Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
6-Ch Audio Selector
PT2323
DESCRIPTION
PT2323 is a 6-Channel Audio Selector utilizing CMOS Technology specially designed for Home
Theater System. It provides a built-in 2-Channel to 6-Channel Translator, which can directly mix
traditional stereo channel to simulate a 6-Channel audio output. Single power supply (9V), I
2
C Bus
Interface as well as very low Total Harmonic Distortion (THD < 0.005%) and other features are
incorporated into a single chip thereby providing very high performance. Pin assignments and
application circuit are optimized for easy PCB layout and cost saving advantages.
FEATURES
Supply Voltage: 9V
4 Stereo Inputs
One 6-Channel Input
Maximum Input Voltage: 3.75Vrms (1kHz, THD<1%)
Low Total Harmonic Distortion, THD<0.005% (1kHz, 0.2Vrms)
Low Noise: No<4µVrms
I
2
C Bus Interface
Available in 28 Pins, DIP or SOP Package
APPLICATIONS
AV System
Mini Compo
Car Stereo
Multi-Media Audio Systems
PT2323 v1.1
-1-
July, 2003
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
6-Ch Audio Selector
PT2323
APPLICATION CIRCUIT
10
μ
f 100K
+
Rch1
+
Rch2
Rch3
Rch4
100K 10
μ
f
Lch1
Lch2
Lch3
Lch4
1
2
3
4
5
6
7
L1
L2
L3
L4
FLI
FRI
CTI
SUB I
SLI
SRI
M IX O
V CC
REF
GND
R1
R2
R3
R4
L PF_I
L PF_O
FLO
FRO
CTO
SUB O
SLO
SRO
SCL
SDA
28
27
+
26
+
25
24
23
22
21
20
19
18
17
16
15
C2
C1
10
270
Ω
(N OTE )
+
μ
f
270
Ω
(N OTE )
+
270
Ω
(N OTE )
+
270
Ω
(N OTE )
+
270
Ω
(N OTE )
+
270
Ω
(N OTE )
+
From MIX O
<<
100K
6C H
IN
8
9
10
11
12
13
6C H
OUT
<<
9V
47
μ
f
0.1
10
μ
f
14
PT2323 28Pin
Note:
I
2
C BUS
* = An external resistor (R=270Ω) must be connected in series to each of the output pins
(FLO, FRO, CTO, SUBO, SLO, SRO) and must be as close as possible to the PT2323 chip.
PT2323 v1.1
-3-
July, 2003
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
6-Ch Audio Selector
PT2323
ORDER INFORMATION
Valid Part Number
PT2323
PT2323-S
Package Type
28 PINS, DI Package (600 mil)
28 PINS, SO Package (330 mil)
Top Code
PT2323
PT2323-S
PT2323 v1.1
-4-
July, 2003