v1.0 1 AMP771 low offset rro operational amplifier april 2007 AMP771 low offset rro operational amplifier general description key specification the AMP771 is single low noise precision operationa l amplifiers intended for use in a wide range of appl ications. the AMP771 can operation in temperature range of ?4 0c to 125c with low input bias current. AMP771 is characterized to operate supply voltage range 2.7v to 5v with operat ing temperature range of ?40c to 85c. the AMP771is designed for precision, low noise, low voltage, and miniature systems. it provides rail-to-rail out put swing into heavy loads. the maximum input offset voltage for the AMP771 is tbd v at room temperature and the input common mode voltage range includes ground. voltage range v os(max) v cm(max) bandwidth temperature range features low voltage noise rail-to-rail output applications transducer amplifier instrumentation amplifier precision current sensing data acquisition systems active filters and buffers sample and hold portable/battery powered electronics 2.7v < v cc < 5.5v tbd v 0 to v cc ? 0.9v 3.5mhz ?40c to 85c schematic diagram instrumentation amplifier gnd vout vcc -in gnd +in 4 5 3 2 1 - + AMP771st23-5 + - + - + - v 1 kr 2 v out kr 2 v o2 r 2 r 1 r 1 /a r 1 r 2 v o1 v 2 v out = -k(2a+1)(v 1 -v 2 ) figure 1 AMP771 low offset rro operational amplifie r figure 2 application example circuit
v1.0 2 AMP771 pin assignment 1 4 5 3 2 AMP771st23-5 (top view) pin no. pin name type description 1 +in i positive differential input 2 gnd i ground 3 -in i negative differential input 4 v out o positive output 5 v cc i power supply operation conditions parameter symbol min typ max unit power supply voltage v cc 2.7 5.5 v operating temperature range t a -40 85 c ordering information part number package marking + AMP771st23-5 5-lead sot23-5 a771s xyz + xyz = assembly and date code
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