ADA4661-2: FAQ

  • Applications

    Q What common applications are these amplifiers used in? A The ADA4661-2/ADA4666-2 are used in precision applications requiring low offset voltage and bias current, high bandwidth, lower power…
  • Crossover Distortion

    Question Does the ADA4661-2/ADA4666-2 exhibit crossover distortion? Answer The input stage comprises two differential transistor pairs, an NMOS pair and a PMOS pair. The PMOS differential pair is active…
  • Difference between the ADA4661-2 and ADA4666-2

    Q What is the major difference between the ADA4661-2 and ADA4666-2? A The ADA4661-2 is designed to have a lower offset voltage (correspondingly, higher common mode rejection) than the ADA4666-2…
  • Key specifications

    Question What are the key specifications of the ADA4661-2 and ADA4666-2? Answer The ADA4661-2 and ADA4666-2 feature high precision (low offset voltage and low input bias current), rail-to-rail input…
  • Noise Considerations

    Question What are the noise considerations when using the ADA4661-2/ADA4666-2 with high impedance sources? Answer The ADA4661-2/ADA4666-2 has a low voltage noise density of 14nV/√Hz at 10KHz. Placing…
  • Output drive current for ADA4661-2 and ADA4666-2

    Q: How high of an output current can the ADA4661-2 and ADA4666-2 drive? A: The ADA4661-2 and ADA4666-2 are capable of driving output currents up to 30 mA with only 1V of dropout voltage. However…
  • Supply Rails

    Question What happens if the input is driven beyond the supply rails? Answer The input stages have internal clamped diodes that are connected from the inputs to each supply rail. These diodes protect…

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