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DF08832A
PA241 M I C R O T E C H N O L O G Y FEATURES • RoHS COMPLIANT • MONOLITHIC MOS TECHNOLOGY • LOW COST • HIGH VOLTAGE OPERATION—350V • LOW QUIESCENT CURRENT TYP.—2.2mA • NO SECOND BREAKDOWN • HIGH OUTPUT CURRENT—120mA PEAK • AVAILABLE IN DIE FORM—CPA241 APPLICATIONS 8-pin TO-3 24-pin PSOP PACKAGE STYLE CE PACKAGE STYLE DF TYPICAL APPLICATION • PIEZO ELECTRIC POSITIONING • ELECTROSTATIC TRANSDUCER & DEFLECTION • DEFORMABLE MIRROR FOCUSING • BIOCHEMISTRY STIMULATORS • COMPUTER TO VACUUM TUBE INTERFACE 10-pin SIP PACKAGE STYLE DW Ref: APPLICATION NOTE 20: "Bridge Mode Operation of Power Amplifiers" DESCRIPTION The PA241 is a high voltage monolithic MOSFET operational amplifier which achieves performance features previously found only in hybrid designs while increasing reliability. Inputs are protected from excessive common mode and differential mode voltages. The safe operating area (SOA) has no second breakdown limitation and can be observed with all type loads by choosing an appropriate current limiting resistor. External compensation provides the user flexibility in choosing optimum gain and bandwidth for the application. The PA241CE is packaged in a hermetically sealed 8-pin TO-3 package. The metal case of the PA241CE is isolated in excess of full supply voltage. The PA241DF is packaged in a 24 pin PSOP (JEDEC MO166) package. The metal heat slug of the PA241DF is isolated in excess of full supply voltage. The PA241DW is packaged in Apex’s hermetic ceramic SIP package. The alumina ceramic isolates the die in excess of full supply voltage. EQUIVALENT SCHEMATIC +VS LOW COST 660V p-p PIEZO DRIVE Two PA241 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. If RN is set equal to R the amplifiers can be compensated identically and will have matching bandwidths. EXTERNAL CONNECTIONS PA241CE PA241DW RCL 1 CC C C1 3 OUT 4 5 –IN 2 C C2 1 ILIM 8 7 –VS 3 4 5 6 NC NC -VS +VS 7 8 9 10 ILIM CC2 CC1 OUT CC -IN +IN TOP VIEW 6 +IN 2 RCL For CC values, see graph on page 4. Note: CC must be rated for full supply voltage. +VS PA241DF CC1 NC NC C C2 NC NC OUT NC NC OUT -IN ILIM NC NC NC +IN NC + -IN 24 - +IN 1 COMP NC COMP NC NC -VS -VS ILIM NC RCL NC NC CC +VS NOTE: PA241CE Recommended mounting torque is 4-7 in•lbs (.45 -.79 N•m) CAUTION: The use of compressible, thermally conductive insulators may void warranty. APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
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