AF122, AF121 - DTMF Bandpass Filters

National Semiconductor

Datasheet Details

Part number	AF122, AF121
Manufacturer	National Semiconductor
File Size	128.64 KB
Description	DTMF Bandpass Filters
Datasheet	AF121-NationalSemiconductor.pdf
Note	This datasheet PDF includes multiple part numbers: AF122, AF121. Please refer to the document for exact specifications by model.

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

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 internal use only and should not be used for external connection. Order Number AF121-1CJ, AF121-2CJ AF122-1CJ, AF122-2CJ 14-40 Absolute Maximum Ra.

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Published: Sep 25, 2017 |