The LM1973 is a digitally controlled 3-channel 76dB audio attenuator fabricated on a CMOS process. Each channel has attenuation steps of 0.5dB from 0dB-15.5dB, 1.0dB steps from 16dB-47dB, and 2.0dB steps from 48dB- 76dB, 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, providing a minimum attenuation of 96dB. Transitions between any attenuation settings are pop free.
The LM1973's 3-wire serial digital interface is TTL and CMOS compatible; receiving data that selects a channel and the desired attenuation level
| LM1973 | |
| Special Features | 3 Channels, Digitally controlled audio attenuator |
| Pin/Package | 20SOIC |
| Approx. Price (US$) | 2.10 | 1ku |
