Datasheet

TDA7468
6/23
Figure 4. TEST CIRCUIT
IN-R3
ALC
0.47µF 0.47µF 0.47µF
SUPPLY
V
S
GND CREFTREBLE-L
MUX-L IS-L
D99AU1059A
I
2
C BUS DECODER + LATCHES
SCL
SDA
OUT-L
OUT-R
10µF
+ +
+
TREBLE-R
MUX-R
BASSI-R
IS-R
3.3nF
100nF 100nF
5.6K
BASSO-R
50K
50K
50K
1M
TREBLE
gm gm
buffer gain:
0 to 14dB gain
/ 2dB step
63dB att.
/1dB step
+ 6dB gain
-14 to +14dB
/2dB step
-14 to +14dB
/2dB step
-14 to +14dB
/2dB step
-14 to +14dB
/2dB step
-24 att.
/8dB step
-24 att.
/8dB step
63dB att.
/1dB step
+ 6dB gain
0dB 6dB 9dB
12dB
0dB 6dB 9dB
12dB
non-inverting
inverting
VARIABLE
MIX
VARIABLE
MIX
non-inverting
inverting
0dB, 6dB
10dB, 14dB
INPUT
SELECT
TREBLE
BASS
BASS
BASS_ALC
CONTROL
HALF_WAVE
RECTIFIER
IN-R2 IN-R4
23 24 25 26
2 16
0.47µF
50K 50K
V
REF
BASSO-LBASSI-L
0.47µF 0.47µF
IN-R1
50K
50K
IN-L2
0.47µF 0.47µF
50K
buffer gain:
0 to 14dB gain
/ 2dB step
INPUT
SELECT
IN-L3 IN-L1
3 4 5 6
78 9 10 11 2827
1
DGND
13 12 15 14 17
18192021
22
0.47µF
MIC-MIX
50K 50K
0.47µF
IN-L4
50K
+
+