TSZ181H

The TSZ181H is a high-performance, low-power operational amplifier manufactured by STMicroelectronics, designed for precision analog signal conditioning in demanding applications. It features a wide supply voltage range of 2.7 V to 5.5 V, enabling versatile operation across various power domains, including battery-powered and industrial systems. The device offers a high gain-bandwidth product of 3 MHz, ensuring excellent frequency response and stability in both single-supply and split-supply configurations. This op-amp provides a low offset voltage of typically 1.5 mV, which enhances accuracy in measurement and sensor interface circuits. Its low quiescent current—only 180 µA per channel—makes it ideal for energy-sensitive applications such as portable medical devices, wearable electronics, and remote sensing nodes. Additionally, the TSZ181H boasts a high open-loop gain of 100 dB, contributing to precise amplification with minimal distortion. The package is available in a compact SOT23-5 form factor, facilitating easy integration into space-constrained designs. It includes internal ESD protection and thermal shutdown features, improving reliability under adverse conditions. The device operates reliably over an extended temperature range from -40°C to +125°C, making it suitable for harsh environments like automotive and industrial automation systems. In terms of functionality, the TSZ181H supports a variety of circuit topologies, including non-inverting, inverting, differential, and instrumentation amplifier configurations. It is commonly used in sensor signal conditioning—for example, converting outputs from strain gauges, thermocouples, or pressure sensors into usable voltage levels. It also serves well in active filter designs, level shifting, and buffer applications due to its rail-to-rail input and output capabilities. Its robust performance, combined with low power consumption and small footprint, makes the TSZ181H a preferred choice for designers seeking reliable analog solutions in modern electronic systems.