ANALOG DEVICES LF398S8#TRPBF

LF398S8#TRPBF is a precision sample and hold amplifier which uses a combination of bipolar and junction FET transistors to provide precision, high speed, and long hold times. A typical offset voltage of 2mV and gain error of 0.004% low this sample and hold amplifier to be used in 12bit systems. Dynamic performance can be optimized by processor selection of the external hold capacitor. Acquisition times can be as low 4µs for small capacitors while hold step and droop errors can be held below 0.1mW and 30µV/sec respectively when using larger capacitors. The logic input is high impedance differential to allow easy interfacing to any logic family without ground loop problems. A separate offset adjust pin can be used zero the offset voltage in either the sampler hold mode. Application includes 12bit data acquisition systems, ramp generators, analogue switches, staircase generators, sample and difference circuit.