SHA1144

ANALOG DEVICES FEATURES t10V min lnput/Output Range 50ns Aperture Delay 0.5nsApertureJitter 6ps SettlingTime t0.001% Max Gain LinearityError with Input Buffer Complete APPLICATIONS Trackand Hold PeakMeasurement Systems Data Acquisition Systems Simultaneous Sample-and-Hold High Resolution l+Bit and Sample Hold Amplifier GENERAL DESCRIPTION The SHA1144 is a fast sample-holdamplifier module with ac curacy and dynamic performance appropriatefor applications "sample" with fast 14-bit A/D converters.In the mode, it acrs as a fast amplifier, tracking the input signal. When switched to "hold" mode, the output is held at a level corresponding the to the input signal voltage at t}le instant of switching. The "hold" droop rate in is appropriate to allow accurate conversion by 14-bit A/D converters having conversion times of up to 150trrs. DYNAMIC PERFORMANCE to be compatible The SHA1144wasdesigned with fast 14-bit A/D converters suchasthe AnalogDevices'ADC1130 and which convert14 bits in 25gsand 129s,reADC1131series, Maximum acquisitiontime of 8trrs for the SHA1144 spectively. permits high samplingrates for 14-bit conversions. The SHA1144is guaranteed to havea maximumgainnonlinearity of 10.0017o of full scale to insure1/2LSBaccuracy in 14-bit systems. Whenin the "hold" mode,the droop rate is LpVltrrs, so the SHA1144will hold an input signal to 10.003%of full (20V p-p) for over60oprs. scale PRINCIPLE OF OPERATION basically of two high speed operational The SHA1144consists amplifiers,a...