STMicroelectronics’ high-accuracy TSZ151 operational amplifiers have very low offset voltage with minimal temperature drift, bringing enhanced accuracy and stability to circuits for sensor interfacing, signal conditioning, and current measurement.
An extremely low input offset voltage (Vio) is the defining parameter of a high-accuracy operational amplifier (op amp). The TSZ151 has Vio less than 7 µV at 25°C. Moreover, the value remains stable, below 10 µV, over the full specified temperature range, from -40°C to 125°C. Its high stability minimizes reliance on periodic recalibration, enhancing the availability of the end product throughout its lifetime.
With gain bandwidth of 1.6 MHz and drawing just 210 μA at 5V, the TSZ151 sits between ST’s 400 kHz TSZ121 and 3 MHz TSZ181, giving designers more choice and flexibility to optimize speed and power consumption. The TSZ151 combines its excellent speed-to-power ratio with an ultra-low maximum input bias current of 300 pA.
Having a minimum operating voltage of 1.8 V, the TSZ151 can be powered from the same rail as other ICs in the system, such as a low-voltage microcontroller. The rail-to-rail input and output help maximize dynamic range. The op-amp also has very low power consumption, drawing just 210 μA at 5 V, while the low supply-voltage capability permits extended runtime with a discharged battery.
Leveraging its wide operating temperature range, from -40°C to +125°C, designers can use the TSZ151 in equipment to be deployed in harsh environments and applications with long mission profiles. Typical uses include feedback circuitry in power supplies for industrial, server, and telecom infrastructure applications, and automotive high-accuracy signal conditioning and power conversion. The TSZ151 is AEC-Q100 qualified and is covered by ST’s rolling 10-year longevity plan that guarantees long-term product support.
The TSZ151 is in mass production now and available in a choice of tiny SC70-5 and SOT23-5 packages. Free samples are available at ST’s eStore and pricing starts at $0.58 for 1000 units.
Click here to learn more about TSZ151ICT
