Low-noise opamp features extended voltage and temperature ranges

July 17, 2018 // By Christoph Hammerschmidt
The TSB712A precision operational amplifier from STMicroelectronics features stable parameters over a wide voltage and temperature range and delivers cost-effective high-end performance for a wide range of applications such as industrial and automotive systems.

The TSB712A is fully specified over a wide voltage range from 2.7 V to 36 V or ±1.35 V to ±18 V. It is recommended for a wide variety of designs as a flexible module that not only simplifies technical decisions, but also purchasing and warehousing. It is specified for an extended temperature range of -40 °C to +125 °C and has a maximum offset drift of 2.8 µV/°C.

With its low input voltage noise of 12 nV/√Hz, the TSB712A can process low signal amplitudes and ensure high resolution. The input offset voltage of only 300 µV also simplifies circuit design in high-precision measurement and monitoring applications. With its gain bandwidth product of 6 MHz and its slew rate of 3 V/µs, the device guarantees accurate signal processing at low to medium frequencies. To increase the bandwidth in circuits requiring higher gain, the decompensated TSB7192A offers a gain-bandwidth product of 22 MHz at comparable current consumption and low noise.

The TSB712A's built-in input filter ensures high EMI rejection ratio (EMIRR) over a wide frequency range, effectively reducing noise sensitivity in industrial or automotive environments with high EMI or near RF equipment.

With its rail-to-rail inputs and outputs, the TSB712A is suitable for tasks such as high or low-side current measurement, data acquisition, Hall sensor interfaces, actuator control and motor control. It is suitable for a wide variety of industrial control and monitoring applications, instruments, test and measurement equipment and more. The automotive-compatible version of the module, which will be available from September 2018, is suitable not only for driver assistance systems but also for the entire body electronics, infotainment systems and the powertrain.

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