AN5295NK Datasheet, PDF (1/11 Pages) Panasonic Semiconductor – 3-ch. sound signal processing single chip IC for TV with I2C bus

ICs for TV
AN5295NK
3-ch. sound signal processing single chip IC for TV (with I²C bus)
s 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 I²C bus.
s 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
s Applications
• Television
Unit: mm
1
30
15
16
8.6±0.3
4.7±0.25
1.0±0.25
3.3±0.25
3° to 15°
10.16±0.25
0.35^{+–00..105}
SDIP030-P-0400
s Block Diagram
Buffer
L-In ³⁰
I²C ^I2C
Off
VCA ^On
L+R
Vol.+mute
Tone Vol. ¹⁹ L-Out
L+S Add
Buffer
L−R
PS
1st
stage
LPF
amp.1
Buffer
R-In ¹
Off
L+R VCA ^On
C-sel _Loop
R−S Add
Tone Vol.
11 _R-Out
Buffer
Buffer ^{Level sense Control}
B-Out/ 28
C-In
0 dB adj.
Bass add
On
Off
Tone Vol. ¹⁸ C-Out
Buffer
1