ST’s low-power op amp portfolio includes several series covering different voltage ranges, as well as many possible combinations of power consumption and gain bandwidth, providing the optimal performance for the appropriate power budget.

ST’s low-power operational amplifier solutions include widely used devices, but also provide design engineers with upgrade options such as better accuracy, a standby feature and small packages.

TSU111: Nano-power (900 nA) and high accuracy (150 µV) op amp

With an ultra-low-power consumption of 900 nA (typical) and a tiny 1.2 x 1.3 mm outline, the TSU111 nano-power op amp consumes very little power and space. With a supply voltage ranging from 1.5 to 5.5 V, the TSU111 can be efficiently supplied by a coin-type Lithium battery or a regulated voltage in low-power applications. Its low minimum voltage allows the device to run longer and simplifies use in equipment powered by energy-harvesting systems such as photovoltaic (PV) cells.

The TSU111 offers an outstanding input offset voltage guaranteed below 150 µV along with a low noise of only 3.6 µVpp over a 0.1 to 10 Hz bandwidth, ensuring high accuracy in signal-conditioning circuits in battery-supplied portable applications.

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