PT2300-S

PT2300 PTC | Alldatasheet

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Technical content

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2300 V1.0 - 1 - December, 2005 2W x 2 Class AB Audio Power Amplifier PT2300

DESCRIPTION

The PT2300 is a power amplifier utilizing CMOS Technology specially designed for audio purpose. It can deliver 2W × 2 power output to the 4Ω load. The power consumption is very low in stand-by. Total harmonic distortion is lower than 0.03%. The output mode can be switched between the SE (Single-Ended) or BTL (Bridge-Tied Load) mode. The built-in volume controller can change the output volume by an external supplied DC voltage. Built-in over-temperature protection, package size is not occupies PCB space. It is suitable for small or portable products.

FEATURES

• CMOS Technology
• Stereo input
• Output power 2W × 2 (Vcc=6V, THD=1%, RL=4 Ω)
• Low harmonics distortion (0.03%)
• Include 32 steps volume controller
• SE and BTL modes operation
• Suppress the pop and click noise when mode changed
• Shutdown function, turn on can into save mode (Icc<0.7µA)
• Built-in overheat protect

APPLICATIONS

• LCD monitor (for TV)
• Portable audio
• Multimedia speakers
• Other audio applications

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2300 V1.0 - 2 - December, 2005 2W x 2 Class AB Audio Power Amplifier PT2300 BLOCK DIAGRAM Voltage Bypass and De-Pop Noise Power Management 32 steps DC Control Volume Vo1 Vin1 Bypass Vin2 Vo2 Vcc Shutdown GND DC Vol +OUT2 -OUT2 SE/BTL +OUT1 -OUT1 Ri 20K Rf 20K AMP1N AMP1P Ri 20K Rf 20K AMP2N AMP2P

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2300 V1.0 - 3 - December, 2005 2W x 2 Class AB Audio Power Amplifier PT2300 PIN CONFIGURATION Shutdown Vcc DC Vol Vo1 Vin1 Vin2 Vo2 GND +OUT1 Vcc -OUT1 Bypass SE/BTL -OUT2 Vcc +OUT2 PT2300 PIN DESCRIPTION Pin Name I/O Description Pin No. Shutdown I Shutdown pin。Entire IC into the shutdown mode when this pin connected to the Vcc, 1 Vcc Supply voltage input 2 DC Vol I DC Volume control input pin 3 Vo1 I Channel 1 output for external feedback circuit 4 Vin1 I Channel 1 audio input 5 Vin2 I Channel 2 audio input 6 Vo2 I Channel 2 output for external feedback circuit 7 GND Ground 8 +OUT2 O Channel 2 output (+) 9 Vcc Supply voltage input -OUT2 O Channel 2 output (-) 11 SE/BTL I Output mode select, connected to the Vcc for SE mode or GND for BTL mode 12 Bypass O Internal bias reference bypassing 13 -OUT1 O Channel 1 output (-) 14 Vcc O Supply voltage input 15 +OUT1 O Channel 1 output (+) 16

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2300 V1.0 - 4 - December, 2005 2W x 2 Class AB Audio Power Amplifier PT2300 FUNCTION DESCRIPTION POWER SUPPLY The operating voltage of PT2300 is from 3V to 6V, In general operation 5V is recommended. When the supply voltage less then 3V the IC can work properly, but the distortion reading will rise. After the supply voltage over 6.5V, the higher stand-by current consumption will rising the temperature on chip surface。 SHUTDOWN When the DC supply still powered the chip Vcc, pull-up the shutdown pin to the Vcc level will take the chip into the shutdown mode. After the shutdown mode is active the total current consumption is less than 0.7µA, and the all of input or output pins no voltage output. When shutdown pin set to GND, the IC is back to the normal operation. Shutdown pin Output state Vcc Shutdown ON GND Normal INPUT GAIN ADJUST The output gain of the PT2300 can be adjust by the external resistor, in normal operation 0dB gain setting is recommended, please refer to the application circuit. If the source output level is not so high (ex :< 2Vpp), input gain can be increase to get the proper volume. The minimum value of the input series resistance is 10KΩ for the modest input impedance. To make sure the input stage will not be distortion by overload, please confirm the input signal level, for the gain set please refer to the following table: Operating voltage Input gain = –6dB Input gain = 0dB Input gain = +6dB VDD=3V Vin <5Vpp Vin <2.5Vpp Vin <1.25Vpp VDD=5V Vin <8Vpp Vin<4Vpp Vin<2Vpp SE/BTL MODE SWITCHING PT2300 have two output mode, SE (Single-Ended) or BTL (Bridge-Tied Load). When driving a speaker load suggestion set to the BTL mode for get the more power output. And driving a headphone load, it can be set to SE mode and turn-off the un-work amplifier to decrease stand-by power consumption. Switching between the SE/BTL modes is controlled by the SE/BTL pin, please refer to following table: SE/BTL Mode Vcc SE GND BTL

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2300 V1.0 - 5 - December, 2005 2W x 2 Class AB Audio Power Amplifier PT2300 OVER TEMPERATURE PROTECTION The PT2300 has a built-in over temperature protection circuit, it will turn off all power output when the chip temperature over 120℃, the chip will return to normal operation automatically after the temperature cool down to 80℃. POP AND CLICK SURPPRESS A power amplifier uses single supply voltage may almost have noise on output in the power-on period. It is because of the output DC potential needs time to stable on 1/2Vcc, the period relative with the capacitance on the Bypass pin. Higher CB value will extend the stable time, and also can suppress the noise when power-on. In supply voltage=5V and CB=2.2µF, stable time is about 300ms. The value of CB also relative with the value of the DC blocking capacitor connected in input terminal. In general condition the time constant of DC blocking capacitor should be less than CB stable time. Recommend parts values please refer to application circuit. VOLUME CONTROLLER The PT2300 has a built-in 32 steps volume controller, output volume is determinate by the voltage applied on the DC Vol pin. Higher DC voltage means more output level, the relation between the volume setup and DC Vol, please refer the following table. [Supply voltage 5V, DC Vol input voltage showing by percentage of Vcc] Voltage range (%VCC) Voltage range (%VCC) Step Volume (dB) High Low Step Volume (dB) High Low 1 0 Vcc 64.0 17 -24 36.0 29.7 3 -3 63.1 60.9 19 -27 28.7 26.3 5 -6 60.4 57.6 21 -30 26.0 22.9 7 -9 56.4 53.8 23 -33 21.8 18.9 9 -12 52.1 48.5 25 -36 17.2 13.4 11 -15 47.5 45.1 27 -39 12.4 9.8 13 -18 44.7 41.6 29 -42 9.5 6.3 15 -21 40.4 37.4 31 -45 5.2 2.1 16 -22.5 37.8 35.4 32 MUTE 2.7 GND

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2300 V1.0 - 6 - December, 2005 2W x 2 Class AB Audio Power Amplifier PT2300 If an ordinary potential meter is use to decide the DC_Vol level, the volume setting is just to rotating the shaft knob of potential meter to got desire volume, an extra indicator is not necessary. The output volume is respect to the current DC_Vol level after power ON. Please take note that there is a slight variance between the volume attenuation between different PT2300 chips at the same DC control voltage. Thus, to obtain the same level of volume the control voltage may differ to from chip to chip. Applying the same voltage at the DC_Vol pin, the attenuation drift may vary up to ± 4dB for different PT2300 chips. -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 012345 DC_Volume_Voltage (V) Attenuation (dB)

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2300 V1.0 - 7 - December, 2005 2W x 2 Class AB Audio Power Amplifier PT2300 HEAT DISSIPATION During normal operation, the chip only consumes very little stand-by current. In high output power conditions, the package temperature will rise. For proper operating temperature, a modest heat sink mounted on the top side of the chip is required. The thermal resistance requirement of the heat sink demand may be obtained by the formula below: θ JA = (TJ(max) – TA) ÷ PDISS PDISS = IC dissipation power TJ (max) = Maximum chip conjunction temperature TA = external environment temperature θ JA = thermal resistance from chip conjunction to ambience environment With 60% estimated efficiency (eff), PT2300 in 2W + 2W output power dissipation is probably P DISS = ( Po ÷ eff ) - Po = 2.6W The maximum chip conjunction temperature is 150℃. Exceeding this temperature will damage the chip, assuming the outside environment air temperature is 50°C. From the chip conjunction dissipation to external environment thermal resistance θJA should be: The PT2300 chip conjunction to case thermal resistance θJC is 26℃ /W. Therefore the heat sink thermal resistance should be: θJA –θJC = 12.4℃/W In normal operating, no need extra heat sink, only utilize the ground (copper foil) of PCB to heat dissipation.

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2300 V1.0 - 8 - December, 2005 2W x 2 Class AB Audio Power Amplifier PT2300 ABSOLUTE MAXIMUM RATINGS Parameter Symbol Condition Min. Max. Unit Supply Voltage Vcc 0 7 V Operating Temperature Topr -40 +85 ℃ Storage Temperature Tstg -65 +150 ℃ Maximum Input Voltage Vimax -0.3 Vcc+0.3 V Maximum Input Current Iimax * -10 +10 mA Note: * Input pins surge current can be reached 100mA will not induce the CMOS latched up. PACKAGE THERMAL CHARACTERISTIC PACKAGE TYPE: SOP16L, 300MIL Parameter Symbol Condition Value Unit From chip conjunction dissipation to external environment θ JA 88.8 ℃/W From chip conjunction dissipation to package surface θJC Ta=25℃ 26 ℃/W

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2300 V1.0 - 9 - December, 2005 2W x 2 Class AB Audio Power Amplifier PT2300

ELECTRICAL CHARACTERISTICS

(Unless otherwise specified, Vcc=5V, bandwidth=22~22KHz) Parameter Symbol Condition Min. Typ. Max. Unit Supply Voltage Vcc 3 5 6 V SE Mode 6 8 12 BTL Mode 8 10 14 mA Operating Current Is Shutdown=ON 0.2 0.7 1 µA Two Channels Gain Error Gerr RIN=RF=20K Ω -1 0 +1 dB Po=0.2W, RL=4Ω 0.03 0.05 0.07 Po=1W, RL=4Ω 0.06 0.08 0.15THD+N THD Po=50mW, RL= 32Ω 0.03 0.05 0.07 THD=10%, RL=4Ω 1.8 2.0 2.1 BTL THD=1%, RL=4Ω, VCC=6V 1.9 2.0 2.2 W THD=1%, RL=32Ω 80 85 90 Power Output Po SE THD=10%, RL=32Ω 100 110 120 mW Signal-to-Noise Ratio SNR A-weighted 85 90 91 dB Residual Noise Vno A-weighted 25 40 50 µV Output Offset Voff DC Vol = 0V, +OUT ~ -OUT 25 50 100 mV BTL 85 88 91 Channel Separation CS SE F=1KHz 77 80 83 dB BTL 58 60 63 Power Signal-to-Noise Repel Rate PSRR SE F=1KHz 52 55 58 dB DC Vol=5V F=1KHz -1 0 +1 Volume Control Range Vatt DC Vol=17%Vcc -44 -45 -46 dB Volume Control Step Vstep Vatt=0 ~ -45dB 1.3 1.5 1.7 dB Mute mute DC Vol=0V -85 -88 -90 dB Overheat close - 120 - Temperature Protect TH Back to work - 80 - ℃ Shutdown ON 0.5 0.6 - Shutdown Voltage V SD Shutdown OFF VDD=3 ~ 5V Shutdown pin - 0.2 0.3 Vcc SE 0.8 0.9 - SE/BTL Voltage V SB BTL VDD= 3 ~ 5V - 0.1 0.2 Vcc

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2300 V1.0 - 10 - December, 2005 2W x 2 Class AB Audio Power Amplifier PT2300 APPLICATION CIRCUIT Shutdown Vcc DC Vol Vo1 Vin1 Vin2 Vo2 GND +OUT1 Vcc -OUT1 Bypass SE/BTL -OUT2 Vcc +OUT2 8 9 PT2300 ON OFF Volume Control VR10KB Vcc Vcc Shutdown SW 1 Fµ 1 Fµ 20K 20K 20K 20K 220 Fµ 100K 2.2 Fµ 220 Fµ 100K Control Pin Headphon e CH2-IN CH1-IN Vcc 10 Fµ0.1 Fµ Vcc 0.1 µ

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2300 V1.0 - 11 - December, 2005 2W x 2 Class AB Audio Power Amplifier PT2300 ORDER INFORMATION Valid Part No. Package Type Top Code PT2300 16-Pin, DIP, 300mil PT2300 PT2300-S 16-Pin, SOP, 300mil PT2300-S PT2300 (L) 16-Pin, DIP, 300mil PT2300 PT2300-S (L) 16-Pin, SOP, 300mil PT2300-S Notes: 1. (L), (C) or (S) = Lead Free 2. The Lead Free mark is put in front of the date code.

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2300 V1.0 - 12 - December, 2005 2W x 2 Class AB Audio Power Amplifier PT2300

PACKAGE INFORMATION

16 PINS, DIP, 300MIL

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2300 V1.0 - 13 - December, 2005 2W x 2 Class AB Audio Power Amplifier PT2300 Symbol Min. Nom. Max. A - - 0.210 A1 0.015 - - A2 0.115 0.130 0.195 b 0.014 0.018 0.022 b1 0.014 0.018 0.020 b2 0.045 0.060 0.070 b3 0.030 0.039 0.045 c 0.008 0.010 0.014 c1 0.008 0.010 0.011 D 0.780 0.790 0.800 D1 0.005 - - E 0.300 0.310 0.325 E1 0.240 0.250 0.280 e 0.100 bsc eA 0.300 bsc eB - - 0.430 eC 0.000 - 0.060 L 0.115 0.130 0.150 Notes: 1. Controlling Dimension: INCHES. 2. Dimensioning and tolerancing per ANSI Y14.5M-1982. 3. Dimensions A, A1 and L are measured with the package seated in JEDEC Seating Plane Gauge GS-3. 4. D, D1 and E1 dimensions do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.010 inch. 5. E and eA measured with the leads constrained to be perpendicular to datum -C-. 6. eB and eA are measured at the lead tips with the leads unconstrained. 7. N is the maximum number of terminal positions (N=16). 8. Pointed or rounded lead tips are preferred to ease insertion. 9. b2 and b3 maximum dimensions do not include dambar protrusions. Dambar protrusions shall not exceed 0.010 (0.25mm). 10. Variation AB is a full lead package. 11. Distance between leads including dambar protrusions to be 0.005 in minimum. 12. Datum plane -H- coincident with the bottom of lead where lead exits body. 13. Refer to JEDEC MS-001 Variation AB. JEDEC is the registered trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2300 V1.0 - 14 - December, 2005 2W x 2 Class AB Audio Power Amplifier PT2300

16 PINS, SOP, 300MIL

Symbol Min. Max A 2.35 2.65 A1 0.10 0.30 B 0.33 0.51 C 0.23 0.32 D 10.10 10.50 E 7.40 7.60 e 1.27 BSC H 10.00 10.65 h 0.25 0.75 L 0.40 1.27 α 0 o 8 o

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT2300 V1.0 - 15 - December, 2005 2W x 2 Class AB Audio Power Amplifier PT2300 Notes: 1. Controlling Dimension: MILLIMETER 2. Dimensioning and tolerancing per ANSI Y14.5M-1982. 3. Dimension D does not include mold flash, protrusions or gate burrs. Mold flash, protrusions and gate burrs shall not exceed 0.15mm (0.006 in) per side. 4. Dimension E does not include interlead flash or protrusions. Interlead flash and protrusionsshall not exceed 0.25 mm (0.010 in.) per side. 5. The chamfer on the body is optional. If it is not present, a visual index feature must be located within the crosshatched area. 6. L is the length of the terminal for soldering to a substrate. 7. N is the number of terminal positions (N=16). 8. The lead width B, as measured 0.36 mm (0.014in) or greater above the seating plane, shall not exceed a maximum value of 0.61mm (0.024in.) 9. Refer to JEDEC MS-013 Variation AA. JEDEC is the registered trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.