P r o d u c t I n n o v a t i o n F r o m

PA91

PA91U

1

FEATURES

♦HIGHVOLTAGE—450V(±225V)

♦LOWQUIESCENTCURRENT—10mA

♦HIGHOUTPUTCURRENT—200mA

♦PROGRAMMABLECURRENTLIMIT

♦HIGHSLEWRATE—300V/µs

APPLICATIONS

♦PIEZOELECTRICPOSITIONING

♦HIGHVOLTAGEINSTRUMENTATION

♦ELECTROSTATICTRANSDUCERS

♦PROGRAMMABLEPOWERSUPPLIESUP

TO440V

High Voltage Power Operational Amplifiers

PA91

P r o d u c t I n n o v a t i o n F r o m

DESCRIPTION

ThePA91isahighvoltage,lowquiescentcurrentMOS-

FEToperationalamplifierdesignedasalowcostsolu-

tionfordrivingcontinuousoutputcurrentsupto200mA

andpulsecurrentsupto350mA.Thesafeoperating

area(SOA)hasnosecondbreakdownlimitationsand

canbeobservedforalltypeloadsbychoosinganap-

propriatecurrentlimitingresistor.TheMOSFEToutput

stageisbiasedABforlinearoperation.Externalcom-

pensation provides flexibility in choosing bandwidth

andslewratefortheapplication.APEX’sPowerSIP

packageusesaminimumofboardspaceallowingfor

highdensitycircuitboards.The12-pinPowerSIPpack-

ageiselectricallyisolated.

EQUIVALENTSCHEMATIC

Copyright © Cirrus Logic, Inc. 2008

(All Rights Reserved)

http://www.cirrus.com

AUG2008

APEX − PA91REVG