PT2348 [PTC]
4.1-Channel Audio Processor with Subwoofer; 4.1声道音频处理器，内置低音炮
| 型号： | PT2348 |
| 厂家： | 
PRINCETON TECHNOLOGY CORP |
| 描述： | 4.1-Channel Audio Processor with Subwoofer |
| 文件： | 总5页 (文件大小：231K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Preliminary
PT2348
4.1-Channel Audio Processor with Subwoofer
DESCRIPTION
FEATURES
The PT2348 is a 4.1CH audio processor designed for
Car Audio purpose. Using I2C interface controls all of
the functions. Like most of audio processor, it
equipped up to 4 stereo sources input with adjustable
gain, master volume with adaptive loudness, treble
and bass tone control.
•
•
Controlled by I²C Interface
4 Stereo Inputs (including 1 quasi-differential input)
with selectable input gain
•
2 Channels Electronic Volume： +15 to -79dB with
1dB/step
•
•
•
1 Subwoofer Output: +15 to -79dB with 1dB/step
Adjustable crossover frequency for Subwoofer
Tone Control (Bass and Treble): -15 to +15dB,
1dB/step
In a car entertainment system needs front and rear
seat individual control, the PT2348 provides separate
input source selection and output volume adjust ; a
special design mixing amp is very easy combine the
navigation system or cellular phone’s voice into the car
audio system.
•
•
•
Input Gain Control: 0 to +15dB, 1dB/step
Loudness: 0 to -15dB, 1dB/step
4 independent speaker outputs: +15 to -79dB with
1dB/step & independent programmable mix
input with 50% mixing ratio for front speakers
Low Distortion and Low Noise
•
•
APPLICATION
36-pin SSOP package
•
Car Audio
BLOCK DIAGRAM
Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
PT2348
APPLICATION CIRCUIT
SE3R
SE2R
SE1R
SE1L
1
2
3
4
5
6
7
8
9
SE3R
SE2R
SE1R
SE1L
SCL
SDA
36
35
MCU
2.2uF
2.2uF
2.2uF
2.2uF
2.2uF
2.2uF
2.2uF
2.2uF
2.2uF
GND 34
CREF 33
10uF
SE2L
VDD
SE2L
VDD
32
31
SE3L
MIX IN / SWOUT
OUTLF
SE3L
MIX/OUTSW
4.7uF
4.7uF
4.7uF
4.7uF
4.7uF
DIFFL
DIFFG
DIFFR
DIFFL
DIFFG
DIFFR
OUTLF 30
OUTLR 29
OUTRR 28
OUTRF 27
OUTSW 26
C1P 25
OUTLR
OUTRR
OUTRF
10 IGL
11 VOL
12 LDL
13 IGR
14 VOR
15 LDR
16 BL1
17 BL2
18 TRL
2.2uF
2.2uF
SWOUT
4.7uF
47nF
68n
27n
C2 24
SIN 23
2.2uF
SOUT 22
BR1 21
47nF
100n
100n
8.2n
100n
100n
8.2n
4.7K
4.7K
BR2 20
TRR 19
PRE1.0
2
July, 2009
PT2348
ORDER INFORMATION
Valid Part Number
Package Type
Top Code
PT2348-X
36 Pins, SSOP, 300mil
PT2348-X
PIN CONFIGURATION
PRE1.0
3
July, 2009
PT2348
PIN DESCRIPTION
Pin Name
SE3R
SE2R
SE1R
SE1L
SE2L
SE3L
DIFFL
DIFFG
DIFFR
IGL
I/O
I
Description
Single-ended Right Channel Input 3
Pin No.
1
I
I
I
I
I
I
I
I
O
I
I
O
I
I
I
O
I
I
O
I
Single-ended Right Channel Input 2
Single-ended Right Channel Input 1
Single-ended Left Channel Input 1
Single-ended Left Channel Input 2
Single-ended Left Channel Input 3
Pseudo Differential Stereo Input Left
Pseudo Differential Stereo Input Common
Pseudo Differential Stereo Input Right
Left Channel Input Selector Output
Left Channel Volume Input
Left Channel Loudness Input
Right Channel Input Selector Output
Right Channel Volume Input
Right Channel Loudness Input
Left Channel Bass Cap 1
Left Channel Bass Cap 2
Left Channel Treble Cap
Right Channel Treble Cap
Right Channel Bass Cap 2
Right Channel Bass Cap 1
R + L Output (-6db Gain)
Subwoofer Filter Input
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
VOL
LDL
IGR
VOR
LDR
BL1
BL2
TRL
TRR
BR2
BR1
SOUT
SIN
O
I
C2
I
Subwoofer Filter Cap 2
C1P
I
Subwoofer Filter Cap 1
OUTSW
OUTRF
OUTRR
OUTLR
OUTLF
MIX/OUTSW
VDD
O
O
O
O
O
I/O
-
Subwoofer Output
Right Front Output
Right Rear Output
Left Rear Output
Left Front Output
Mix input / Subwoofer output
Supply Voltage
CREF
GND
I
-
Analog Reference Voltage (1/2 VDD)
Ground
SDA
I
SDA INPUT
SCL
I
SCL INPUT
PRE1.0
4
July, 2009
PT2348
IMPORTANT NOTICE
Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements,
improvements, and other changes to its products and to discontinue any product without notice at any time.
PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No
circuit patent licenses are implied.
Princeton Technology Corp.
2F, 233-1, Baociao Road,
Sindian, Taipei 23145, Taiwan
Tel: 886-2-66296288
Fax: 886-2-29174598
http://www.princeton.com.tw
PRE1.0
5
July, 2009
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