ADA4940-1ARZ-R7 Datasheet PDF - ADI

●GENERAL DESCRIPTION

●The ADA4940-1/ADA4940-2 are low noise, low distortion fully differential amplifiers with very low power consumption. They are an ideal choice for driving low power, high resolution, high performance SAR and sigma-delta (Σ-Δ) analog-to-digital converters (ADCs) with resolutions up to 16 bits from dc to 1 MHz on only 1.25 mA of quiescent current. The adjustable level of the output common-mode voltage allows the ADA4940-1/ADA4940-2 to match the input common-mode voltage of multiple ADCs. The internal common-mode feedback loop provides exceptional output balance, as well as suppression of even-order harmonic distortion products.

●FEATURES

●Small signal bandwidth: 260 MHz

●Ultralow power 1.25mA

●Extremely low harmonic distortion

●   −122 dB THD at 50 kHz

●   −96 dB THD at 1 MHz

●Low input voltage noise: 3.9 nV/√Hz

●0.35 mV maximum offset voltage

●Balanced outputs

●Settling time to 0.1%: 34 ns

●Rail-to-rail output: −VS + 0.1 V to +VS − 0.1 V

●Adjustable output common-mode voltage

●Flexible power supplies: 3 V to 7 V (LFCSP)

●Disable pin to reduce power consumption

●ADA4940-1 is available in LFCSP and SOIC packages