22MHz precision dual op-amp draws 3.4mA

22MHz precision dual op-amp draws 3.4mA

Called TSV7722, it is aimed at high-speed signal conditioning and accurate current measurement in power-conversion circuits and optical sensors.

Input noise density of is 7nV/√Hz, and typical input bias current is 2pA enables accurate photodiode-current measurement in optical-sensing applications such as smoke detectors.

The amplifiers are unity-gain stable, and specified on a load of 47pF. “The TSV7722 can be used as an input buffer for ADCs,” said the company.

Operation is over 1.8 to 5.5V supply (1.7mA/channel at 5V) and -40 to 125°C. Parameters are specified at 1.8, 3.3 and 5V and the main specifications guaranteed over the whole temperature range.

The output is rail-to-rail while the input is not. Input common-mode range includes the negative supply rail, spanning from 100mV below the negative rail to 1.1V below the highest rail. Input offset is trimmed with a 3.3V rail and 0V input common mode.

Packaging options are DFN8 or MiniSO8, with SO8 following (and automotive versions in the last two).

Use is foreseen providing current measurements in automotive smart mobility, solar panels, telecom infrastructure and computer servers.

TSV7722 is included in ST’s 10-year longevity program to assures long-term supply.

TSV7721 is a single op-amp variant of the dual TSV7722, in a SOT23-5 package. TSV7723  is another dual, this time with individual shut-down pins, in a 10 lead MiniSO10 package.




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