TDA7469A Просмотр технического описания (PDF) - STMicroelectronics

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TDA7469A

LOW VOLTAGE ANALOG AUDIO PROCESSOR WITH HEADPHONE POWER AMPLIFIER

STMicroelectronics 

TDA7469

BLOCK DIAGRAM TDA7469D (SO16)

0.47µF

IN1-R

25K

25K

0.47µF

IN2-R

25K

25K

CMUTE

0.47µF

0.47µF

IN1-L

25K

25K

0.47µF

IN2-L

25K

25K

D01AU1262

SOFTMUTE

+6dB ÷

0dB

VOLUME

+6dB ÷

-63dB

SUPPLY

x1

PGND-R

PVS-R

220µF

16Ω or

32Ω

OUT-R

I2C BUS DECODER + LATCHES

+6dB ÷

-63dB

VOLUME

+6dB ÷

0dB

SUPPLY

x1

VREF

SUPPLY

SCL

SDA

PVS-L

PGND-L

220µF

VS

OUT-L

16Ω or

32Ω

GND

CREF

22µF

BLOCK DIAGRAM TDA7469A (SO20)

3.3nF

5.6K

68nF 68nF

TREBLE-R

BASSI-R

BASSO-R

0.47µF

IN1-R

25K

25K

0.47µF

ALC

+6dB ÷

0dB

VOLUME

+6dB ÷

-63dB

gm

TREBLE

BASS_ALC

CONTROL

HALF_WAVE

RECTIFIER

0.47µF

IN1-L

25K

25K

D01AU1261

+6dB ÷

-63dB

VOLUME

+6dB ÷

0dB

TREBLE

gm

TREBLE-L

3.3nF

RB

BASS

SUPPLY

x1

PGND-R

PVS-R

220µF

16Ω or

32Ω

OUT-R

I2C BUS DECODER + LATCHES

SCL

SDA

SUPPLY

BASS

RB

x1

VREF

SUPPLY

PVS-L

PGND-L

220µF

VS

OUT-L

16Ω or

32Ω

BASSI-L

BASSO-L GND

CREF

68nF 68nF

5.6K

22µF

2/17

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