Texas Instruments INA317 is a low power, precision instrumentation amplifier with excellent accuracy. The universal three-op-amp design, compact size, and low power consumption make the device suitable for a wide range of portable applications.
A single external resistor sets the gain from 1 to 1000, as defined by the industry standard gain equation: G = 1 + (100kOhm / RG).
The instrumentation amplifier provides low offset voltage (75µV, G≥100), excellent offset voltage drift (0.3µV / C, G≥100), and high common-mode rejection (100dB for G≥10). The amplifier operates from a supply voltage as low as 1.8V (± 0.9V) and a quiescent current of 50µA, making the device suitable for battery-powered systems. The device uses auto-calibration technology to ensure accuracy over an extended industrial temperature range, which provides low noise density (50nV / √Hz) and can be extended to DC.
The amplifier is available in an eight-pin VSSOP surface-mount package and is specified over the TA = –40C to + 125C.
