Circuit for a temperature sensor with 1 uA output current

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This circuit was used with a AD590 temperature sensor. The circuit was connected to mcu (STM32F407VGT6) and the resistor series is used to cause a detectable brownout. 273 K is equal to 273 uA because the output current is 1 uA/K. The following lowpass is used to cut frequencies above 16 Hz and to protect the mcu input against high currents. The voltage ranges from 0 V to 3,3 V.

published 10 years ago

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