Product Summary

The 2B31J is a high performance, low cost, compact signal conditioning module. It is designed specifically for high accuracy interface to strain gage-type transducers and RTD. The 2B31J consists of three basic sections: a high quality instrumention amplifier; a three-pole low pass filter, and an adjustable transducer excitation. It features guaranteed low noise performance 1μVp-p max, and outstanding 140dB common mode rejection (60Hz, CMV=±10V, G=1000V/V) enabling the device to maintaion total amplifier errors below 0.1% over a 20℃ temperature range. The 2B31J is easily and directly interfaced to a wide variety of transducers for precise measurement and control of pressure, temperature, stress, force and torque. It is ideally suited for use in indicators, recoders and controllers.

Parametrics

2B31J absolute maximum ratings: (1)regulator input voltage range: +9.5V to +2.8V; (2)output voltage range: +4V to +15V; (3)regulator input/output voltage, differential: 3V to 24V; (4)output current: 0 to 100mA max; (5)regulation, output voltage, vs, supply: 0.05%/V; (6)load regulation, II=1mA to IL=50mA: 0.1%; (7)output voltage, vs, temperature (0 to 70℃): 0.015%/℃ max, 0.003%/℃ typ; (8)output noise: 1mV rms; (9)reference voltage (internal): 7.15V±3%; (10)regulator input voltage range: +9.5 to +28V; (11)output current range: 100μA to 10mA; (12)compliance volate: 0 to 10V; (13)load regulation: 0.1%; (14)temperature coefficient (0 to +70℃): 0.003%/℃; (15)output noise: 1μA rms.

Features

2B31J features: (1)low cost; (2)complete signal conditioning function; (3)low drift: 0.5μV/℃ max; low noise: 1μVp-p max; (4)wide gain range: 1 to 2000V/V; (5)low nonlinearity: 0.0025% max; (6)high CMR: 140dB min (60Hz, G=1000V/V); (7)input protected to 130Vrms; (8)adjustable low pass filter: 60dB/Decade roll-off (from 2Hz); (9)programmable transducer excitation: voltage (4V to 15V@100mA) or current (100μA).

Diagrams