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LMC1982 - Digitally-Controlled Stereo Tone and Volume Circuit with Two Selectable Stereo Inputs

General Description

The LMC1982 is a monolithic integrated circuit that provides volume, balance, tone (bass and treble), enhanced stereo, and loudness controls and selection between two pairs of stereo inputs.

These functions are digitally controlled through a three-wire communication interface.

Key Features

  • n Low noise and distortion n Two pairs of stereo inputs Block and Connection Diagrams DS011028-1 DNR ® is a registered trademark of National Semiconductor Corporation. Dolby ® is a registered trademark of Dolby Labs. © 1999 National Semiconductor Corporation DS011028 www. national. com Absolute Maximum Ratings (Notes 1, 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Vol.

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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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LMC1982 Digitally-Controlled Stereo Tone and Volume Circuit with Two Selectable Stereo Inputs December 1994 LMC1982 Digitally-Controlled Stereo Tone and Volume Circuit with Two Selectable Stereo Inputs General Description The LMC1982 is a monolithic integrated circuit that provides volume, balance, tone (bass and treble), enhanced stereo, and loudness controls and selection between two pairs of stereo inputs. These functions are digitally controlled through a three-wire communication interface. There are two digital inputs for easy interface to other audio peripherals such as stereo decoders. The LMC1982 is designed for line level input signals (300 mV–2V) and has a maximum gain of −0.5 dB. Volume is set at minimum and tone controls are flat when supply voltage is first applied.