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AF121 DTMF Bandpass Filters

AF121 Description

.~,..LL ~National The AF121 and AF122 are 6th order elliptic bandpass filters designed for use with digital DTMF detectors.

AF121 Features

* Compatible with Rockwell CRC8030 and Mostek MK5102
* Gain o±0.5 dB
* Ripple 2 dB peak to peak
* Input Impedance 175 kn min
* Power Supply ±5V to ±18V Connection Diagram Dual-In-Line Package INPUT VTOP VIEW GND Unspecified pins are for interna

📥 Download Datasheet

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Datasheet Details

Part number
AF121
Manufacturer
National Semiconductor
File Size
128.64 KB
Datasheet
AF121-NationalSemiconductor.pdf
Description
DTMF Bandpass Filters

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DTMF Bandpass Filters National Semiconductor
National Semiconductor AF121-like datasheet