Digi-Key – Low-power 18-bit / 1.6Msps pseudo-differential serial SAR ADC (LTC2379CDE-18#PBF)

Linear Technology’s LTC2369-18, a serial 18-bit, 1.6Msps pseudo-differential SAR analog-to-digital converter (ADC) is now available from Digi-Key. The device achieves 96.5dB SNR and -120dB THD while supporting a 0V to 5V unipolar input range.

The pseudo-differential input simplifies the ADC driver requirement, enabling single-ended drive while benefiting from the reduction of unwanted signals common to both inputs. This reduces complexity and lowers the power requirements in the signal chain. Operating from a 2.5V supply, the LTC2369-18 consumes only 18mW, with a low power shutdown mode that consumes just 2.25µW, says the company.