STMicroelectronics (ST) has introduced two 36V operational amplifiers for automotive and industrial applications with improved performance and robustness. These operational amplifiers feature a wide supply voltage range, stability in harsh operating environments, and an Electrostatic Discharge (ESD) tolerance of up to 4kV.

The newly released single-OP amps TSB572 and TSB611 are the first devices to utilize ST's new 40V-based BiCMOS semiconductor process. This technology provides excellent GBW/Icc efficiency by reducing the supply current to approximately one-fifth compared to the performance of general-purpose OP amps.



In addition, it enables low input-offset voltage with a temperature drift of less than 6µV/°C, simplifying system design and eliminating the need for trimming or calibration, while maintaining constant performance over a specified temperature range of -40°C to 125°C.

The TSB572, which provides rail-to-rail input and output, is a product that implements a gain-bandwidth (GBW) of 2.5 MHz and an input-offset voltage of up to 1.5 mV, and is equipped with capacitive load and phase inversion immunity. In addition, the supply voltage range is wide from 4.0V to 36V, so it can be used according to the parameters specified by the power supply.

The TSB611 has a GBW of 560 kHz and can be driven with low supply voltages as low as 2.7 V. It is a unity-gain stable device with a low input-offset voltage of 1 mV and a low operating current of 125 µA at 36 V.

This new OP amp product offers a small package option, making it suitable for space-constrained applications such as car audio systems or ECUs (Electronic Control Units).