Low drift op amps operate to 175 degrees C for longevity in automotive designs
The TSZ181H1 and dual TSZ182H1 are automotive-qualified op amps, claimed to deliver high accuracy and stability over a wide temperature range of -40 to +175 degrees C. The high maximum operating temperature encourages use in harsh environments and in applications with long mission profiles.
The op amps have very low input offset voltage, typical 3.5 microV at 25 degrees Cm and input bias current, typical 30pA at 25 degrees C. The parameters display minimal drift over temperature, with maximum input offset voltage specified as 70 microV at 25 degrees C and 100 microV over the full temperature range. The maximum specified input bias current is 200pA at 25 degrees C and 225pA over the full range.
The wide operating-temperature range also allows the op amps to withstand harsh environments in industrial as well as automotive applications. At lower die temperature, they can operate for an extended lifetime in applications that require a long mission-profile ICs, said ST. The devices are AEC-Q100 qualified and have 4kV HBM ESD tolerance.
The TSZ181H1 and TSZ182H1 can be used for accuracy in high bandwidth sensor interfaces. They can also be used for precision signal conditioning without calibration, which simplifies end product manufacturing, said the company. The gain-bandwidth of 3MHz and operating current of just 1mA at 5V provide a superior speed-to-power ratio. Designed for a wide power supply voltage range, from 2.2V to 5.5V, both devices have rail-to-rail input and output to maximise usable dynamic range.
Both op amps are in production now and available in a choice of SOT23-5 or SO8 packages.
