TDA7463A_1 Datasheet, PDF (1/12 Pages) STMicroelectronics – LOW VOLTAGE TONE CONTROL DIGITALLY CONTROLLED AUDIO PROCESSOR

TDA7463A
LOW VOLTAGE TONE CONTROL
DIGITALLY CONTROLLED AUDIO PROCESSOR
1 FEATURES
■ 2 STEREO INPUT
■ 1 STEREO OUTPUT
■ TREBLE BOOST
■ BASS CONTROL
■ BASS AUTOMATIC LEVEL CONTROL
■ VOLUME CONTROL IN 1dB STEPS
■ MUTE
■ STAND-BY FUNCTION SOFTWARE
CONTROLLED
■ ALL FUNCTION ARE PROGRAMMABLE VIA
SERIAL BUS
2 DESCRIPTION
The TDA7463A 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
Figure 2. Application & Test Circuit
Figure 1. Package
SO20
Table 1. Order Codes
Part Number
TDA7463A
Package
SO20
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.
C1 0.47µF
IN2-R
C2 0.47µF
IN1-R
C14 3.3nF
R5
5.6K
100nF
100nF
TREBLE-R
C13 C12
BASSI-R
BASSO-R
17
16
15
18
RB
INPUT
-63dB
50K
SELECT CONTROL
19
TREBLE
BASS
0/-10dB
x1
x5
50K
C3 0.47µF
ALC 20
R1
1M
BASS_ALC
CONTROL
HALF_WAVE
+
RECTIFIER
I2C BUS DECODER + LATCHES
14 OUT-R
VS
VS
I2C
1
R3
R4
10 SCL
1KΩ
1KΩ
2
3
4
9 SDA
VS
DGND
SCL
SDA
C4 0.47µF
2
IN1-L
50K
C5 0.47µF
3
IN2-L
50K
D99AU1049
TREBLE
-63dB
CONTROL
BASS
x5
x1
0/-10dB
OUT-L
7
RB
VREF
SUPPLY
VS
1
4
5
6
11
12
TREBLE-L BASSI-L
BASSO-L GND
CREF
C6
3.3nF
C7
100nF
C8
100nF
R2
5.6K
C9
22µF
C10
100nF
VS
C11
100µF
June 2004
REV. 4
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