AN7500FHQ

AN7500FHQ PANASONIC

Document overview

• Manufacturer or author: Provided By digicamel.com
• PDF pages: 16

Technical content

ICs for Radio-Cassette, Cassette Deck AN7500FHQ Audio signal processing IC for 1.5 V headphone stereo n Overview The AN7500FHQ is a single chip IC optimum for a 1.5 V headphone stereo system including pre-amp., power amp. and Dolby B type noise reduction circuit. Current consumption in a Dolby circuit off mode has been drasti- cally reduced and an operating supply voltage has also been lowered to 0.98 V. Much fewer external components have been realized due to an integration of audio signal processing system into a single chip circuitry in a small outline package and space saving mounting of a set. n Features

• Reduction by power consumption of approximately 35% as compared with conventional products, contributing to low power consumption of a set.
• Eliminating the DC/DC converter so far needed for con- ventional system due to 1.5 V single power supply, and reducing approx. 40% of external components. This contributes to space saving in a set.
• Built-in standby switch to reduce consumption current considerably. n Applications
• Headphone stereo LQFP048-P-0707 Unit: mm 9.00–0.40 9.00–0.401.70 max. 1.40–0.10 (0.625)(0.625) 0.10–0.10 7.00–0.20 7.00–0.20 (0.75) 36 25 1(0.75) 12 0.20 +0.10 –0.05 1348 0.50 Seating plane (1.00) 0.50–0.20 0° to 10° 0.15 +0.10–0.05

AN7500FHQ ICs for Radio-Cassette, Cassette Deck n Block Diagram V REF V REF 160 W 86 kW 100 kW V REFV REF 100 kW 86 kW 160 W 200 kW 25 kW N.R. On Off FWD muteREV 25 kW 200 kW AGC Ripple filter Control Bias N.R. in (L) IREF PWR in (L) PWR in (R) N.R. out (L) SB out (L) PWR out (R) PWR out (L) STBY Power mute Low BST ASC SB out (R) N.R. out (R) N.R. in (R) GND V CC PB out (R) REV in (R) FWD in (R) FWD in (L) REV in (L) PB out (L) V REF

ICs for Radio-Cassette, Cassette Deck AN7500FHQ Parameter Symbol Rating Unit Supply voltage V CC 2.1 V Supply current I CC 20 mA Power dissipation *2 PD 249 mW Operating ambient temperature *1 T opr -20 to +70 °C Storage temperature *1 Tstg -55 to +125 °C n Absolute Maximum Ratings Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. *2: Ta = 75°C n Pin Descriptions Pin No. Description

1 FWD/REV/pre-mute control

2 Noise reduction on/off control

3 N.R. decoder input (R) 4 N.R. decoder output (R)

5 Side-chain filter (R)

6 Weighting amp. filter (R)

7 Control voltage ripple filter (R)

8 Sub-buffer amp. output (R) 9 Sub-buffer amp. input (R) 10 Sub-buffer amp. on/off control

11 Low boost on/off control

12 Power mute on/off control

13 Standby on/off control

14 Ripple filter input

15 Ripple filter base pin

16 Ripple filter output

17 AGC time constant

18 Power output (L)

19 GND pin

20 Positive power supply

21 Power output (R)

22 Low boost capacitor pin 2

23 LPF2 capacitor pin

24 Low boost capacitor pin 1

Pin No. Description

25 Power input (R)

26 LPF1 capacitor pin

27 Power input (L)

28 Sub-buffer amp. input (L) 29 Sub-buffer amp. output (L)

30 Control voltage ripple filter (L)

31 Weighting amp. filter (L)

32 Side-chain filter (L)

33 N.R. decoder output (L) 34 N.R. decoder input (L)

35 Reference current resistance pin

36 MS LPF C pin

37 MS output

38 MS filter pin

39 Playback amp. output (L) 40 Playback amp. negative feedback input (L) 41 Playback amp. REV input (L) 42 Playback amp. FWD input (L)

43 Reference voltage output

44 Playback amp. FWD input (R) 45 Playback amp. REV input (R) 46 Playback amp. negative feedback input (R) 47 Playback amp. output (R)

48 Reference voltage input

AN7500FHQ ICs for Radio-Cassette, Cassette Deck Parameter Symbol Range Unit Supply voltage V CC 0.98 * to typ. 1.2 to 2.0 V n Recommended Operating Range n Electrical Characteristics at VCC = 1.2 V, f = 1 kHz, RL = 32, Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit Voltage gain G V V O = -22.2 dBV 54 57 60 dB Circuit current 1 I CC1 V IN = 0, Rg = 2.2 kW , ¾ 3.2 5.9 mA L. BST off, N.R. off Circuit current 2 I CC2 V IN = 0, Rg = 2.2 kW , ¾ 4.4 7.1 mA L. BST off, N.R. on Circuit current 3 I CC3 Pout = 0.5 mW · 2-ch., RL = 32 W¾ 7.0 11.2 mA Circuit current 4 I CC4 Pout = 0.5 mW · 2-ch., ¾ 8.4 12.8 mA R L = 32 W , N.R. on Circuit current 5 I CC5 STBY on ¾ 15 30 mA Pre-amp. block Open-loop voltage gain G VO(PB) V O = -22.2 dBV 61 73 ¾ dB Close-loop voltage gain G VC(PB) V O = -22.2 dBV 32.5 34 35.5 dB Max. output voltage V omax(PB) THD = 1%, 30 kHz, LPF on 120 210 ¾ mV Total harmonic distortion THD (PB) V O = -22.2 dBV, 30 kHz, LPF on, ¾ 0.2 0.6 % G VC = 35 dB (NAB) Output noise voltage V NO(PB) R g = 2.2 kW , IHF-A ¾- 90 -76 dBV Channel separation CS (PB) Sincgle ch. input, 1 kHz, BPF on, 37 46 ¾ dB R g = 2.2 kW , VO = -22.2 dBV FWD/REV crosstalk CT (PB) Single ch. input, 1 kHz, BPF on, 51 59 ¾ dB R g = 2.2 kW , VO = -22.2 dBV Ripple rejection factor RR (PB) R g = 2.2 kW , VRR = -32.2 dBV, 43 53 ¾ dB fRR = 100 Hz, IRFO = 15 mA, BPF: 100 Hz, 1/4 OCT Mute attenuation amount G MUTE(PB) Ratio to VO = -22.2 dBV, ¾- 85 -70 dB pre-mute on Heavy low sound + power amp. block Gain voltage 1 G V1(PW) V O = -22.2 dBV 21 23 25 dB Low frequency boost amount G V3(PW) L. boost on/off, 15 19 23 dB f = 50 Hz, VIN = 65.2 dBV Rated output power P out THD = 10%, 30 kHz, LPF on 2.5 4.5 ¾ mW Total harmonic distortion THD (PW) Pout = 1 mW, 30 kHz, LPF on ¾ 0.35 1.3 % Channel separation 1 CS1 (PW) Sincgle ch. input, 1 kHz, BPF, 33 40 ¾ dB R g = 0, VO = -22.2 dBV Note) *: Supply voltage of VCC of 0.95 V to 0.98 V is permissible as long as it does not cause any abnormal operation such as oscillation.

ICs for Radio-Cassette, Cassette Deck AN7500FHQ n Electrical Characteristics at VCC = 1.2 V, f = 1 kHz, RL = 32, Ta = 25°C (continued) Parameter Symbol Conditions Min Typ Max Unit Heavy low sound + power amp. block (continued) Channel separation 2 CS2 (PW) Sincgle ch. input, Low boost on, 25 31 ¾ dB R g = 0, VO = -22.2 dBV, 1 kHz, BPF Output noise voltage 1 V NO1(PW) R g = 0, IHF-A ¾- 91 -86 dBV Output noise voltage 2 V NO2(PW) Low boost on, Rg = 0, IHF-A ¾- 86 -82 dBV Ripple rejection factor 1 RR1 (PW) R g = 0, VRR = -32.2 dBV, 60 72 ¾ dB fRR = 100 Hz, IRFO = 15 mA, BPF: 100 Hz, 1/4 OCT Ripple rejection factor 2 RR2 (PW) Low boost on, Rg = 0, 40 61 ¾ dB V RR = -32.2 dBV, fRR = 100 Hz, IRFO = 15 mA, BPF: 100 Hz, 1/4 OCT Input resistance R IN(PW) 7.2 9.5 12 k W Channel balance CB (PW) V O = -22.2 dBV -1.5 0 1.5 dB Mute output voltage V MUTE(PW) V IN = -32.2 dBV ¾- 96 -90 dBV AGC level V AGC V IN = -45.2 dBV, f = 100 Hz, -17.3 -14.7 -13.1 dBV R L = 32 W , AGC level to be measured at 32 W end. Output DC step DV (PW) PWR mute (pin 12) on/off -30 0 30 mV Dolby block V O = -32.2 dBV Channel balance CB (NR) (Calculation) channel ratio of the above-10 1 d B V IN N.R. decode characteristics 1 *2 G (NRD1) N.R.: On, BEF: Off, f = 10 kHz, -20 2 d B V IN = -29.6 dB, Calculation NRD = VO +40 (dB) N.R. decode characteristics 2 *2 G (NRD2) N.R.: On, BEF: Off, f = 1 kHz, -20 2 d B V IN = -23.9 dB, Calculation NRD = VO +30 (dB) V IN = -15.8 dB Calculation NRD = VO +20 (dB) V IN = -17.4 dB Calculation NRD = VO +20 (dB) N.R. decode characteristics 5 *2 G (NRD5) N.R.: On, BEF: Off, f = 10 kHz, -20 2 d B V IN = 0.4 dB, Calculation NRD = VO (dB) Note) *1: Adjust an input level to get an output level of -3.2 dBV at a measuring point (N.R. out) so that you can get 0 dB of reference input level. *2: VO in the calculating equation is the output level based on reference of 0 dB = -32.2 dBV (measuring point: N.R. out).

AN7500FHQ ICs for Radio-Cassette, Cassette Deck n Electrical Characteristics at VCC = 1.2 V, f = 1 kHz, RL = 32, Ta = 25°C (continued) Parameter Symbol Conditions Min Typ Max Unit Dolby block (continued) Total harmonic distortion 1 *3 THD1 (NR) N.R.: Off, BEF: On, f = 1 kHz, ¾ 0.2 0.5 % V IN = +10 dB, 30 kHz, LPF on Total harmonic distortion 2 *3 THD2 (NR) N.R.: On, BEF: Off, f = 1 kHz, ¾ 0.3 0.8 % V IN = +10 dB, 30 kHz, LPF on Total harmonic distortion 3 *3 THD3 (NR) N.R.: On, BEF: Off, f = 1 kHz, ¾ 0.3 1 % (Signal handling) V IN = +12 dB V CC = 1.1 V, 30 kHz, LPF on Signal to noise ratio, N.R. on *4 V NO(NR) N.R.: On, BEF: Off, 70 72 ¾ dB Input pin Rg = 15 kW , CCIR/ARM filter Sub-buffer filter characteristic *5 G VOP2 N.R.: Off, BEF: On/off, f = 6.3 kHz, ¾- 12 -8d B V IN = 0 dB Ripple filter block Ripple rejection factor RR V CC = 1.1 V, VRR = -32.2 dBV 24 30 ¾ dB fRR = 100 Hz, IRFO = 15 mA BPF: 100 Hz, 1/4 OCT DC output voltage V RPF V CC = 1.0 V, IRFO = 15 mA 0.89 0.94 ¾ V Bias block DC output voltage V REF V CC = 1.0 V 0.68 0.76 0.83 V AMS block Music detection level 1 V BS Power mute on, at V37 = 0.6 V[p-0] -50.6 -49 -47.4 dBV Music detection level 2 V MS Power mute off, at V37 = 0.6 V[p-0] -66.6 -65 -63.4 dBV Control block Standby-off voltage V STOFF Low: Power on ¾¾ 0.4 V Standby-on voltage V STON High/open: Power off 0.75 ¾¾ V Standby pin current I STBY V 13 = 0 V ¾ 16 45 mA Power mute-on threshold V MTON Low: Power mute on ¾¾ 0.3 V Power mute-off threshold V MTOFF High/open: Power mute off 1.05 ¾¾ V Power mute pin current I SW12 V 12 = 0.1 V ¾ 20 40 mA FWD/REV/pre-mute low thresholdV TH1L Low: REV ¾¾ 0.1 V FWD/REV/pre-mute high thresholdV TH1H High: Pre-mute on 1.1 ¾¾ V FWD/REV/pre-mute pin current ISW1 V 1 = 0.1 V ¾ 91 8 mA Low-boost on threshold V LBON Low: Low boost on ¾¾ 0.3 V Low-boost pin current I SW11 V 11 = 0.1 V ¾ 20 40 mA Note) *3: Measuring point: SB out *4: Measuring point: N.R. out *5: Attenuation amount referred to sub-buffer off (measuring point: SB out).

ICs for Radio-Cassette, Cassette Deck AN7500FHQ n Electrical Characteristics at VCC = 1.2 V, f = 1 kHz, RL = 32, Ta = 25°C (continued) Parameter Symbol Conditions Min Typ Max Unit Control block (continued) N.R. pin current I SW2 V 2 = 0.1 V ¾ 81 6 mA Sub-buffer on threshold V SBON Low: SB on ¾¾ 0.4 V Sub-buffer off threshold V SBOFF High/open: SB off 0.8 ¾¾ V Sub-buffer pin current I SW10 V 10 = 0.1 V ¾ 20 40 mA Pin No. Equivalent circuit Description Waveform/voltage (at VCC = 1.2 V)

1 FWD/REV/pre-mute: ¾

High voltage: VCC - 0.1 < V1-19 FWD Pin open REV Low voltage: V1-19 < 0.1 2 N.R. cont.: R IN = 33 kW N.R. on/off control 0.8 V N.R. off Pin open or high voltage: 0.8 V < V2-19 < VCC +0.3 V N.R. on Low voltage: 3 Pin 3: N.R. in (R) 34 Pin 34: N.R. in (L): N.R. decoder input R IN = 30 kW (typ.) DC 0.78 V n Terminal Equivalent Circuits V RPF GND 120 kW 120 kW 200 W Approx. 2 mA 100 kW 100 kW 100 kW V RPF GND 30 kW 50 kW V RPF V REF GND Pin 3

AN7500FHQ ICs for Radio-Cassette, Cassette Deck Pin No. Equivalent circuit Description Waveform/voltage (at VCC = 1.2 V) 4 Pin 4: N.R. out (R) R O = 300 W (typ.) 33 Pin 33: N.R. out (L): DC 0.78 V N.R. decoder output

5 Pin 5: SC in (R) R IN: Variable according

32 Pin 32: SC in (L): to inpuit signal

Side chain input DC 0.78 V 6 Pin 6: WAMP (R) DC 0.78 V

31 Pin 31: WAMP (L):

Weighting amp. filter pin

7 Pin 7: VC LPF (R) 0 V

30 Pin 30: VC LPF (L): (Add external resistor

Control voltage ripple filter pinwithout signal) n Terminal Equivalent Circuits (continued) 7 .5 kW 6.7 kW 11.6 kW V RPFV REF GND Pin 4 200 W V REF V RPF EVR GND Pin 5 270 W V RPFV REF GND Pin 6 V RPF GND Pin 7

ICs for Radio-Cassette, Cassette Deck AN7500FHQ Pin No. Equivalent circuit Description Waveform/voltage (at VCC = 1.2 V)

8 Pin 8: SB out (R) At SB on

29 Pin 29: SB out (L): R O = 160 W (typ.) Sub-buffer amp. output At SB off When pin 10 is open or of high RIN = 100 kW (typ.) voltage and output is connected to DC 0.78 V V REF with 100 kW , the buffer amp. does not operate. 9 Pin 9: SB in (R) R IN = 86 kW (typ.) 28 Pin 28: SB in (L): DC 0.78 V Sub-buffer amp. input

10 SB CNT: R IN = 6 kW

Sub-buffer amp. on/off control DC 0.78 V SB off Pin open or high voltage: 0.8 V < V10-19 < VCC +0.3 V SB on Low voltage: - 0.3 V < V10-19 < 0.4 V

11 L-BST CNT: DC 0 V

Low voltage: - 0.3 V < V10-19 < 0.3 V n Terminal Equivalent Circuits (continued) kW 160 W 100 kW V RPFV REF GND V RPF GND V REF Pin 8 Pin 9 20 kW 20 kW 50 kW 20 kW V RPF GND 10 kW 50 kW 50 kW V RPF GND

AN7500FHQ ICs for Radio-Cassette, Cassette Deck Pin No. Equivalent circuit Description Waveform/voltage (at VCC = 1.2 V)

12 PWR mute CNT: DC 0 V

Pin open or high voltage: V CC - 0.15 V < V12-19 < VCC +0.3 V PWR-mute on Low voltage: - 0.3 V < V12-19 < 0.3 V

13 STBY CNT: DC 0 V

Pin open or high voltage: 0.75 V < V13-19 < VCC +0.3 V STBY (on state) on Low voltage: - 0.3 V < V13-19 < 0.4 V 14 RF in: DC 1.0 V Ripple filter reference voltage input 15 RF base: DC 0.47 V Ripple filter 16 V RPF : DC 1.13 V Ripple filter reference voltage output n Terminal Equivalent Circuits (continued) 50 kW 50 kW V RPF GND 100 kW 100 kW V RPF GND 350 kW 70 kW 100 kW 14 kW V CC GND

ICs for Radio-Cassette, Cassette Deck AN7500FHQ Pin No. Equivalent circuit Description Waveform/voltage (at VCC = 1.2 V)

17 AGC TAU: ¾

18 Pin 18: PWR out (L)

21 Pin 21: PWR out (R):

Power amp. voltage output DC 0.6 V 19 ¾ GND pin 0 V 20 ¾ V CC power supply pin 1.2 V

22 L-BST C:

DC 0.78 V

23 LPF2-C:

DC 0.78 V n Terminal Equivalent Circuits (continued) V RPF GND 60 kW 4 kW V CC GND Pin 18 7.5 kW 15 kW 15 kW 7.5 kW V RPF GND V REF 7.5 kW 45 kW 15 kW V RPF GND V REF

AN7500FHQ ICs for Radio-Cassette, Cassette Deck Pin No. Equivalent circuit Description Waveform/voltage (at VCC = 1.2 V)

24 L-BST C1:

DC 0.78 V

25 Pin 25: PWR in (R)

27 Pin 27: PWR in (L):

Power amp. input DC 0.78 V AC -30 dBm

26 LPF1-C:

DC 0.78 V 35 I REF : DC 0.1 V Reference current resistor pin n Terminal Equivalent Circuits (continued) kW 3 kW 3 kW 30 kW V RPF GND V REF 90 kW 10 kW 90 kW 10 kW 2 kW 12 kW V RPF GND V RPF GND V RPF GND V REF V REF V RPF GND

ICs for Radio-Cassette, Cassette Deck AN7500FHQ Pin No. Equivalent circuit Description Waveform/voltage (at VCC = 1.2 V)

36 MS LPF-C: ¾

Music interval detection LPF capa- citor pin

37 MS out:

Music interval detection output 38 MS-C: DC 0.78 V Music interval detection filter capa- citor pin n Terminal Equivalent Circuits (continued) 5.7 kW 10 kW V RPF GND 400 kW V CC GND 180 kW 180 kW 180 kW 180 kW V RPF GND V REF

AN7500FHQ ICs for Radio-Cassette, Cassette Deck Pin No. Equivalent circuit Description Waveform/voltage (at VCC = 1.2 V)

39 Pin 39: PB out (L)

47 Pin 47: PB out (R):

Playback amp. output DC 0.6 V AC -30 dBm

40 Pin 40: PB NF (L)

46 Pin 46: PB NF (R):

Playback amp. negative feedback input DC 0.78 V 1 kHz -65 dBm

41 Pin 41: REV in (L)

45 Pin 45: REV in (R):

Playback amp. REV input DC 0.78 V AC -65 dBm

42 Pin 42: FWD in (L)

44 Pin 44: FWD in (R):

Playback amp. FWD input n Terminal Equivalent Circuits (continued) 25 kW 200 kW V CC GND V REF V CC GND V CC GND Pin 39 Pin 40 Pin 41

ICs for Radio-Cassette, Cassette Deck AN7500FHQ Pin No. Equivalent circuit Description Waveform/voltage (at VCC = 1.2 V) 43 V REF : DC 0.78 V Reference voltage output 48 V REF in: DC 0.78 V Reference voltage input n Terminal Equivalent Circuits (continued) V RPF GND V RPF GND

AN7500FHQ ICs for Radio-Cassette, Cassette Deck n Application Circuit Example Note) Dolby and double D logos are the trademarks of Dolby Laboratories Licensing Corporation. The use of this product requires the prior approval of Dolby Laboratories Licensing Corporation. V REF V REF 160 W 86 kW 100 kW V REFV REF 100 kW 86 kW 160 W 200 kW 25 kW N.R. On Off FWD muteREV 25 kW 200 kW AGC Ripple filter Control Bias PWR out (R) PWR out (L) STBY GND PB out (R) 2.2 mF REV in (R) FWD in (R) V REF FWD in (L) REV in (L) PB out (L) N.R. in (L) IREF 1 mF 0.01 mF 0.01 mF 1 mF 1 mF 0.1 mF 0.33 mF 1 mF 10 kW 15 kW 390 kW 2.2 kW 3 300 pF 2 700 pF PWR in (L) PWR in (R) N.R. out (L) SB out (L) Power mute Off On Off On Low BST ASC SB out (R) N.R. out (R) N.R. in (R) V CC V CC Mute FWD REV Off On Off On 1 mF 1 mF 1 mF 1 mF 22 mF 33 mF 0.022 mF 0.01 mF 0.01 mF 0.33 mF 1 mF 15 kW 390 kW 2.2 kW 3 300 pF 2 700 pF Off On 1 mF 1 mF 1 mF 33 mF 1 mF 0.022 mF 0.047 mF 6.8 kW 180 W 180 W 6.8 kW 6.8 mF 0.15 mF 6.8 mF 32 W 32 W 2.2 W 2.2 W 0.1 mF 0.1 mF 22 mF 0.047 mF 33 mF 100 mF 100 mF 2SB1295