INA155U/2K5G4

Overview

The INA155U/2K5G4 is a single-channel instrumentation amplifier from Texas Instruments, designed for single-supply operation with rail-to-rail output capabilities. It utilizes CMOS technology to achieve low power consumption and high performance in compact packages. Key electrical specifications include a slew rate of 6.5 V/us, a common-mode rejection ratio (CMRR) of 78 dB, an input bias current of 50 pA, and an input offset voltage of 1 mV. The device operates within a supply voltage range of 2.7 V to 5.5 V, drawing a typical operating supply current of 1.7 mA. It supports an operating temperature range from -40°C to +85°C and is available in an SOIC-8 surface-mount package.

Feature Summary

• Single-supply operation with rail-to-rail output capability
• CMOS architecture for low power consumption
• Low input bias current for high impedance applications

Applications

• Battery-powered sensor interfaces
• Portable medical instrumentation
• Industrial process control systems

Procurement Notes

Verify the specific suffix G4 indicates RoHS compliance when ordering. Confirm the /2K5 designation corresponds to the tape and reel packaging format required for automated assembly processes. Ensure the SOIC-8 package dimensions match the target PCB footprint design constraints before finalizing procurement plans.

Selection Notes

Select this component when single-supply operation and rail-to-rail output swing are critical requirements. The CMOS technology offers a balance between low power consumption and adequate bandwidth for general-purpose instrumentation tasks. Consider the 78 dB CMRR specification against system noise requirements to ensure signal integrity is maintained in noisy environments.

Part Context

This part belongs to the INA155 series of instrumentation amplifiers manufactured by Texas Instruments. The series focuses on providing cost-effective solutions for applications requiring precision amplification without the need for dual supplies. The U/2K5G4 variant specifically denotes the surface-mount package and reel quantity configuration.

Replacement Considerations

INA155U/2K5 is listed as an alternate packaging option for the same functional device.