SC9270 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.
SC9270 Key Features
- Excellent performance
- CMOS, single 5 volt operation
- Widely operating voltage: 1.2V ~ 5.25V
- Minimum board area
- Central office quality
- Low power consumption
- Power-Down mode (SC9270D only)
- Inhibit-mode (SC9270D only)