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參數資料
| 型號： | TDA7469A |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO20 |
| 封裝： | SO-20 |
| 文件頁數： | 1/17頁 |
| 文件大小： | 150K |
| 代理商： | TDA7469A |
TDA7469
LOW VOLTAGE ANALOG AUDIO PROCESSOR WITH
HEADPHONE POWER AMPLIFIER
PRODUCT PREVIEW
2 STEREO INPUT
1 STEREO OUTPUT
TREBLE BOOST
BASS CONTROL
BASS AUTOMATIC LEVEL CONTROL
VOLUME CONTROL IN 1dB STEPS
MUTE
STAND-BY FUNCTION SOFTWARE CON-
TROLLED
ALL FUNCTION ARE PROGRAMMABLE VIA
SERIAL BUS
DESCRIPTION
The TDA7469 is a volume tone (bass and treble)
processor for quality audio applications in Low
voltage supply portable systems.
Bass ALC (Automatic Level Control) function can
be adjusted by a dedicated pin. The control of all
the functions is accomplished by serial bus.
The AC signal setting is obtained by resistor net-
works and switches combined with operational
amplifiers.
Thanks to the used BIPOLAR/CMOS Technology,
Low Distortion, Low Noise and DC stepping are
obtained.
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
June 2001
IN1-R
ALC
IN2-L
0.47
F
0.47
F
SUPPLY
VS
GND
CREF
TREBLE-L
D00AU1234
I2C BUS DECODER + LATCHES
SCL
SDA
PVS-L
PGND-L
PGND-R
PVS-R
OUT-L
OUT-R
220
F
22
F
TREBLE-R
MUX_R
MUX_L
RB
BASSI-R
BASSO-R
x1
0.47
F
TREBLE
VOLUME
+6dB
÷
0dB
+6dB
÷
-63dB
+6dB
÷
0dB
3.3nF
+6dB
÷
-63dB
TREBLE
BASS
BASS_ALC
CONTROL
HALF_WAVE
RECTIFIER
25K
VREF
gm
68nF
3.3nF
68nF
5.6K
16
or
32
16
or
32
220
F
BASSO-L
BASSI-L
IN2-R
0.47
F
25K
gm
IN1-L
0.47
F
BLOCK DIAGRAM TDA7469 (SSOP24)
ORDERING NUMBER: TDA7469 (SSOP24)
TDA7469D (SO16)
TDA7469A (SO20)
SO20
SO16
SSOP24
1/17
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