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MSM7602 - Echo Canceler

General Description

The MSM7602 is an improved version of the MSM7520 with the same basic configuration.

The MSM7602 uses a 19.2 MHz clock frequency to meet PHS, the 3 V power supply (2.7 V to 5.5 V), and compact packaging.

Also, this device adds the howling detecter control pins and main clook output pins.

Key Features

  • Handles both acoustic echoes and telephone line echoes.
  • Cancelable echo delay time: MSM7602-001 For a single chip: 23 ms (max. ) MSM7602-011 For a cascade connection (can also be used for a single chip) Master chip: 23 ms (max. ) Slave chip: 31 ms (max. ) Cancelable up to 209 ms (1 master plus 6 slaves) For a single chip: 23 ms (max. ).
  • Echo attenuation : 30 dB (typ. ).
  • Clock frequency : 19.2 MHz External input and internal oscillator circuit are provided.

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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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E2U0037-28-82 ¡ Semiconductor MSM7602 ¡ Semiconductor Echo Canceler This version: Aug. 1998 MSM7602 Previous version: Nov. 1996 GENERAL DESCRIPTION The MSM7602 is an improved version of the MSM7520 with the same basic configuration. The MSM7602 uses a 19.2 MHz clock frequency to meet PHS, the 3 V power supply (2.7 V to 5.5 V), and compact packaging. Also, this device adds the howling detecter control pins and main clook output pins. (See the Appendix) The MSM7602 is a low-power CMOS IC device for canceling echo (in an acoustic system or www.DataSheet4U.com telephone line) generated in a speech path. Echo is canceled, in digital signal processing, by estimating the echo path and generating a pseudo echo signal.