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XR-2123 - PSK Modulator / Demodulator

Description

This series of devices provide the modulator and demodulator for phase-shifted keyed modulated signals.

The devices have an on-chip digital-to-analog converter, allowing digital external programming of Bell 212A, CCITT V.22 or V.26 functions.

Features

  • Sin.

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Other Datasheets by Exar (now MaxLinear)

Part Number Description
XR-2123A PSK Modulator / Demodulator
XR-2120 PSK Modem Filter
XR-2120A 212A/V.22 Modem Filter
XR-2121 Bell 212A Type Modulator
XR-2122 Bell 212A Type Demodulator

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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XR-2123/2123A PSK ModulatorIDemodulator GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAMS This series of devices provide the modulator and demodulator for phase-shifted keyed modulated signals. The devices have an on-chip digital-to-analog converter, allowing digital external programming of Bell 212A, CCITT V.22 or V.26 functions. The XR-2123 provides the modulator and demodulator functions. It is adequate for Bell 212A (1200 BPS only) and Bell 201 standards. The XR-2123 requires a synchronous-to-asynchronous converter and scrambler-descrambler for the digital portion of the modem for 212A applications. Level shifters and filtering is required for the analog portion. The X R-2123A provides the ±7 Hz carrier capture range needed for V.22 and V.26. It is externally identical to the XR-2123.
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