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Tiny Nano-Power Op Amp from STMicroelectronics Boosts Sensing Accuracy, Consumes Negligible Space and Power


Geneva, Switzerland – WEBWIRE

Geneva, December 12, 2016 - With its tiny 1.2mm x 1.3mm outline and typical current of only 900nA, the TSU111 nano-power op amp from STMicroelectronics helps cut the size and energy needs of analog circuits to the bare minimum in medical monitors, wearable electronics, gas detectors, pH sensors, infrared motion sensors, and payment tags.

The TSU111ís extremely low operating current is on par with the leakage current of some low-cost capacitors, and would take over 25 years to discharge a 220mAh CR2032 cell. Hence the op amp can be designed-in with negligible impact on overall system energy management.

At the same time, the TSU111 outperforms other nano-power op amps with its input-offset voltage of 150uV and 0.1-10Hz noise of 3.6ĶVp-p that ensure high accuracy in signal-conditioning circuits.

In addition, the superior gain-bandwidth product (GBWP) of 11.5kHz and the rail-to-rail input stage enable monitoring of environmental or biological signals. The very low input bias current of 10pA helps minimize the effects of parasitic currents in sensing devices like gas detectors or photodiodes.

The supply-voltage range of 1.5V to 5V allows the TSU111 to be powered from the same supply rail as logic circuitry thereby simplifying power-supply design and board layout. Moreover, the low minimum voltage allows the device to run longer as the battery discharges, and simplifies use in equipment powered by energy-harvesting systems such as photovoltaic (PV) cells.

The TSU111 is available immediately in the 1.2mm x 1.3mm DFN6 package or 2mm x 2.1mm SC70-5 (SOT323-5), priced from $0.69 for orders of 1000 pieces.

For further information please visit www.st.com/tsu111-pr


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