Apex Microtechnology PA41A
The PA41/42 are high voltage monolithic MOSFET operational amplifiers achieving performance features previously found only in hybrid designs while increasing reliability. The safe operating area (SOA) has no second breakdown limitations and can be observed with all type loads by choosing an appropriate current limiting resistor. The PA41 is packaged in a hermetically sealed TO-3 and all circuitry is isolated from the case by an aluminum nitride (AlN) substrate.FEATURES
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● MONOLITHIC MOS TECHNOLOGY LOW COST HIGH VOLTAGE OPERATION—350V LOW QUIESCENT CURRENT—2mA NO SECOND BREAKDOWN HIGH OUTPUT CURRENT—120 mA PEAK AVAILABLE IN DIE FORM—PA41DIE TYPICAL APPLICATION R V IN 20R +175 2.2K 10pF A1 PA41/42 R CL 10pF A2 PA41/42 2.2K 20R 20R +175
APPLICATIONS
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● PIEZO ELECTRIC POSITIONING ELECTROSTATIC TRANSDUCER & DEFLECTION DEFORMABLE MIRROR FOCUSING BIOCHEMISTRY STIMULATORS COMPUTER TO VACUUM TUBE INTERFACE R CL Rn Cn
DESCRIPTION
Inputs are protected from excessive common mode and differential mode voltages. External compensation provides the user flexibility in choosing optimum gain and bandwidth for the application. The PA42 is packaged in APEX’s hermetic ceramic SIP10 package. PIEZO 180 TRANSDUCER 180 100 Ω 100 Ω 330pF 330pF –175 LOW COST 660V p-p PIEZO DRIVE –175 Two PA41/42 amplifiers operated as a bridge driver for a piezo transducer provides a low cost 660 volt total drive capability. The RN CN network serves to raise the apparent gain of A2 at high frequencies.