) 80k 220k 130k 200k 160k
Technical Data (continued)
- Power dissipation of package HSOP056-P-0300A Note) The characteristics listed above are reference values based on the IC design and are not guaranteed. 0.000 1.000 2.000 1.572 3.000 4.000 5.000 4.280 0 25 150 12550 75 100 0.862 Mounted on four layers of standard board Soldering radiation plate Rth(j-a) = 29.2°C/WMounted on standard board Nonsoldering radiation plate Rth(j-a) = 79.5°C/W Independent IC without a heat sink Rth(j-a) = 144.9°C/W Ambient temperature Ta (°C) Power dissipation PD (W) PD Ta
Technical Data (continued) yMain characteristics 1) Speaker amplifier Speaker I/O characteristics – 8 Ω Speaker I/O characteristics – 8 Ω Speaker output frequency characteristics – 8 Ω Speaker output frequency characteristics – 8 Ω SP output cross talk (L-ch. → R-ch.) (dB) 100100.1 10.01 Input frequency (L-ch.-pin 28) (kHz) VCC = 5 V VCC_SP = 5 V VIN = −10 dBV EVR = 3.3 V AGC: Off SP input (pin 44) 24 kΩ-ATT LPF: 80 kHz SP output cross talk (R-ch. → L-ch.) (dB) 100100.1 10.01 Input frequency (R-ch.-pin 27) (kHz) VCC = 5 V VCC_SP = 5 V VIN = −10 dBV EVR = 3.3 V AGC: Off SP input (pin 45) 24 kΩ-ATT LPF: 80 kHz SP output level (pin 52-pin 55, pin 2-pin 5) (dBV) −30 −10 −20 0−10−30 −20−40 Input level (L-ch., R-ch. → pin 28, pin 27) (dBV) VCC = 5 V VCC_SP = 5 V L-in, R-in → L-out, R-out EVR = 3.3 V AGC: Off SP input (pin 45, pin 44) 24 kΩ-ATT HPF: 400 Hz LPF: 20 kHz SP output level (pin 52-pin 55, pin 2-pin 5) (dBV) 100100.1 10.01 Input frequency (L-ch., R-ch. → pin 28, pin 27) (kHz) VCC = 5 V VCC_SP = 5 V L-in, R-in → L-out, R-out VIN = −10 dBV EVR = 3.3 V AGC: Off SP input (pin 45, pin 44) 24 kΩ-ATT Speaker output frequency characteristics – 8 Ω Speaker output frequency characteristics – 8 Ω SP output (pin 52-pin 55, pin 2-pin 5) distortion THD (%) 0.01 0.1 −40 −30 −20 −10 0 Input level (L-ch., R-ch. → pin 28, pin 27) (dBV) VCC = 5 V VCC_SP = 5 V L-in, R-in → L-out, R-out freq = 1 kHz EVR = 3.3 V AGC: Off SP input (pin 45, pin 44) 24 kΩ-ATT HPF: 400 Hz LPF: 20 kHz SP output (pin 52-pin 55, pin 2-pin 5) distortion THD (%) 0.01 0.1 100100.1 10.01 Input frequency (L-ch., R-ch. → pin28, pin27) (kHz) VCC = 5 V VCC_SP = 5 V L-in, R-in → L-out, R-out VIN = −10 dBV EVR = 3.3 V AGC: Off SP input (pin 45, pin 44) 24 kΩ-ATT
Technical Data (continued) y Main characteristics 2) Headphone amplifier Headphone amplifier I/O characteristics - EVR = max Headphone amplifier I/O distortion characteristics - EVR = max 0.001 0.01 0.1 100100.1 10.01 HP amplifier output (Pin 39, Pin 40) distortion THD (%) Input frquency (Pin 28, Pin 27) (kHz) VCC = 5 V VCC_SP = 5 V L-in, R-in → L-out, R-out VIN = −10dBV RL = 32 Ω EVR = 3 V −20 −10 100100.1 10.01 HP amplifier output (Pin 39, Pin 40) level (dBV) Input frequency (Pin 28, Pin 27) (kHz) VCC = 5 V VCC_SP = 5 V L-in, R-in → L-out, R-out VIN = −10 dBV RL = 32 Ω EVR = 3 V 0.001 0.01 0.1 HP amplifier output (Pin 39, Pin 40) distortion THD (%) Input level (Pin 28, Pin 27) (dBV) VCC = 5 V VCC_SP = 5 V L-in, R-in → L-out, R-out freq = 1 kHz RL = 32 Ω EVR = 3 V HP amplifier output (Pin 39, Pin 40) level (dBV)−60 −50 −40 −30 −20 −10 Input level (Pin 28, Pin 27) (dBV) VCC = 5 V VCC_SP = 5 V L-in, R-in → L-out, R-out freq = 1 kHz RL = 32 Ω EVR = 3 V Headphone amplifier frequency characteristics - EVR = max Headphone amplifier frequency characteristics - EVR = max
EVR attenuate level characteristics – Headphone output EVR attenuate distortion characteristics – Headphone output Technical Data (continued) y Main characteristics (continued) 2) Headphone amplifier (continued) Headphone amplifier I/O characteristics - EVR = typ Headphone amplifier I/O distortion characteristics - EVR = typ HP amplifier output (Pin 39, Pin 40) level (dBV)−100 −90 −80 −70 −60 −50 −40 −30 −20 −10 0 0.5 1 1.5 2 2.5 3 EVR-CTL (Pin 19) (V) VCC = 5 V VCC_SP = 5 V L-in, R-in → L-out, R-out VIN = −10 dBV freq = 1 kHz RL = 32 Ω 0.001 0.01 0.1 HP amplifier output (Pin 39, Pin 40) distortion THD (%) Input level (Pin 28, Pin 27) (dBV) VCC = 5 V VCC_SP = 5 V L-in, R-in → L-out, R-out freq = 1 kHz RL = 32 Ω EVR = 1.5 V HP amplifier output (Pin 39, Pin 40) distortion THD (%) 0.1 0.01 0 0.5 1 1.5 2 2.5 3 EVR-CTL (Pin 19) (V) VCC = 5 V VCC_SP = 5 V L-in, R-in → L-out, R-out VIN = −10 dBV freq = 1 kHz RL = 32 Ω −60 −50 −40 −30 −20 −10 HP amplifier output (Pin 39, Pin 40) level (dBV) Input level (Pin 28, Pin 27) (dBV) VCC = 5 V VCC_SP = 5 V L-in, R-in → L-out, R-out freq = 1 kHz RL = 32 Ω EVR = 1.5 V
Application Notes 1. Linear amplifier circuit block Following block diagrams is line amplifier circuit. 1) The gain of the linear amplifier system is +0.83 dB. 2) To become a connection of the standing in the row, the entry impedance of pin 28, pin 27 becomes 22.5 kΩ. It stores up that these pins also serve as the headphone entry (the impedance = 45 kΩ). 3) It is possible to adjust to the direction which lowers a gain in adding resistance to pin 28, pin 27. But, the gain of the headphone system, too, changes at the same time. If external resistance is “R” 4) By the mute control by pin 31, the line can be output in the mute. 5) For the pop sound measure at the time of power on, delay from the standby cancellation by pin 32 and cancel a linear mute. (Refer to sheet no.2 for circuit constant.) Equal to or more than 10 kΩ of loadsAbility of the output drive Note) *: The time of the warp (to 5th of THD) of 1% of output. 3.0 dBVMaximum output level Note) *: The time of the warp (to 5th of THD) of 1% of output. 1.6 dBVMaximum input level Note) *: But, it limits into the sound band range of equal to or less than 50 kHz. Equal to or less than 10 ΩOutput impedance Note) *: It done the change being of ±10% because there is a change of the inner resistance. 22.5 kΩInput impedance +0.83 dBThe input/output gain NoteDesign reference valueParameter Design reference value 2928 13.1k 31.9k Line mute +3.83 dB 3027 13.1k Headphone amplifier input terminal (Input impedance = 45 kΩ) −3 dB +3.83 dB Line output R-channel Line mute control Line output L-channel Line input L-channel Line input R-channel −3 dB 31.9k Gain = 20 log R + 13.1 kΩ+ 31.9 kΩ 31.9 kΩ 13.1k 31.9k +3.83 dB Pin 28 Pin 27 R
1) The gain of the headphone amplifier system is +6.0 dB when EVR is maximum. 2) To become a connection of the standing in the row, the entry impedance of pin 28, pin 27 becomes 22.5 kΩ. It stores up that these pin also serve as the headphone entry (the impedance = 45 kΩ). 3) It is possible to adjust to the direction which lowers a gain in adding resistance to pin 28, pin 27. But, the gain of the line system, too, changes at the same time. If external resistance is “R” 4) By the mute control by pin 37, the headphone can be output in the mute. 5) By the EVR control of pin 19, the gain of the headphone output can be variably done. 6) The entry of the beep circuit of pin 34 is a virtual grounding entry. Therefore, the external resistance is necessary. 7) For the pop sound measure at the time of power on, delay from the standby cancellation by pin 32 and cancel a headphone save mute. (Refer to sheet no.2 for circuit constant.) 8) When high impedance load is likely to be connected to headphone amplifier output, insert a resistor of 1 Ω to 4.7 kΩ so as to lower shock noise at power on or standby on/off. 45k HP mute +6 dB (at EVR = Max) Headphone amplifier input pin (Input impedance = 45 kΩ) Headphone output R-channel Headphone mute control Headphone power save control Headphone input L-channel HP save EVR+ 22.5k EVR+ +6 dB HP EVRBeep 45kHeadphone input R-channel 22.5k 6.75k
40 Headphone output
19 EVR control
−6 dB Beep input +6 dB +6 dB −6 dB Application Notes (continued) 2. Headphone amplifier circuit block Following block diagrams is headphone amplifier circuit. Pin 39 Pin 40 1k ~ 4.7k Gain = 20 log R + 45 kΩ 22.5 kΩ 45k 22.5kPin 28 Pin 27 R
NoteDesign reference valueParameter Equal to or more than 32 Ω of loadsAbility of the output drive Note) *: The time of the warp (to 5th of THD) of 1% of output. 2.4 dBVMaximum output level Note) *: The time of the warp (to 5th of THD) of 1% of output. 3.0 dBVMaximum input level Note) *: But, it limits into the sound band range of equal to or less than 50 kHz. Equal to or less than 1 ΩOutput impedance Note) *: It done the change being of ±10% because there is a change of the inner resistance. 22.5 kΩInput impedance Note) *: At EVR is maximum.+6.0 dBThe input/output gain Design reference value Application Notes (continued) 2. Headphone amplifier circuit block (continued)
- Beep signal I/O 6.75kR1 IN1 IN2 IN3 VREF ++++ −−−− Comparator Headphone amplifier Speaker amplifier Input amplifier Since input amplifier is of a reverse amplifier system, any input to pin 34 through a resistor from some circuits would not cause any drop of input impedance. Gain of in 1 Gain of in 2 Gain = 20 log 6.75 kΩ Gain = 20 log 6.75 kΩ Threshold level of comparator is 0.1 Vrms to 0.4 Vrms. Therefore, keep output of input amplifier equal to or more than 0.4 Vrms. Equal to or more than 0.4 Vrms ensures that a certain level of beep sound is output to the speaker. Beep I/O level characteristics : Speaker load - 8 Ω Beep frequency level characteristics : Speaker load - 8 Ω SP output level (R-ch., L-ch.) (Vrms) 0.001 0.1 0.01 1010.1 Beep input level (Pin 34) (Vrms) VCC = 5 V VCC_SP = 5 V Beep → L-out, R-out freq = 1 kHz Input resistance = 15 kΩ Square wave EVR = 3 V(max) AGC : Off Autimatic detection on 1.5 11 00.1 100 SP output level (R-ch., L-ch.) (Vrms) Beep input frequency (Pin 34) (kHz) VCC = 5 V VCC_SP = 5 V Beep → L-out, R-out VIN = 1.5 Vrms Input resistance = 15 kΩ Square wave EVR = 3 V(max) AGC : Off Autimatic detection on
Application Notes (continued) 3. Speaker amplifier circuit block Following block diagrams is speaker amplifier circuit. 1) The gain of the speaker amplifier system is +17.0 dB. 2) The entry impedance of pin 45, pin 44 becomes 18 kΩ. 3) It is possible to adjust to the direction which lowers a gain in adding resistance to pin 28, pin 27. Gain at insert a resistance 4) By the power save control by pin 50, the speaker can be output in the save mute. 5) For the pop sound measure at the time of power on, delay from the standby cancellation by pin 32 and cancel a speaker save mute. NoteDesign reference valueParameter Equal to or more than 8 Ω of loadsAbility of the output drive Note) *: The time of the warp (to 5th of THD) of 10% of output.
1 W : at 8 Ω of loadsMaximum output level
Note) *: But, it limits into the sound band range of equal to or less than 50 kHz. Equal to or less than 1 ΩOutput impedance Note) *: It done the change being of ±10% because there is a change of the inner resistance. 18 kΩInput impedance +17.0 dBThe input/output gain Design reference value 45 MuteSP input L-ch. AGC +10 18k SP input R-ch. −3 dB Offset cancel Det.
44 MuteAGC
−3 dB Offset cancel +14 dB 50Save SP output L-ch.+55 SP output L-ch.+ 53 SP output L-ch.− SP output L-ch.− 2 SP output R-ch.+ SP output R-ch.+ 4 SP output R-ch.− SP output R-ch.− SP save +14 dB +14 dB +14 dB Pin 44 Pin 45 R 18k Gain = 20 log + 17 dB R + 18 kΩ 18 kΩ
x VCC = 5 V x VCC_SP = 5 V x VIN = 1 Vrms x f = 1 kHz x SP R-ch. input (Pin 44) x SP out R-ch. load 8 Ω x Output : 1.34 W SP out L-ch.− Pin4 ~ Pin5 SP out R-ch.+ Pin2 ~ Pin3 x VCC = 5 V x VCC_SP = 5 V x VIN = 1 Vrms x f = 1 kHz x SP R-ch. input (Pin 44) x SP out R-ch. load 8 Ω x Output : 0.54 W SP out L-ch.− Pin4 ~ Pin5 SP out R-ch.+ Pin2 ~ Pin3 x VCC = 5 V x VCC_SP = 5 V x VIN = 1 Vrms x f = 1 kHz x SP R-ch. input (Pin 44) x SP out R-ch. load 8 Ω x Output : 0.28 W SP out L-ch.− Pin4 ~ Pin5 SP out R-ch.+ Pin2 ~ Pin3 AGC−off AGC −on1 AGC−on2 AGC off AGC on Application Notes (continued)
- The output wave at the time of AGC operation It is the following output wave form chart at the AGC operation time. Example: Output waveform of sound signal input
Application Notes (continued) 4. Automatic power save of speaker amplifier function When input signal becomes zero or very small, a speaker amplifier is automatically power save off. In the case that a detection circuit operation error to noise, insert “R” and “C” between pin 12 and pin 11 to prevent operation error. However, that insertion of “R” causes input signal to attenuate. Setting L-channel, R-channel input of −58 dBV (Vol = 1.65 V) as detection threshold, insertion of “R” would drive detection threshold value up for the above gain.. CDET of pin 7 is capacitor to determine detection time. fC = 2πRC Gain = 20 log R + 20 kΩ 20 kΩ Automatic off (Detection time until audio output) Measurement conditions
- VCC, VCC_SP = 5 V
- Signal input → Time difference until speaker output
- Measure time difference from signal input (sine wave) at no signal status until speaker output.
- Speaker output (load 8 Ω) =− 4 dBV, f = 1 kHz Automatic power save on (No sound → Time until power save) Measurement conditions
- VCC,V CC_SP = 5 V
- Input signal off → Time difference until speaker power save
- Measure time difference from switching speaker signal (sine wave) output to no input until speaker power save.
- Speaker output (load 8 Ω) =− 4 dBV, f = 1 kHz Det.capacity vs detection time (Input signal off → Speaker automatic power save on) Det.capacity vs detection time (Signal input → Speaker automatic power save off) Detection time (µsec) 200 150 100 0.1 10.01 Det. capacity (Pin 7) (µF) Detection time (sec) 1.5 0.5 0.1 10.01 Det. capacity (Pin 7) (µF)
28 EVR Signal
Det. 20 kΩ CDET 12 11 7 VREF
27 EVR
R C OFFSET CANCEL OFFSET CANCEL
player audio signal output and etc. Reference voltage input for mute Switch A Switch B Pin21 to pin25 When mute is on mode,output reference voltage input via buffer amplifier. Output impedance is equal to or less than 10 Ω. When mute is off mode, it become high impedance. Application Notes (continued) 5. Mute switch of signal line circuit Note) * : Refer to sheet no.12 for circuit of inner IC
Outside figure (Unit: mm)
- HSOP056-P-0300A (Lead-free package) 14.00 ± 0.10 0.10 ± 0.10 (0.25) (1.00) 0º to 8º 0.50 ± 0.10 Seating plane Seating plane (6.90) (5.45) 56 29 281 0.50 0.10 6.10 ± 0.10 8.10 ± 0.20 (3.70) (2.25) 0.10 M Area of no resin flash (1.00) 1.20 max.
Usage Notes
- Avoid the power line short and the ground short of the terminals.
- Especially positive phase speaker output pins (pin 2, pin 3, pin 54 and pin 55) and negative phase speaker output pins (pin 4, pin 5, pin 52 and pin 53) have the possibility of break-down caused by the power line short and the ground short. Be sure to avoid power line short, ground short and load short.
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