AD8220

Data Sheet JFET Input Instrumentation Amplifier with Rail-to-Rail Output in MSOP Package AD8220 FEATURES Low input currents 10 pA maximum input bias current (B grade) 0.6 pA maximum input offset current (B grade) High CMRR 100 dB CMRR (minimum), G = 10 (B grade) 80 dB CMRR (minimum) to 5 kHz, G = 1 (B grade) Excellent ac specifications and low power 1.5 MHz bandwidth (G = 1) 14 nV/√Hz input noise (1 kHz) Slew rate: 2 V/μs 750 μA quiescent supply current (maximum) Versatile MSOP package Rail-to-rail output Input voltage range to below negative supply rail 4 kV ESD protection 4.5 V to 36 V single supply ±2.25 V to ±18 V dual supply Gain set with single resistor (G = 1 to 1000) Qualified for automotive applications APPLICATIONS Medical instrumentation Precision data acquisition Transducer interfaces GENERAL DESCRIPTION The AD8220 is the first single-supply, JFET input instrumentation amplifier available in an MSOP package. Designed to meet the needs of high performance, portable instrumentation, the AD8220 has a minimum common-mode rejection ratio (CMRR) of 86 dB at dc and a minimum CMRR of 80 dB at 5 kHz for G = 1. Maximum input bias current is 10 pA and typically remains below 300 pA over the entire industrial temperature range. Despite the JFET inputs, the AD8220 typically has a noise corner of only 10 Hz. With the proliferation of mixed-signal processing, the number of power supplies required in each system has grown. The AD8220 is designed to alleviate this problem. The A...