Overview

Description

The EL8170 and EL8173 are micropower instrumentation amplifiers optimized for single supply operation over the +2. 4V to +5. 5V range. Inputs and outputs can operate rail-to-rail. As with all instrumentation amplifiers, a pair of inputs provide very high common-mode rejection and are completely independent from a pair of feedback terminals. The feedback terminals allow zero input to be translated to any output offset, including ground. A feedback divider controls the overall gain of the amplifier. The EL8170 is compensated for a gain of 100 or more, and the EL8173 is compensated for a gain of 10 or more. The EL8170 and EL8173 have bipolar input devices for best offset and 1/f noise performance. The amplifiers can be operated from one lithium cell or two Ni-Cd batteries. The EL8170 and EL8173 input range includes ground to slightly above positive rail. The output stage swings to ground and positive supply (no pull-up or pull-down resistors are needed).

Features

  • 95µA maximum supply current
  • Maximum offset voltage
  • 200µV (EL8170)
  • 1000µV (EL8173)
  • Maximum 3nA input bias current
  • 396kHz -3dB bandwidth (G = 10)
  • 192kHz -3dB bandwidth (G = 100)
  • Single supply operation
  • Input voltage range is rail-to-rail
  • Output swings rail-to-rail
  • Pb-Free (RoHS Compliant)

Comparison

Applications

Applications

  • Battery- or Solar-Powered Systems
  • Strain Gauges
  • Current Monitors
  • Thermocouple Amplifiers

Documentation

Design & Development

Models