CS9370 Datasheet (Semico)

CS9370, DTMF Receiver

CS9370 DTMF Receiver The CS9370 is a complete DTMF receiver integrating both the bandsplit filter and digital decoder functions.

The filter section uses switched capacitor techniques for high-and low-group filters and dial-tone rejection.

Digital counting techniques are employed in the decoder to

CS9370 Features

* z z z z z z z VREF 4 INH 5 PWDN 6 OSC1 7 OSC2 8 VSS 9 CS9370 Min. 2.5 Typ. CMOS, 5/3 Volt operation. Excellent performance with minimum board quality. Central office quality. Low power consumption. Power-Down mode Inhibit-mode Package: DIP18, SOP18 Pin Configuration IN+ 1 IN- 2 GS 3 18 VDD 17 St