STMicroelectronics introduces automotive-grade micropower operational amplifier, which can withstand extreme temperatures
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Update time : 2023-03-16 12:01:03
According to media reports, STMicroelectronics has introduced the TSU111H chip, a 5V automotive-grade operational amplifier that not only has micropower current consumption and an operating temperature range of 150°C, but also offers comprehensive features not available in a single device.
The TSU111H meets AEC-Q100 Class 0 temperature requirements (-40°C to 150°C) and can withstand extreme high temperature environments such as braking systems, internal combustion engine exhaust systems, and fuel cell generators. This maximum operating temperature means that the TSU111H can be used in the sensor's internal sensor control unit (SCU) near the hottest areas for optimal measurement accuracy. In non-extreme environments, the TSU111H has an extended temperature range that allows a mission profile three times longer than the equivalent Class 1 device qualified at 125°C. As a Class 0 device, the new op amp can serve the entire vehicle life by operating continuously for more than 25 years at 65°C, while Class 1 devices are specified for only eight years trouble-free. the TSU111H is ideally suited for applications such as battery management systems (BMS) for hybrid and electric vehicles. With a typical supply current of 1.7µA, the TSU111H ensures minimal load is applied to the vehicle power supply. In addition, its output voltage is accurate to within 250µV at 25°C and 600µV over the entire temperature range, ensuring highly accurate signal conditioning in all applications and operating conditions. The typical use of this amplifier is for accurate measurements in vehicle on-board chargers (OBCs). The TSU111H is now in production in a SOT23-5L package with a starting price of $1.29 per thousand. The device is part of ST's 10-year lifetime program, which ensures long-term product availability for automotive and industrial projects.
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