• Part: CD22203
  • Description: 5V Low Power DTMF Receiver
  • Manufacturer: Intersil
  • Size: 49.63 KB
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Datasheet Summary

DTMF Receivers/Generators CD22202, CD22203 January 1997 5V Low Power DTMF Receiver Description The CD22202 and CD22203 plete 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 ponents are an inexpensive 3.579545MHz TV “colorburst’’ crystal (for frequency reference) and a bias resistor. Extremely high system density is possible through the use of the clock output of a crystal connected CD22202/CD22203 receiver to drive the time bases of additional receivers. This is a monolithic integrated circuit fabricated with low-power, plementary symmetry CMOS processing. It...

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