Description:The PA12 is a 10A, 90V power operational amplifier with low thermal resistance (1.4°C/W). Target applications include driving resistive, inductive and capacitive loads such as motors, magnetic deflection, transducers, and programmable power supplies. For optimum linearity, especially at low levels, the output stage is biased for Class A/B operation by using a thermistor compensated base emitter voltage multiplier circuit. The safe operating area (SOA) can be observed for all operating conditions by selecti
Apex Microtechnology recommends a 4-layer PCB with a solid ground plane, and thermal vias to dissipate heat. A thermal pad on the bottom of the package helps to reduce thermal resistance.
Apex recommends following the recommended operating conditions, using a suitable heat sink, and ensuring good thermal conductivity between the device and the heat sink. Additionally, consider using thermal interface materials to minimize thermal resistance.
The PA12A is designed for high-power applications up to 12W, but output power should be derated at higher frequencies (e.g., 3W at 100MHz). Consult the datasheet for specific derating curves.
Use a Smith chart or simulation software to design the matching networks. Apex Microtechnology provides a reference design and application notes to help with the optimization process.
The PA12A has internal ESD protection, but handling precautions are still necessary. Use an ESD wrist strap, handle the device by the package body, and avoid touching the pins or die.
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PA12A Overview
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