Philips Semiconductors Linear Products
Tone decoder/phase-locked loop
TYPICAL APPLICATIONS
NOTES:
Component values (Typical)
R1 = 26.8 to 15kΩ
R2 = 24.7kΩ
R3 = 20kΩ
C1 = 0.10mF
C2 = 1.0mF 5V
C3 = 2.2mF 6V
C4 = 250µF 6V
+
567
897Hz
R1
C3
C1
R3
R2
+
C2
567
770Hz
+
567
852Hz
+
567
941Hz
+
567
1209Hz
+
567
1336Hz
+
567
1477Hz
DIGIT
1
2
3
4
5
6
7
8
9
0
*
Touch-Tone® Decoder
Product specification
NE/SE567
April 15, 1992
413