INA114APG4

Overview

The INA114APG4 is a precision instrumentation amplifier manufactured by Texas Instruments, housed in an 8-pin PDIP package. It operates on dual power supplies ranging from ±2.25 V to ±18 V (total 4.5 V to 36 V). Key electrical specifications include a maximum input offset voltage of 125 µV, a minimum common-mode rejection ratio (CMRR) of 110 dB, and a gain-bandwidth product of 1 MHz. The device draws a typical supply current of 2.2 mA and features a slew rate of 60 mV/µs. It supports a wide operating temperature range from -40°C to +85°C.

Feature Summary

• Provides high-precision signal amplification with low input offset voltage for accurate measurement applications.
• Delivers high common-mode rejection capability to effectively suppress noise in differential signals.
• Features low power consumption suitable for battery-operated or energy-efficient systems.

Applications

• Precision data acquisition systems
• Strain gauge and load cell interfaces
• Medical instrumentation front-ends

Procurement Notes

Verify the component authenticity by checking the manufacturer's marking and date code against official TI documentation. Ensure the ordering suffix 'G4' corresponds to the specific lead-free and RoHS-compliant variant required for your design. Confirm that the PDIP-8 package dimensions match your PCB footprint constraints before finalizing procurement.

Selection Notes

Select this component when high CMRR and low offset voltage are critical for maintaining signal integrity in low-level sensor applications. Consider the 1 MHz bandwidth and 60 mV/µs slew rate to ensure adequate performance for the target signal frequency. Verify that the single-channel configuration fits within the system's channel count requirements and that the through-hole package is compatible with the assembly process.

Part Context

The INA114 series belongs to Texas Instruments' family of precision instrumentation amplifiers, designed for high-accuracy analog signal conditioning. The 'G4' suffix indicates a lead-free, RoHS-compliant version of the standard INA114AP, adhering to environmental standards while maintaining identical electrical performance characteristics as the original non-G4 part.

Replacement Considerations

Direct pin-compatible replacements may include the INA114AP without the G4 suffix, noting only packaging material differences. Other precision instrumentation amplifiers with similar CMRR and bandwidth, such as the AD624, require circuit redesign due to different gain-setting architectures and pinouts.