AF102 Key Features
- Fully tuned
- High input impedance
- Low output impedance
- Wide power supply range
AF102 is Dial Tone Reject Filter manufactured by National Semiconductor.
| Part Number | Description |
|---|---|
| AF100 | Universal Active Filter |
| AF101 | High Band Splitter Filter |
| AF103 | Low Band Splitter |
| AF104 | DTMF AGC Amplifier |
| AF105 | DTMF AGC Amplifier |
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.