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ADA4940-1 Datasheet Low Distortion Fully Differential ADC Driver

Manufacturer: Analog Devices

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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.

Overview

Data Sheet.

Key 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 APPLI.

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