STMicroelectronics (ST), a global semiconductor company supporting a wide range of electronic applications and customers, is enhancing measurement accuracy in high-temperature vehicle interiors by launching a micro power operational amplifier that operates stably even under extreme temperature conditions.

ST announced on the 21st that it has launched the TSU111H, a 5V automotive operational amplifier featuring micro-power consumption and a 150°C operating temperature, providing a combination of characteristics that are difficult to implement in a single device.

The TSU111H has obtained AEC-Q100 temperature class-0 (-40°C to 150°C) certification and is designed to be suitable for environments where extreme heat is generated, such as braking systems, combustion engine exhaust systems, and fuel cell generators.

Its high maximum operating temperature allows it to be used inside the Sensor Control Unit (SCU) located near the sensor in the hottest region, thereby optimizing measurement accuracy.

In environments with extreme heat generation, the TSU111H extends the temperature range to perform mission profiles up to three times longer than other devices in its class that have obtained Class-1 certification at 125°C.

While Class-1 devices guarantee 8 years of failure-free operation, this new operational amplifier from ST operates as a Class-0 device and runs continuously for over 25 years at 65°C.It can be operated and used for the entire lifespan of the vehicle.

Therefore, it is highly suitable for applications such as battery management systems (BMS) in hybrid and electric vehicles that must not be turned off and must consume only minimum power.

The TSU111H occupies only the minimum load in the vehicle's electrical supply with an average supply current of 1.7μA. The output voltage is also accurately maintained within 250μV at 25°C and within 600μV over the entire temperature range, ensuring high-precision signal conditioning in all applications and operating conditions. Generally, it can be used for precision measurements of vehicle onboard chargers (OBCs).

The TSU111H is currently in production in SOT23-5L packages at a price of $1.29 for purchases of 1,000 units. This device is supported by ST's 10-year supply guarantee program, which ensures long-term product availability for automotive and industrial projects. Free samples are currently available for request on the ST eStore.

Further information can be found at http://www.st.com/TSU11.