Apex Microtechnology recommends a 4-layer PCB with a solid ground plane, and thermal vias under the device to dissipate heat. A thermal pad on the bottom of the device should be connected to a heat sink or a thermal management system.
The PA85M requires a specific biasing scheme to achieve optimal linearity and efficiency. Apex Microtechnology recommends using a resistive divider network to set the bias voltage, and a temperature compensation circuit to ensure stable operation over temperature.
The maximum safe operating area (SOA) for the PA85M is not explicitly stated in the datasheet. However, Apex Microtechnology recommends limiting the device to a maximum voltage of 85V, and a maximum current of 10A to ensure reliable operation.
Apex Microtechnology recommends using external protection circuits, such as voltage clamps and current limiters, to protect the PA85M from overvoltage and overcurrent conditions. Additionally, a fuse or a current-sensing resistor can be used to detect and respond to overcurrent conditions.
Apex Microtechnology recommends storing the PA85M in a dry, cool place, away from direct sunlight and moisture. The device should be handled with anti-static precautions, and should not be subjected to mechanical stress or vibration.
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