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LM1971 - Digitally Controlled 62dB Audio Attenuator

Datasheet Summary

Description

The LM1971 is a digitally controlled single channel audio attenuator fabricated on a CMOS process.

62 dB.

A mute function disconnects the input from the output, providing over 100 dB of attenuation.

Features

  • a low Total Harmonic Distortion (THD) of 0.0008%, and a Dynamic Range of 115 dB, making it suitable for digital audio needs. The LM1971 is available in both 8-pin plastic DIP or SO packages. The LM1971 is controlled by a TTL/CMOS compatible 3-wire serial digital interface. The active low LOAD line enables the data input registers while the CLOCK line provides system timing. Its DATA pin receives serial data on the rising edge of each CLOCK pulse, allowing the desired attenuation setting to be se.

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Datasheet Details

Part number LM1971
Manufacturer National Semiconductor
File Size 248.30 KB
Description Digitally Controlled 62dB Audio Attenuator
Datasheet download datasheet LM1971 Datasheet
Additional preview pages of the LM1971 datasheet.

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Full PDF Text Transcription

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LM1971 Overture Audio Attenuator Series Digitally Controlled 62 dB Audio Attenuator with Mute May 1999 LM1971Overture™ Audio Attenuator Series Digitally Controlled 62 dB Audio Attenuator with/Mute General Description The LM1971 is a digitally controlled single channel audio attenuator fabricated on a CMOS process. Attenuation is variable in 1 dB steps from 0 dB to −62 dB. A mute function disconnects the input from the output, providing over 100 dB of attenuation. The performance of the device is exhibited by its ability to change attenuation levels without audible clicks or pops. In addition, the LM1971 features a low Total Harmonic Distortion (THD) of 0.0008%, and a Dynamic Range of 115 dB, making it suitable for digital audio needs.
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