Princeton Technology Corp.
Subwoofer Cross-Over Low Pass Filter IC
Tel : 886-2-29162151
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
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.
240 Ohms +12V
8.2 V
+1 00 µ F
C1
+
10µF
SU B-O U T
VDD
VSS
C1
C2
SOUT VREF
R IN
LIN
+
4 .7 µ F
PT2351
R1
C3
C4
C2
+
+
4 .7 µ F
100µF
R2
R-CH Input
L-CH Input
PT2351 v1.2
4
Updated Nov. 1999