3MHz chopper op amps; rail-rail I/O & tiny footprint

New Products |
By Graham Prophet

Complementing ST’s conventional op amps, the chopper-stabilized TSZ182 enables superior precision in instruments such as body-signal monitors, blood-glucose meters, industrial sensors, factory automation, and low-side current sensing. Offset voltage of 25 µV at 25°C enables high measurement resolution and accuracy without external trimming components, saving board space and the need for adjustments during production. Offset drift less than 100 nV/°C maintains accuracy over a wide temperature range and saves periodic auto-recalibration.


Operating from a 2.2V-5.5V supply 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 1 mA 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 (TSZ1821IYST) will also be available in March 2017 month for precision sensor-signal conditioning in equipment ranging from simple wiper modules or climate controls to autonomous-driving systems.


In the Mini-SO8 or DFN8 2 x 2 mm package, the amp is priced from $0.97 (1000).


ST Microelectronics;




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