INA118UB

Overview

The INA118UB is a precision low-power instrumentation amplifier manufactured by Texas Instruments. It features a single channel with an 800 kHz bandwidth and a slew rate of 900 mV/us. Key electrical parameters include a common-mode rejection ratio of 107 dB, input bias current of 5 nA, and input offset voltage of 50 uV. The device operates on supply voltages ranging from 2.7 V to 36 V with a typical operating current of 350 uA. It offers a gain error of 0.002% and maximum input resistance of 10 GOhms. The component is housed in an SOIC-8 package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Precision low-power instrumentation amplifier design
• High common-mode rejection capability
• Low input bias current for minimal signal loading
• Wide single-supply or dual-supply operation range

Applications

• Battery-powered measurement systems
• Medical equipment signal conditioning
• Industrial process control sensors
• Strain gauge and thermocouple amplification

Procurement Notes

Verify the specific suffix 'UB' against the manufacturer's official datasheet to confirm pinout compatibility and packaging details. Ensure the ordering part number matches the required tape-and-reel quantity specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement to avoid handling issues during assembly.

Selection Notes

Select this component when high accuracy and low power consumption are critical. The wide supply voltage range supports both battery and industrial applications. Verify that the 800 kHz bandwidth meets the signal frequency requirements. Consider the SOIC-8 package size for PCB layout constraints compared to other available packages in the INA118 family.

Part Context

The INA118UB belongs to the INA118 series of instrumentation amplifiers from Texas Instruments. This series is designed for applications requiring high precision and low power dissipation. The UB suffix typically denotes a specific packaging variant within the standard product line, maintaining the core electrical characteristics of the base INA118 model while adapting to surface-mount manufacturing processes.

Replacement Considerations

INA118U/2K5G4 is a documented alternate version within the same family.