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New Nano-Power Op Amp from STMicroelectronics Improves Sensing Accuracy and Reduces Power Consumption


New TSU111 Op Amp is available in a tiny 1.2mm x 1.3mm size and ideal for medical monitors and wearables


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 TSU111’s 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.

Click for Larger Image - New Nano-Power Op Amp from STMicroelectronics Improves Sesning Accuracy 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 3.6µVp-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.


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


The company's Web site address is www.st.com.
[Reprinted with kind permission from STMicroelectronics - Release Date 13th December, 2016]


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