AN839 Datasheet, PDF (4/5 Pages) Silicon Laboratories – Novel Current-Sense Measurement with Automatic Offset Correction

AN839
Figure 2. Lab Setup for Offset-Voltage-Corrected Current-Sense Amplifier using the TS1001 and
the CY8C38 PSoC3 Microcontroller
Figure 2 shows the lab setup. The measured current is shown to match accurately the current estimated by the
current sense measurement system. The oscilloscope shows wake periods approximately every 600 msec, with
the offset cal period shown by the green trace (the gate voltage of Q1).
See the documentation for the TS1001 Op Amp and CY8C38 PSoC3 Microcontroller. For additional information,
contact Silicon Labs.
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Rev. 1.0