INA118PB

Overview

The INA118PB is a precision, low-power instrumentation amplifier manufactured by Texas Instruments. It features a single channel with a gain of 80 dB and a common-mode rejection ratio (CMRR) of 107 dB. The input bias current is 5 nA, and the input offset voltage is 50 uV. Operating power consumption is 350 uA. The device supports a supply voltage range from 2.7 V to 36 V. It operates within a temperature range of -40°C to +85°C. The component is housed in an 8-PDIP package.

Feature Summary

• Precision instrumentation amplifier architecture designed for high accuracy signal conditioning
• Low power consumption suitable for battery-operated applications
• High common-mode rejection ratio for effective noise suppression
• Single-channel configuration with fixed internal gain

Applications

• Industrial process control systems
• Medical equipment signal processing
• Data acquisition systems
• Strain gauge and load cell interfaces

Procurement Notes

Verify the specific suffix 'PB' indicates the plastic DIP package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure the operating environment remains within the specified -40°C to +85°C range. Check for moisture sensitivity levels if storage conditions exceed recommended limits. Validate pinout compatibility with existing PCB layouts before integration.

Selection Notes

Select this component when a fixed-gain instrumentation amplifier is required without external resistor trimming. The low power profile makes it suitable for portable devices. Compare against other INA118 variants if surface-mount packaging is preferred over through-hole DIP. Consider the 107 dB CMRR for noisy industrial environments. Verify that the 5 nA input bias current meets the source impedance requirements of the application.

Part Context

The INA118 series belongs to Texas Instruments' family of precision instrumentation amplifiers. It is often used as a replacement for older Burr-Brown designs. The PB suffix specifically denotes the plastic dual in-line package. This part is distinct from operational amplifiers like the LM118 due to its integrated differential input structure and fixed gain capability.

Replacement Considerations

• INA118PBG4