Texas Instruments

INA128U

INA128U Description

The INA128U from Texas Instruments is a high-precision instrumentation amplifier designed for applications requiring accurate signal amplification with minimal noise and drift. Packaged in an 8-SOIC surface-mount form factor, this single-channel IC operates over a wide supply voltage range of 4.5V to 36V, making it versatile for industrial, medical, and test equipment applications. With an ultra-low input bias current of 2nA and a 10µV input offset voltage, the INA128U ensures high accuracy in low-level signal conditioning. Its 1.3MHz bandwidth and 4V/µs slew rate enable fast signal processing, while the 700µA supply current ensures energy efficiency.

INA128U Features

• Low Noise & High Precision: 10µV offset voltage and 2nA input bias current for precise signal amplification.
• Wide Supply Range: Operates from 4.5V to 36V, suitable for battery-powered and high-voltage systems.
• High CMRR: Excellent common-mode rejection minimizes interference in noisy environments.
• Low Power Consumption: Only 700µA supply current, ideal for portable and energy-sensitive designs.
• Robust Packaging: 8-SOIC tube packaging with MSL3 (168 hours) moisture sensitivity, ensuring reliability.
• RoHS3 & REACH Compliant: Meets environmental and regulatory standards for global use.

INA128U Applications

The INA128U excels in applications demanding high gain accuracy and low drift, including:

• Medical Instrumentation: ECG amplifiers, patient monitoring systems.
• Industrial Sensors: Strain gauge amplification, bridge sensor conditioning.
• Test & Measurement: Data acquisition systems, precision voltage amplification.
• Automotive Systems: Signal conditioning for pressure and temperature sensors.
• Portable Devices: Low-power sensor interfaces for IoT and wearable tech.

Conclusion of INA128U

The INA128U stands out as a high-performance instrumentation amplifier with low noise, wide voltage range, and precision signal conditioning. Its versatility in medical, industrial, and automotive applications, combined with low power consumption and robust packaging, makes it a preferred choice for engineers requiring reliable amplification in demanding environments. For designs needing high CMRR, low drift, and energy efficiency, the INA128U delivers unmatched performance.