精密，双通道仪表放大器 Precision, Dual-Channel Instrumentation Amplifier
GENERAL DESCRIPTION
The 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.
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
APPLICATIONS
Medical instrumentation
Precision data acquisition
Transducer interface
