PA03 Power Operational Amplifiers


Apex power operational amplifiers offer brute-force power and self-protection against abnormal operating conditions

The super-power PA03 advances the state-of-the-art in both brute-force power and self-protection against abnormal operating conditions. Its features start with a copper dip package developed by Apex Microtechnology to extend power capabilities well beyond those attainable with the familiar TO-3 package. The increased pin count provides additional control features, while the superior thermal conductivity of copper allows substantially higher power ratings.

The PA03 incorporates innovative current limiting circuits, limiting internal power dissipation to a curve approximating the safe operating area of the power transistors. The internal current limit of 35 A is supplemented with thermal sensing, which reduces the current limit as the substrate temperature rises. Furthermore, a sub-circuit monitor's actual junction temperature (with a response time of less than ten milliseconds) and reduces the current limit further to keep the junction temperature at 175°C. The PA03 also features a laser-trimmed, high-performance FET input stage providing superior DC accuracies both initially and over the full temperature range.

Features Applications
  • MO-127 copper power dip package
  • High internal power dissipation to 500 W
  • High-voltage operation (± 75 V)
  • High current (± 30 A)
  • Internal SOA protection
  • External shutdown control
  • Linear and rotary motor drives
  • Yoke/magnetic field deflection
  • Programmable power supplies up to (± 68 V)
  • Transducer/audio to 1000 W

Power Analog Portfolio

PA03 Amplifiers

Manufacturer Part Number Description Available Quantity Datasheets
PA03 IC OPAMP POWER 1MHZ 12DIP 19