Figure 1. Package
Table 1. Order Codes
鈻?/div>
2
DESCRIPTION
The TDA7469 is a volume tone (bass and treble) pro-
cessor 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.
Figure 2. Block Diagram
The AC signal setting is obtained by resistor net-
works and switches combined with operational ampli-
fiers.
Thanks to the used BIPOLAR/CMOS Technology,
Low Distortion, Low Noise and DC stepping are ob-
tained.
5.6K
3.3nF
68nF
68nF
0.47碌F
IN1-R
25K
MUX_R
TREBLE-R
BASSI-R
BASSO-R
gm
+6dB
梅
0dB
VOLUME
TREBLE
RB
16鈩?or
32鈩?/div>
BASS
x1
220碌F
PGND-R
PVS-R
OUT-R
25K
0.47碌F
IN2-R
25K
+6dB
梅
-63dB
SUPPLY
BASS_ALC
CONTROL
25K
0.47碌F
ALC
HALF_WAVE
RECTIFIER
I2C BUS DECODER + LATCHES
SCL
SDA
IN1-L
0.47碌F
25K
+6dB
梅
-63dB
x1
VOLUME
25K
+6dB
梅
0dB
gm
TREBLE
BASS
16鈩?or
32鈩?/div>
RB
V
REF
SUPPLY
VS
SUPPLY
PVS-L
PGND-L
25K
0.47碌F
IN2-L
220碌F
OUT-L
25K
D00AU1234
MUX_L
3.3nF
TREBLE-L
BASSI-L
68nF
68nF
5.6K
BASSO-L
GND
CREF
22碌F
June 2004
REV. 2
1/13
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