High-voltage amplifier supplies 8A

The hybrid PA93 amplifier/high-voltage output transistor combines a 400V supply voltage with an 8A output current. Features include a 10-mA quiescent current, a 12-MHz bandwidth, and a 4-pF input capacitance. The part’s SIP is electrically isolating, meaning you can mount it directly to heat sinks with Grafoil or another low-resistance thermal compound. Thermal resistance is 0.7°C/W ac, junction to case, and the part works to 85°C. Peripherals include a 10-mV maximum offset and a typical 200-pA input-bias current. Aiming at piezo positioning, electrostatic transducers, and programmable power supplies to 390V, the PA93 costs $98.90 (1000).

Apex Microtechnology, www.apexmicrotech.com