Part Number	LF398A Datasheet
Manufacturer	National Semiconductor
Overview	The LF198/LF298/LF398 are monolithic sample-and-hold circuits which utilize BI-FET technology to obtain ultra-high dc accuracy with fast acquisition of signal and low droop rate. Operating as a unity . n Operates from ±5V to ±18V supplies n Less than 10 µs acquisition time n TTL, PMOS, CMOS compatible logic input n 0.5 mV typical hold step at Ch = 0.01 µF n Low input offset n 0.002% gain accuracy n Low output noise in hold mode n Input characteristics do not change during hold mode n High supply r.