IB31 internal functional block diagram and pin function diagram

1831 is a strain gauge signal conditioning integrated circuit produced by Analog Devices. It contains low drift input
±0. 25V, V/qC (RTI, G=1000), excellent linearity (maximum ±0.005%), and low noise (0.3pVp. p, o.1.
10Hz), high CMRR (140dB, C=1000, 60Hz) instrument amplifier, which can drive bridge excitation circuits (output +4 to +15V), reference voltage sources and other circuits with resistive loads greater than 120fl
. The output drift is only ±0.o04% gate C, and
the offset of the output voltage can be adjusted within a range of ±10V through an external resistor . The working power supply voltage range is
±(12-18)V. The internal functional block diagram and pin function diagram of 1831 are as shown in the figure