SC9270 Datasheet | Silan Semiconductors

DTMF DEMODULATOR WITH FILTER AND DIGITAL DECODER DESCRIPTION The SC9270C/D is a plete 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 dialtone rejection. Digital counting techniques are employed in the decoder to detect and decode all 16 DTMF tone-pairs into a 4-bit code. External ponent count is minimized by on-chip provision of a differential input amplifier, clock-oscillator and latched 3-state bus interface. SOP-20-375-1.27 Features DIP-18-300-2.54 - Excellent performance - CMOS, single 5 volt operation, - Widely operating voltage: 1.2V ~ 5.25V -...