AF121 datasheet by National Semiconductor (now Texas Instruments).
| Part number | AF121 |
|---|---|
| Datasheet | AF121-NationalSemiconductor.pdf |
| File Size | 128.64 KB |
| Manufacturer | National Semiconductor (now Texas Instruments) |
| Description | DTMF Bandpass Filters |
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The AF121 and AF122 are 6th order elliptic bandpass filters designed for use with digital DTMF detectors. These filters are patible with tone detector circuits such as the Rockwell CRC8030 and the Mostek MK5102 DTMF digital receivers. The filters provide 40 dB separation between the high and low frequency signaling groups and the dial tone frequencies.
| Brand Logo | Part Number | Description | Other Manufacturers |
|---|---|---|---|
 |
AF1210 | Step-Down Converter | Alfa-MOS |
 |
AF1210 | ANTI-SULFURATED CHIP RESISTORS | YAGEO |
|
AF1210A | Step-Down Converter | Alfa-MOS |
|
AF1210B | Step-Down Converter | Alfa-MOS |
|
AF1218 | ANTI-SULFURATED CHIP RESISTORS | YAGEO |
View all National Semiconductor (now Texas Instruments) datasheets
| Part Number | Description |
|---|---|
| AF120 | Generalized Impedance Converter |
| AF122 | DTMF Bandpass Filters |
| AF100 | Universal Active Filter |
| AF101 | High Band Splitter Filter |
| AF102 | Dial Tone Reject Filter |
| AF103 | Low Band Splitter |
| AF104 | DTMF AGC Amplifier |
| AF105 | DTMF AGC Amplifier |
| AF132 | Dual PCM Transmit/Receive Filter |
| AF133 | PCM Transmit/Receive Filters |
