DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µ
PC1853
MATRIX SURROUND IC WITH I
2
C BUS
The
µ
PC1853 is a phase shift matrix surround IC. Only 2 speakers on the front side implement wide sound
expansion, and by adding rear speakers, rich three-dimensional sound can obtained.
The
µ
PC1853 can perform all controls (mode switching, volume control and so on) through the I
2
C bus.
FEATURES
• Any control is possible through the I
2
C bus.
• Surround effect can be realized by only 2 speakers on the front side.
• On-chip tone (bass and treble) control circuit.
• Level-adjustable output pin for heavy bass sound.
• Level-adjustable output pin for AV amplifier.
•
µ
PC1853-01 :
•
µ
PC1853-02 :
On-chip low boost circuit.
On-chip volume and balance control circuits.
On-chip L-channel volume and R-channel volume control circuits.
APPLICATION
• TV, audio
ORDERING INFORMATION
Part Number
Package
30-pin plastic shrink DIP (400 mil)
µ
PC1853CT-01
µ
PC1853CT-02
"
The information in this document is subject to change without notice.
Document No. S10552EJ2V0DS00 (2nd edition)
(Previous No. ID-3126)
Date Published October 1995 P
Printed in Japan
©
1995
µ
PC1853
PIN CONFIGURATION (Top View)
(1)
µ
PC1853-01
Ground (for Analog)
Phase shift filter 1
Phase shift filter 2
Phase shift filter 3
Phase shift filter 4
Low-pass filter 2
R-channel treble capacitor
R-channel bass capacitor
L-channel treble capacitor
L-channel bass capacitor
Rear output
L+R signal output
R-channel signal output 1
L-channel signal output 1
Power supply
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
GND
FC1
FC2
FC3
FC4
LF2
MFI
MFO
LF1
R
in
L
in
OFC
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Monaural filter input
Monaural filter output
Low-pass filter 1
R-channel signal input
L-channel signal input
Offset absorption capacitor
Reference voltage filter
Ground (for I
2
C bus)
Slave address select
Serial data (for I
2
C bus)
Serial clock (for I
2
C bus)
Balance offset absorption capacitor
Volume offset absorption capacitor
L-channel signal output 2
R-channel signal output 2
µ
PC1853CT –01
RTC
RBC
LTC
LBC
Rear OUT
L+R OUT
R1 OUT
L1 OUT
V
CC
1 V
CC
2
GND
ADS
SDA
SCL
BAL-C
VOL-C
L2 OUT
R2 OUT
5
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