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The TSU111, TSU112 and the TSU114 operational amplifiers (op-amp) offer an ultra low-power consumption per channel of 900 nA typical and 1.2 µA maximum when supplied by 3.3 V. Combined with a supply voltage range of 1.5 V to 5.5 V, these features allow the TSU11x to be efficiently supplied by a coin type Lithium battery or a regulated voltage in low-power applications.
The high accuracy of 150 µV max. and 11.5 kHz gain bandwidth make the TSU11x ideal for sensor signal conditioning, battery supplied, and portable applications.
Key Features
- Sub-micro ampere current consumption: Icc = 900 nA typ. at 25 °C
- Low offset voltage: 150 µV max. at 25 °C, 235 µV max. over full temperature range (-40 to 85 °C)
- Low noise over 0.1 to 10 Hz bandwidth: 3.6 µVpp
- Low supply voltage: 1.5 V to 5.5 V
- Rail-to-rail input and output
- Gain bandwidth product: 11.5 kHz typ.
- Low input bias current: 10 pA max. at 25 °C
- High tolerance to ESD: 4 kV HBM
- More than 25 years of typical equivalent lifetime supplied by a 220 mA.h CR2032 coin type Lithium battery
- High accuracy without calibration
- Tolerance to power supply transient drops
Sample & Buy
| Part Number | Package | Packing Type | Temperature (°C) | Marketing Status | Budgetary Price (US$)* | Quantity | ECCN (US) | Country of Origin | More info | Order from Distributors | Order from ST | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||
| TSU111IQ1T | MLPD/DFN 1.2x1.3x0.5 6L P0.4 | Tape And Reel | -40 | 85 |
Active
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0.688 | 1000 | EAR99 | CHINA | Check Availability | Get sample | |
| TSU111ICT | SC70-5 | Tape And Reel | -40 | 85 |
Active
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0.688 | 1000 | EAR99 | MALAYSIA | Check Availability | Get sample | |
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors
Featured Videos
With today’s technologies, users can also receive an alert on their phone or a wearable device. ST’s S2-LP, sub-1GHz RF transceiver and the TSU111 operational amplifiers together with STM32 enable such enhanced alarms.
The P-NUCLEO-IKA02A1 pack is a ready to use CO detector including an STM32 Nucleo expansion board based on two TSU111 Op Amps and a Figaro TGS5141 CO sensor
Ecosystems
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Picture Part number Manufacturer Description 
P-NUCLEO-IKA02A1 ST STM32 Nucleo pack: electrochemical toxic gas sensor expansion board with CO sensor Part NumberSTM32 Nucleo pack: electrochemical toxic gas sensor expansion board with CO sensor
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| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| TSU111ICT |
Active
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SC70-5 | Industrial | Ecopack3 |
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| TSU111IQ1T |
Active
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MLPD/DFN 1.2x1.3x0.5 6L P0.4 | Industrial | Ecopack3 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
