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XR-2120A Datasheet 212a/v.22 Modem Filter

Manufacturer: Exar (now MaxLinear)

Overview: XR·2120AADVANCE INFORMATION 212A/V.22 Modem Filter GENERAL.

General Description

The XR-2120A is a filter system for performing the plete filter function for Bell 212A or CCITI V.22 type modems.

The XR-2120A supplies both transmit and receive filtering functions for the standard 1200 Hz and 2400 Hz 212A1V.22 carrier frequencies.

Also supplied are mode switching, internal clock generators, input anti-aliasing filters, output reconstruction filters, and digitally controlled transmit and receive gains.

Key Features

  • included are CCITI notch filters, additional pin selectable equalization for worst case phone lines and complete analog loopback function. The XR-2120A utilizes silicon gate CMOS technology and switched-capacitor circuit techniques to minimize external components and enhance overall performance. The XR-2120A, available in a 24-Pin Package, is designed to operate from dual 5 volt or a single 10 volt power supply.

More Datasheets from Exar (now MaxLinear)

Part Number Description
XR-2120 PSK Modem Filter
XR-2121 Bell 212A Type Modulator
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

XR-2120A Distributor