New Precision High-Bandwidth Op-Amp

The STMicroelectronics TSV7722 is well-suited for high-speed signal conditioning and accurate current measurement in power-conversion circuits

STMicroelectronics have released the new TSV7722 precision high-bandwidth operational amplifier, with gain-bandwidth of 22MHz and slew rate of 11V/µs. This operational amplifier is well-suited for high-speed signal conditioning and accurate current measurement in power-conversion circuits and optical sensors.

ST Releases New Precision High-Bandwidth Op Amp

The maximum input-offset voltage of 200µV (typical 50µV at 25°C) and extremely low input-voltage noise density of 7nV/√Hz permit accurate low-side current measurements. In addition, the typical input bias current of 2pA enables accurate photodiode-current measurement in optical-sensing applications such as smoke detectors. Unity-gain stable, and fully specified on a load of 47pF, the TSV7722 can be used as an input buffer for analog-to-digital converters (ADCs).

With an operating-voltage range of 1.8V-5.5V, the TSV7722 can be powered from the same supply as low-voltage CMOS components, such as a microcontroller, or from a deeply discharged battery. Moreover, the TSV7722’s precision parameters and stability over temperature further simplify circuit design by ensuring outstanding accuracy without precision resistors or trimming after assembly.

By providing accurate and responsive current measurements for power-conversion systems, the TSV7722 enhances energy efficiency in applications such as automotive smart mobility, solar panels, telecom infrastructure, and computer servers.

Features of the TSV7722 Operational Amplifier include:

Gain bandwidth product 22 MHz, unity gain stable
High accuracy input offset voltage: 50 µV typ., 200 µV max.
Low input bias current: 2 pA typ.
Low input voltage noise density: 7 nV/√Hz
Wide supply voltage range: 1.8 V to 5.5 V
Output rail-to-rail
Input common-mode range includes low rail
Automotive grade and shutdown versions available
Benefits:
- High frequency signal conditioning
- Optimized accuracy for low-side current sensing

More information on the TSV7722 High Bandwidth Op Amp is available on the ST website at STMicroelectronics TSV7722 product page.

The STMicroelectronics website address is www.st.com
[Reprinted with kind permission from STMicroelectronics - Release Date, 25th March, 2021]

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