INA180

The INA180 is a precision, low-cost, single-supply instrumentation amplifier manufactured by Texas Instruments. It operates from a single supply voltage ranging from 2.7 V to 5.5 V, making it ideal for battery-powered and portable applications. The device features a high common-mode rejection ratio (CMRR) of up to 100 dB at 60 Hz, ensuring accurate signal amplification even in the presence of strong common-mode noise. Its input offset voltage is typically 10 µV, and it offers a very low drift of only 0.05 µV/°C, which enhances long-term stability and accuracy. The INA180 includes an integrated gain-setting resistor network that allows users to configure gains from 1 to 1000 using a single external resistor, simplifying design and reducing component count. This feature makes it highly versatile for various signal conditioning tasks without requiring complex external circuitry. The amplifier also boasts a wide bandwidth of 130 kHz at a gain of 100, enabling it to handle fast-changing signals effectively while maintaining low noise performance—typically 1.1 µV RMS over the 0.1 Hz to 10 Hz band. Designed for robust operation, the INA180 has a guaranteed operating temperature range from –40°C to +125°C, making it suitable for industrial, automotive, and medical environments where reliability under harsh conditions is critical. It supports rail-to-rail output swing, allowing full utilization of the supply voltage range for maximum dynamic headroom. Additionally, the device features a shutdown mode that reduces quiescent current to less than 1 µA, significantly improving power efficiency in low-power applications. Common applications include sensor signal conditioning for thermocouples, strain gauges, pressure sensors, and other low-level differential signals in data acquisition systems. Its ability to amplify small differential voltages while rejecting large common-mode signals makes it particularly valuable in measurement systems where accuracy and noise immunity are paramount. The INA180 is available in compact SOIC and TSSOP packages, facilitating integration into space-constrained designs. Texas Instruments ensures high quality and consistency through rigorous testing and process control, making the INA180 a reliable choice for engineers seeking a cost-effective, high-performance solution for precision analog signal processing.