About UsNew 3MHz Chopper Op-Amps with Rail-to-Rail Input and Output
The STMicroelectronics TSZ182 Op Amp is ideal for precision instruments such as body-signal monitors and industrial sensors
The TSZ182 dual precision op amp from STMicroelectronics combines low and extremely temperature-stable input-offset voltage with the added advantages of a 3MHz gain-bandwidth, rail-to-rail inputs and outputs, and ultra-small 2mm x 2mm DFN8 or Mini-SO8 package options.
Complementing ST’s popular conventional op amps, the chopper-stabilized TSZ182 enables superior precision in instruments like body-signal monitors, blood-glucose meters, industrial sensors, factory automation, and low-side current sensing.
The offset voltage of 25µV at 25°C enables high measurement resolution and accuracy without external trimming components, saving board space and the need for adjustments during production. Moreover, offset drift less than 100nV/°C maintains accuracy over a wide temperature range and saves periodic auto-recalibration thereby simplifying design and enhancing convenience for end users.
Operating from a 2.2V-5.5V supply and providing rail-to-rail inputs and outputs - a competitive advantage over some other precision op amps - the TSZ182 maximizes utilization of available dynamic range. The gain-bandwidth of 3MHz ensures consistent frequency response over a wide range, and the maximum operating current of just 1mA at 5V helps maximize runtime of battery-powered devices.
The extended operating-temperature range of -40°C to 125°C enables use in harsh outdoor or industrial environments. Automotive-qualified variants (TSZ182IYST) will also be available next month for precision sensor-signal conditioning in equipment ranging from simple wiper modules or climate controls to autonomous-driving systems.
Features of the TSZ182 Op-Amp
- Very high accuracy and stability: offset voltage 25 µV max. at 25°C, 35 µV over full temperature range (-40°C to 125°C)
- Rail-to-rail input and output
- Low supply voltage: 2.2 - 5.5 V
- Low power consumption: 1 mA max. at 5 V
- Gain bandwidth product: 3 MHz
- Automotive qualification
- Extended temperature range: -40°C to 125°C
- Micropackages: DFN8 2x2, SO8 and MiniSO8
- Benefits:
- Higher accuracy without calibration
- Accuracy virtually unaffected by temperature change
For more information on the TSZ182 dual precision op-amp, visit the ST website at STMicroelectronics TSZ182 Op-Amp product page.
The STMicroelectronics website address is www.st.com
[Reprinted with kind permission from STMicroelectronics - Release Date 2nd February, 2017]
