LM1972 µPot 2-Channel 78dB Audio Attenuator with Mute April 1995 LM1972 µPot™ 2-Channel 78dB Audio Attenuator with Mute General Description 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 through software to fit the desired application.
The performance of a µPot is demonstrated through its excellent Signal-to-Noise Ratio, extremely low (THD+N), and high channel separation.
Each µPot contains a mute function that disconnects the input signal from the output, prov...

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