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.