The TSV7722 dual op amp from STMicroelectronics provides a gain bandwidth of 22 MHz and is unity-gain stable. With a maximum input-offset voltage of 200 μV (50 μV typical) and low input-voltage noise density of 7 nV/√Hz, the TSV7722 permits accurate low-side current measurements. In addition, the op amp’s typical input bias current of 2 pA enables accurate photodiode-current measurement in optical-sensing applications, such as smoke detectors.
The TSV7722 operates from a single 1.8 to 5.5V supply and is fully specified on a load of 47 pF. It can be powered from the same supply as low-voltage CMOS components, like microcontrollers, or from a deeply discharged battery. The op amp has a slew rate of 11 V/μs and consumes just 1.7 mA at 5V.
The part’s precision parameters and stability over temperature simplify circuit design by ensuring accuracy without precision resistors or trimming after assembly. By performing accurate and responsive current measurements for power-conversion systems, the TSV7722 dual op amp enhances energy efficiency in automotive smart mobility, solar panels, telecom infrastructure, and computer servers.
Available now in MiniSO8 and DFN8 packages, the TSV7722 is priced from $0.39 each in lots of 1000 units. Automotive qualified devices will be available in the second half of 2021.
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