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MSM7543 - (MSM7544) Single Rail CODEC

General Description

The MSM7543 and MSM7544 are single-channel CODEC CMOS ICs for voice signals ranging from 300 to 3400 Hz.

These devices contain filters for A/D and D/A conversion.

Key Features

  • Single power supply: +5 V ± 5%.
  • Low power consumption Operating mode: 20 mW Typ. 31.5 mW Max. VDD = 5 V Power save mode: 4.5 mW Typ. 8 mW Max. VDD = 5 V Power down mode: 1.5 mW Typ. 3 mW Max. VDD = 5 V.
  • ITU-T Companding law MSM7543: m-law MSM7544: A-law.
  • The transmission characteristics of the devices comply with ITU-T G.714.
  • Built-in PLL eliminates a master clock.
  • Serial data rate: 64/128/256/512/1024/2048 kHz 96/192/384/768/1536/1544 kHz.

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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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E2U0015-28-81 ¡ Semiconductor MSM7543/7544 ¡ Semiconductor Single Rail CODEC This version: Aug. 1998 MSM7543/7544 Previous version: Nov. 1996 GENERAL DESCRIPTION The MSM7543 and MSM7544 are single-channel CODEC CMOS ICs for voice signals ranging from 300 to 3400 Hz. These devices contain filters for A/D and D/A conversion. Designed especially for a single-power supply and low-power applications, these devices are optimized for telephone terminals in digital wireless systems, ISDN terminals, and digital PBXs. The MSM7543 and MSM7544 use newly-designed operational amplifiers to keep small current deviations caused by power voltage fluctuations. The devices use the same transmission clocks as those used in the MSM7508B and MSM7509B.