STMicroelectronics recently launched a unity-gain stable amplifier-TSV7722, which can drive a capacitive load of up to 47pF and is used as an input buffer in an analog-to-digital converter (ADC). This precision high-bandwidth operational amplifier has a gain bandwidth of 22MGz and a conversion rate of 11V/μs, which is ideal for high-speed signal conditioning and accurate current measurement in power conversion circuits and optical sensors. Its operating voltage range is 1.8V-5.5V, and it can be powered by the same power supply as low-voltage CMOS components (such as microcontrollers) or a deeply discharged battery. The maximum input offset voltage is 200µV (typical value is 50µV at 25°C) and the extremely low input voltage noise density of 7nV/√Hz enables accurate low-side current measurement.
Based on the features of providing accurate and responsive current test results for power conversion systems, TSV7722 can improve energy efficiency in applications such as automotive smart mobility, solar panels, telecommunications infrastructure, and computer servers.
TSV7722 has been mass-produced now in MiniSO8 and DFN8 packages. It is included in STMicroelectronics' 10-year life plan to ensure long-term supply.
