Datasheet Details
| Part number | CF8223A |
|---|---|
| Manufacturer | Nippon Precision Circuits Inc |
| File Size | 172.67 KB |
| Description | FSK Decoder and DTMF Receiver IC |
| Datasheet |
 CF8223A Datasheet
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General Description
Number 1 2 3 4 5 6 7 Name TIP RING GS AG N D RDIN RDRC RDET I/O I I O O I I/O O Function Tip input.
Connected to the telephone line through a protection circuit Ring input.
Connected to the telephone line through a protection circuit Input-stage amplifier gain-select output.
Key Features
- a power-down function for low power dissipation operation. The FSK decoder and DTMF receiver have the same performance characteristics as dedicated ICs that perform the same functions, with the added benefit of an FSK decoder/DTMF receiver auto-select function1 using the telephone tip/ring input signal. It also features a ring (call signal) signal detection circuit, making for easy construction of low power dissipation, high-performance analog telephone-related.