Datasheet Summary
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~National
<t ~ Semiconductor
Active Filters
AF102 Dial Tone Reject Filter
General Description
The AF102 is a fourth order elliptic highpass filter designed to reject frequencies below 650Hz. This filter rejects the 350Hz and 440Hz dial tone frequencies present on a telephone line. The unit is fully tuned and requires no external ponents
- only input, output and power supply connections.
Connection Diagram
Features
- Fully tuned
- High input impedance
- Low output impedance
- Wide power supply range
±5V to ±18V
~ IZI k1UTPUT!-INZ LPZ LPI -INI HPZ 111 111 @±l NC
13124 23 22 21 20 19 18 17 16 15114
4th OROER HIGH PASS ELLIPTIC FILTER
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I10 111 121
02 ~ 01 ~ 112 BPI NC...