5v Low Power Dtmf Receiver Corporation

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-ltering is needed. The only externally required components are an inexpensive 3.579545MHz TV colorburst crystal (for frequency refer- ence) and a bias resistor. Extremely high system density is possible through the use of the Clock output of a crystal con- nected CD22202 CD22203 receiver to drive the time bases of additional receivers. This is a monolithic integrated circuit fabricated with low-power, complementary symmetry CMOS processing. It only requires a single low tolerance power supply. The CD22202 and CD22203 employ state-of-the-art circuit technology to combine the digital and Analog functions on the same CMOS chip using a standard digital semiconductor process. The Analog input is preprocessed by 60Hz reject and band splitting lters and then hard limited to provide AGC. Eight Bandpass lters detect the individual Tones The digital post processor times the Tone durations and provides the correctly coded digital outputs. Outputs Interface directly to standard CMOS circuitry and are three-state enabled to facilitate bus oriented architectures. By Intersil Corporation
CD22202 's PackagesCD22202 's pdf datasheet
CD22202E PDIP
CD22203E PDIP
CD22203




CD22202 Pinout, Pinouts
CD22202 pinout,Pin out
This is one package pinout of CD22202,If you need more pinouts please download CD22202's pdf datasheet.

CD22202 circuits will be updated soon..., now you can download the pdf datasheet to check the circuits!

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