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MSM7577 - Voice Signal Level Control LSI

General Description

The MSM7577 is an LSI for Audio Signal Level adjustment for telephone set, etc.

Conventionally, its circuit has been made within individual unit, such as amplifiers, resistors and switches.

However, using this LSI allows for simple mounting and economically small space.

Key Features

  • Receiving system.
  • Built-in electrical volume Digital control (3 bit / 8 step).
  • For transmission voice, with side tone route available.
  • Mute function available. Transmitting system.
  • Built-in operational amplifier for transmission signal level adjustment.
  • Mute function available.
  • Single +2.7 V to +5.25 V power supply.
  • Power down function.
  • Package: 16-pin plastic SOP (SOP16-P-300-1.27-K) (Product name : MSM7577MS-K).

📥 Download Datasheet

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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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E2A0045-16-X1 ¡ Semiconductor ¡ Semiconductor MSM7577 Voice Signal Level Control LSI This version: Jan. 1998 MSM7577 Previous version: Nov. 1996 GENERAL DESCRIPTION The MSM7577 is an LSI for Audio Signal Level adjustment for telephone set, etc. Conventionally, its circuit has been made within individual unit, such as amplifiers, resistors and switches. However, using this LSI allows for simple mounting and economically small space. FEATURES Receiving system • Built-in electrical volume Digital control (3 bit / 8 step) • For transmission voice, with side tone route available. • Mute function available. Transmitting system • Built-in operational amplifier for transmission signal level adjustment. • Mute function available. • Single +2.7 V to +5.