CD22202 Datasheet (Intersil Corporation) - 5V Low Power DTMF Receiver

CD22202, 5V Low Power DTMF Receiver

The CD22202 and CD22203 complete dual-tone multiple frequency (DTMF) receivers detect a selectable group of 12 or 16 standard digits.

No front-end pre-filtering is needed.

The only externally required components are an inexpensive 3.579545MHz TV “colorburst’’ crystal (for frequency reference) and a

CD22202 Features

* Central Office Quality

* No Front End Band Splitting Filters Required

* Single, Low Tolerance, 5V Supply

* Detects Either 12 or 16 Standard DTMF Digits

* Uses Inexpensive 3.579545MHz Crystal for Reference

* Excellent Speech Immunity

* Output