INA149AIDR

• Common-Mode Rejection Ratio of 90dB with a Maximum Input Offset Voltage of 350µV
• Handles Common-Mode Input Voltage Up to 300V
• Single-Supply Operation from 4V to 36V, or Dual Supplies of 2V to 18V per Rail
• Draws 810µA of Operating Supply Current and Delivers Up to 25mA of Output Current per Channel
• Slew Rate of 5V per Microsecond
• 8-Pin SOIC Package with Gold Contact plating, Supplied on Tape and reel, Lead Free and RoHS Compliant

The Texas Instruments INA149AIDR is a single-channel precision amplifier supplied in an 8-pin SOIC package. It offers a common-mode rejection ratio of 90dB and a maximum input offset voltage of 350µV, and it handles common-mode input voltages up to 300V. The INA149AIDR operates from a single supply of 4V to 36V or from dual supplies of 2V to 18V per rail, and draws 810µA of operating supply current. It is specified over the -40°C to 125°C temperature range.

High-common-mode amplifiers of this type are used to measure a small differential signal that sits on top of a large common-mode voltage, which is the situation in high-side current sensing and in voltage monitoring across a power rail. With a 300V common-mode input rating, the INA149AIDR suits battery-stack monitoring, motor-drive current measurement, and industrial process instrumentation. Its -40°C to 125°C rating covers factory-floor and under-hood ambient conditions. Typical buyers are designers of industrial control, test and measurement, and power-conversion equipment.