ICs for TV
1
AN5295NK
3-ch. sound signal processing single chip IC for TV (with I
2
C bus)
n Overview
The AN5295NK is a television-use 3-ch. sound sig-
nal processing IC which incorporates volume, tone con-
trol (L/R/C 3-ch.), and surround sound, sound AGC,
lower sound enforce (L/R 2-ch.) functions. All of the func-
tions (including changeover switch) including external I/
O port can be controlled by I
2
C bus.
n Features
• 3-ch. of volumes can be controlled independently (max.
attenuation is 75 dB or more)
• Center output can be switched, ether center input or in-
side L+R signal (for HDTV)
• Lower sound enforce effect (frequency and gain) can be
adjusted with external parts
• With L+R output
n Applications
• Television
SDIP030-P-0400
Unit: mm
n Block Diagram
3 to 15
26.7±0.3
0.5±0.1
1.0±0.25
3.3±0.254.7±0.25
1
15
30
16
0.35
–0.05
+0.1
8.6±0.3
0.9±0.25
10.16±0.25
1.778
30
1
28
L-In
R-In
B-Out/
C-In
L-Out
R-Out
C-Out
19
11
18
29
2
15 14
6
17
7 8
12 13 16 25 23
3 4 5
27 26 24
9
10 21 20
A
GC Adj.
LS1 LS2
ADD
B-In
B-Gain
RB
RT
CB CT
22
V
CC
GND SD
A
SCL V
REF
Extension I/O (H/L) DAC
1
PS STB SR
V
SL
V
SCV STT LB LT
I
2
C
I
2
C
Loop
C-sel
Bass add
0 dB adj.
VCA
VCAL+R
Vol.
Vol.
Buffer
Off
On
On
Off
Buffer
Buffer
Tone
Tone
Add
Add
L+S
R- S
LPF
amp.1
PS
1st
stage
L- RL+R
Buffer
Vol.+mute
Buffer
Vol.Tone
Buffer
ControlLevel sense
On
Off