Power Operational Amplifier by Apex Microtechnology

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PA78DK Image

The PA78DK from Apex Microtechnology is a High-Speed Power Operational Amplifier that is ideal for piezoelectric positioning and actuation, deformable mirror actuators, chemical and biological stimulators, and electrostatic deflection applications. It requires an input offset voltage of 8 mV, an input offset current of 12 pA, and an input bias current of 8.5 pA. This op-amp provides an output current of over 150 mA, an open loop gain of 120 dB, and a slew rate of 350 V/µs. It is a high-voltage solution that is capable of delivering a peak output current of up to 200 mA and includes built-in patent-pending techniques to achieve very low quiescent current. This amplifier externally connects a phase compensation circuit to allow greater flexibility for the user to optimize bandwidth and stability. It protects the output stage with a user-selectable current limit resistor.

This RoHS-compliant operational amplifier requires proper heatsinking functionalities for maximum reliability and offers a power dissipation capability of up to 14 W. It is available in a surface-mount package that measures 16.27 x 7.38 mm.

Product Specifications

Product Details

  • Part Number
  • Manufacturer
    Apex Microtechnology
  • Description
    High-Speed Power Operational Amplifier


  • Type
    High Voltage Op Amp
  • Number of Channel
  • Supply Voltage
    -175 to 175 V
  • Input Offset Voltage
    8 mV
  • Input Bias Current
    8.5 pA
  • Quiescent Current
    0.2 to 2.5 mA
  • Input Offset Current
    12 pA
  • Input Voltage Noise
    500 nV/vHz
  • Output Current
    150 mA
  • Open Loop Gain
    120 dB
  • Gain Bandwidth
    1 MHz
  • CMRR
    90 to 118 dB
  • Slew Rate
    350 V/µs
  • Operating Temperature
    -40 to 125 Degree C
  • Storage Temperature
    -55 to 125 Degree C
  • RoHS Compliance
  • Industry
    Industrial, Commercial
  • Dimension
    16.27 x 7.38 mm
  • Application
    Piezoelectric Positioning And Actuation, Electrostatic Deflection, Deformable Mirror Actuators, Chemical And Biological Stimulators
  • Package
  • Package Type
    Surface Mount

Technical Documents