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LM1972 - 2-Channel 78dB Audio Attenuator

Description

The LM1972 is a digitally controlled 2-channel 78dB audio attenuator fabricated on a CMOS process.

47.5dB, 1.0dB steps from 48dB

78dB, with a mute function attenuating 104dB.

Features

  • 1.
  • 2 3-Wire Serial Interface.
  • Daisy-Chain Capability.
  • 104dB Mute Attenuation.
  • Pop and Click Free Attenuation Changes.

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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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LM1972 www.ti.com SNAS094D – APRIL 1995 – REVISED MARCH 2013 LM1972 μPot 2-Channel 78dB Audio Attenuator with Mute Check for Samples: LM1972 FEATURES 1 •2 3-Wire Serial Interface • Daisy-Chain Capability • 104dB Mute Attenuation • Pop and Click Free Attenuation Changes APPLICATIONS • Automated Studio Mixing Consoles • Music Reproduction Systems • Sound Reinforcement Systems • Electronic Music (MIDI) • Personal Computer Audio Control KEY SPECIFICATIONS • Total Harmonic Distortion + Noise: 0.003 % (max) • Frequency response: 100 kHz (−3dB) (min) • Attenuation range (excluding mute): 78 dB (typ) • Differential attenuation: ±0.25 dB (max) • Signal-to-noise ratio (ref.
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