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CS9370 - DTMF Receiver www.DataSheet.co.kr
The Document is Applied to: CS9370DGP、CS9370DGO General Description
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 detect and decode all 16 DTMF tone-pairs into 4-bit code. External component count is minimized by on-chip provision of a differential input amplifier, clock-oscillator and latched 3-state bus interface.
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VREF 4 INH 5 PWDN 6 OSC1 7 OSC2 8 VSS 9
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
IN+ 1 IN- 2 GS 3 18 VDD 17 St/GT 16 ESt 15 StD 14 Q4 13 Q3 12 Q2 11 Q1 10 TOE
Absolute Maximum Ratings