Datasheet Details
| Part number | XR-2121 |
|---|---|
| Manufacturer | Exar (now MaxLinear) |
| File Size | 370.97 KB |
| Description | Bell 212A Type Modulator |
| Datasheet | XR-2121-Exar.pdf |
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Overview: XR-2121 Bell 2 12A Type Modulator GENERAL.
| Part number | XR-2121 |
|---|---|
| Manufacturer | Exar (now MaxLinear) |
| File Size | 370.97 KB |
| Description | Bell 212A Type Modulator |
| Datasheet | XR-2121-Exar.pdf |
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The, XR-2121 is designed to provide the plete modulator function for a Bell 212A type modem.
The circuit accepts a synchronous serial data stream and generates either a 300 BPS frequency shift keyed (FSK) or a 1200 BPS differential phase shift keyed (DPSK) carrier signal.
An on-board digital-to-analog converter provides a synthesized sine wave output.
| Part Number | Description |
|---|---|
| XR-2120 | PSK Modem Filter |
| XR-2120A | 212A/V.22 Modem Filter |
| XR-2122 | Bell 212A Type Demodulator |
| XR-2123 | PSK Modulator / Demodulator |
| XR-2123A | PSK Modulator / Demodulator |
| XR-2125 | Data Buffer |
| XR-2126 | Bell 212A / CCITT V.22 Modem Filters |
| XR-2127 | Bell 212A / CCITT V.22 Modem Filters |
| XR-2128 | Bell 212A / CCITT V.22 Modem Filters |
| XR-2129 | Bell 212A / CCITT V.22 Modem Filters |