INA118UB/2K5

Overview

The INA118UB/2K5 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 (CMRR) 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

• Provides high precision amplification with low power consumption suitable for battery-operated systems
• Delivers high common-mode rejection ratio for accurate signal conditioning in noisy environments
• Features low input bias current and offset voltage to minimize measurement errors

Applications

• Precision data acquisition systems
• Medical instrumentation
• Industrial process control
• Strain gauge and bridge sensor interfaces

Procurement Notes

Verify the specific suffix /2K5 indicates tape-and-reel packaging when ordering. Confirm RoHS compliance status through the manufacturer's latest documentation. Ensure the SOIC-8 package dimensions match your PCB footprint requirements. Check for any recent product change notices that may affect pinout or specifications.

Selection Notes

Select this component when high accuracy and low power are critical. The 800 kHz bandwidth supports moderate-speed applications. Consider the 107 dB CMRR for rejecting interference. Compare against other INA118 variants if different packaging or gain settings are required. Verify supply voltage compatibility with your system design.

Part Context

This part belongs to the INA118 series of instrumentation amplifiers from Texas Instruments. It is designed as a cost-effective solution for precision applications requiring low power consumption. The series is known for its ease of use with external gain setting resistors. It serves as a replacement for older Burr-Brown designs in modern electronics.

Replacement Considerations

INA118U/2K5G4 is a confirmed substitute part number within the same family.