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XR-2120A

Part Number	XR-2120A
Manufacturer	Exar
Description	212A/V.22 Modem Filter
Published	Apr 6, 2018
Detailed Description	XR·2120AADVANCE INFORMATION 212A/V.22 Modem Filter GENERAL DESCRIPTION The XR-2120A is a filter system for performing ...
Datasheet	XR-2120A PDF File

Overview

XR·2120AADVANCE INFORMATION 212A/V.
22 Modem Filter GENERAL DESCRIPTION The XR-2120A is a filter system for performing the complete 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.
Additional 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 t...

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