鈻?/div>
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
Figure 1. Package
SSO20P
Table 1. Order Codes
Part Number
TDA7463AD
Package
SSO20P
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.
2
DESCRIPTION
The TDA7463AD is a volume tone (bass and tre-
ble) processor for quality audio applications in Low
voltage supply portable systems.
Bass ALC (Automatic Level Control) function can
be adjusted by a dedicated pin.
Figure 2. Block Diagram
R5
5.6K
C14 3.3nF
100nF
C13
100nF
C12
TREBLE-R
17
C1 0.47碌F
IN2-R
18
INPUT
SELECT
-63dB
CONTROL
TREBLE
BASSI-R
16
BASSO-R
15
RB
50K
C2 0.47碌F
IN1-R
19
0/-10dB
x1
BASS
x5
14
OUT-R
50K
I2C
1
10
HALF_WAVE
RECTIFIER
+
I2C BUS DECODER + LATCHES
9
SDA
SCL
R3
1K鈩?/div>
R4
1K鈩?/div>
2
3
4
V
S
DGND
SCL
SDA
VS
BASS_ALC
CONTROL
C3 0.47碌F
ALC
R1
1M
20
VS
C4 0.47碌F
IN1-L
2
TREBLE
50K
-63dB
CONTROL
BASS
0/-10dB
x5
x1
7
OUT-L
C5 0.47碌F
IN2-L
3
50K
4
D99AU1049
C6
3.3nF
5
TREBLE-L
RB
6
BASSI-L
C7
100nF
V
REF
11
BASSO-L
SUPPLY
12
GND
CREF
C9
22碌F
VS
1
C10
100nF
V
S
C11
100碌F
C8
100nF
R2
5.6K
June 2004
REV. 3
1/11
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