STMicroelectronics’ TSU111 single version and TSU112 dual version op amps 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 maximum and 11.5 kHz gain bandwidth make the TSU11x ideal for sensor signal conditioning, battery supplied, and portable applications.
Features
- Sub-micro ampere current consumption: ICC = 900 nA typical at +25°C
- Low offset voltage: 150 µV max at +25°C, 235 µV max over full temperature range (-40°C to +85°C)
- Low noise over 0.1 Hz 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 typical
- 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
Applications
- CO, O2, and H2S gas sensors
- PIR sensors alarms
- Signal conditioning for energy harvesting and wearable products
- Ultra-long life battery-powered applications
- Battery current sensing
- Active RFID tags
