Overview
Description
Support is limited to customers who have already adopted these products.
The ISL28270 and ISL28273 are dual channel micropower instrumentation amplifiers (in-amps) and the ISL28470 is a quad channel in-amp optimized for single supply operation over the +2. 4V to +5. 5V range. All three devices feature an Input Range Enhancement Circuit (IREC) which maintains CMRR performance for input voltages equal to the positive supply and down to 50mV above the negative supply rail. The input signal is capable of swinging above the positive supply rail and to 10mV above the negative supply with only a slight degradation of the CMRR performance. The output operation is rail-to-rail. The ISL28273 is compensated for a minimum gain of 10 or more. For higher gain applications, the ISL28270 and ISL28470 are compensated for a minimum gain of 100. The in-amps have bipolar input devices for best offset and excellent 1/f noise performance. The amplifiers can be operated from one lithium cell or two Ni-Cd batteries.
Features
- 150µV Max Offset Voltage (ISL28270, ISL28470)
- 600µV Max Offset Voltage (ISL28273)
- 2.5nA Max Input Bias Current (ISL28270, ISL28470)
- 110dB CMRR
- 0.7µV/°C Offset Voltage Temperature Co-efficient
- 240kHz -3dB Bandwidth (G = 100) ISL28270, ISL28470
- 230kHz -3dB Bandwidth (G = 10) ISL28273
- Single Supply Operation
- Rail-to-Rail Input and Output (RRIO)
- Pb-Free (RoHS Compliant)
Comparison
Applications
Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

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