STMicroelectronics TSV792 operational amplifier

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STMicroelectronics’ TSV792 dual 5V operational amplifier (op amp) combines 50 MHz gain-bandwidth with precision attributes including low input offset voltage and low input voltage noise of 6.5 nV/√Hz.

The typical 50 MHz gain-bandwidth product is said to enable accurate amplification of high-frequency signals. With a fast slew rate of 30 V/µs, the device is suitable for photodiode-signal conditioning in battery-powered smoke detectors. By efficiently processing the photodetector output signal, the unit saves energy for extra features such as wireless networking that add value to smart-home products.

With typical input offset voltage of 50 µV (at 25°C), the product performs low-side current sensing in motor-control applications and power systems such as industrial power supplies, telecom and network infrastructure supplies, and renewable-energy conversion. Moreover, its ability to handle an output capacitance up to 1 nF and full specification on a load of 22 pF makes it a high-speed, high-precision solution for filter applications and input buffering of analog-to-digital converters (ADCs).

The precision qualities of the op amp, with maximum input offset voltage specified over the extended temperature range from -40 to 125°C, are said to allow high measurement accuracy without special external components such as precision resistors that add to BOM cost. Trimming or calibrating circuits during production can also be avoided.

With a wide supply-voltage range from 2.2 to 5.5 V, the product can be powered from the same supply as other low-voltage digital ICs such as the system host microcontroller, and can run from a deeply discharged battery to extend equipment runtime. The op amp is unity-gain stable and benefits from rail-to-rail input and output, permitting a variety of design topologies and simplified circuit designs.

For more information: www.st.com/tsv792-pr.