PT2351-S [PTC]
Subwoofer Cross-Over Low Pass Filter IC; 低音炮跨接低通滤波器IC
| 型号： | PT2351-S |
| 厂家： | 
PRINCETON TECHNOLOGY CORP |
| 描述： | Subwoofer Cross-Over Low Pass Filter IC |
| 文件： | 总4页 (文件大小：43K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Tel : 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Princeton Technology Corp.
Subwoofer Cross-Over Low Pass Filter IC
PT2351
DESCRIPTION
PT2351 is an 8-pin subwoofer cross-over low pass filter chip utilizing CMOS Technology having a slope rate of
-12dB/oct or -18 dB/oct. Using an external capacitor, the roll-off point can be adjusted to meet your needs or
taste. PT2351 has low distortion, high input impedance and low output impedance design. The application
circuit and pin assignments are optimized for easy PCB Layout and cost saving benefits.
FEATURES
n CMOS Technology
n Single Power Supply: 3V to 9V
n Second Order Low Pass Filter Design with Slope Rate = -12dB/oct
n Third Order Low Pass Filter Design with Slope Rate = -18 dB/oct
n Low Output Impedance (Typ. 40 Ohms)
n Least External Components
n The Roll-Off Point can be adjusted using an External Capacitor
n 2-Channel Inputs are mixed to a Single Subwoofer Output
n Available in 8-pin, SO or DIP Package
APPLICATIONS
nMulti-Media Audio Subwoofer System
nAudio Equipment
nSound Card
nHome Theater System
PT2351 v1.2
1
Updated Nov. 1999
Tel : 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Princeton Technology Corp.
Subwoofer Cross-Over Low Pass Filter IC
PT2351
PIN CONFIGURATION
V
1
2
3
4
8
7
6
5
DD
V
C
V
SS
2
REF
IN
C
1
S
OUT
R
IN
L
PT2351
ORDER INFORMATION
Valid Part Number
PT2351
Package Type
8 Pins, DIP
8 Pins, SO
PT2351-S
PT2351 v1.2
2
Updated Nov. 1999
Tel : 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Princeton Technology Corp.
Subwoofer Cross-Over Low Pass Filter IC
PT2351
SECOND ORDER LOW PASS FILTER APPLICATION CIRCUIT
The Second Order Low Pass Filter application circuit only needs very few components. The Cross-Over Filter
Point can be adjusted by modifying the values of capacitors -- C1, and C2. For better circuit characteristic, it is
recommended that C2 be twice the value of C1. Please refer to the diagram below.
+12V
240 Ohm s
+
100µF
8.2 V
V
SS
V
C
S
R
DD
1
C
2
C2
C1
V
OU T
IN
REF
+
100µF
L
IN
+
+
+
G N D
PT2351
10µF
4.7µF
4.7µF
R-CH Input
SU B-OU T
L-CH Input
PT2351 v1.2
3
Updated Nov. 1999
Tel : 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
Princeton Technology Corp.
Subwoofer Cross-Over Low Pass Filter IC
PT2351
THIRD ORDER APPLICATION CIRCUIT
If you need more High Frequency Attenuation, then you just need to add the R-C group between the capacitor
4.7µF and the Input terminals (RIN and LIN) to achieve a Third Order Frequency Response. Please refer to
the diagram below.
+12V
240 Ohm s
+
100µF
8.2 V
V
SS
V
C
S
R
DD
1
C
2
C2
C1
V
O UT
IN
REF
+
100µF
L
IN
+
+
+
PT2351
10µF
4.7µF
4.7µF
C4
C3
R2
SU B-OUT
R1
L-CH Input
R-CH Input
PT2351 v1.2
4
Updated Nov. 1999
相关型号：
©2020 ICPDF网 联系我们和版权申明