LM1972 Datasheet - National Semiconductor

LM1972 Pot 2-Channel 78dB Audio Attenuator

The LM1972 is a digitally controlled 2-channel 78dB audio attenuator fabricated on a CMOS process. Each channel has attenuation steps of 0.5dB from 0dB *47.5dB, 1.0dB steps from 48dB *78dB, with a mute function attenuating 104dB. Its logarithmic attenuation curve can be customized thro.

LM1972 Features

* n n n n 3-wire serial interface Daisy-chain capability 104dB mute attenuation Pop and click free attenuation changes Applications n n n n n Automated studio mixing consoles Music reproduction systems Sound reinforcement systems Electronic music (MIDI) Personal computer audio control Key Specificat

LM1972_NationalSemiconductor.pdf