STMicroelectronics TSV7722 operational amplifier

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The STMicroelectronics TSV7722 precision high-bandwidth operational amplifier, with gain-bandwidth of 22 MHz and slew rate of 11 V/μs, is suitable for high-speed signal conditioning and current measurement in power-conversion circuits and optical sensors.

The maximum input-offset voltage of 200 µV (typical 50 µV at 25°C) and low input-voltage noise density of 7 nV/√Hz permit precise low-side current measurements. In addition, the typical input bias current of 2 pA enables photodiode-current measurement in optical-sensing applications such as smoke detectors. Unity-gain stable, and fully specified on a load of 47 pF, the device can be used as an input buffer for analog-to-digital converters (ADCs).

With an operating-voltage range of 1.8–5.5 V, the product can be powered from the same supply as low-voltage CMOS components, such as a microcontroller, or from a deeply discharged battery. Moreover, its precision parameters and stability over temperature are said to simplify circuit design as there is no need for precision resistors or trimming after assembly.

By providing responsive current measurements for power-conversion systems, the product can enhance energy efficiency in applications such as automotive smart mobility, solar panels, telecom infrastructure and computer servers.

For more information: www.st.com/opamps.