www.
DataSheet.
co.
kr Semic● The Document is Applied to: CS9370DGP、CS9370DGO General Description 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 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.
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 Vo...

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