apex microtechnology corporation ? telephone (520) 690-8600 ? fax (520) 888-3329 ? orders (520) 690-8601 ? email prodlit@apexmicrotech.com 24-pin psop package style df equivalent schematic (one of two channels) external connections for c c values, see graph on page 3. note: c c must be rated for full supply voltage. * supply bypassing required. see general operating con - siderations. features ? rohs compliant ? surface mount package ? monolithic mos technology ? low cost ? high voltage operation350v ? low quiescent current typ.2.2ma ? no second breakdown ? high output current20 ma peak applications ? telephone ring generator ? piezo electric positioning ? electrostatic transducer & deflection ? deformable mirror focusing description the PA243 is a dual high voltage monolithic mosfet op - erational amplifer achieving performance features previously found only in hybrid designs while increasing reliability. this approach provides a cost-effective solution to applications where multiple amplifers are required. inputs are protected from excessive common mode and differential mode volt - ages. the safe operating area (soa) has no secondary breakdown limitations and can be observed with all type loads by choosing an appropriate current limiting resistor. external compensation provides the user fexibility in choosing optimum gain and bandwidth for the application. the PA243df is packaged in a 24 pin psop (jedec mo-166) package. the heatslug of the PA243df package is isolated in excess of full supply voltage. typical application low cost 660v p-p piezo drive a single PA243 amplifer operates as a bridge driver for a piezo transducer providing a low cost 660 volt total drive capability. the r n c n network serves to raise the apparent gain of a2 at high frequencies. if r n is set equal to r the amplifers can be compensated identically and will have matching bandwidths. see application note 20 for more details. 8 8 8 " 1 & 9 . * $ 3 0 5 & $ ) $ 0 . " 1 & 9 . * $ 3 0 5 & $ ) / 0 - 0 ( : ) * ( ) 7 0 - 5 " ( & |