Active Power Measurements (>1 Ma) - Texas Instruments SimpleLink Wi-Fi LaunchPad CC3235 Series User Manual

Hardware Description
2.6.2 Active Power Measurements (>1 mA)
Follow these steps to measure active operation of the CC3235 device:
1. Remove the VBAT jumper (J24).
2. Solder a 0.1-Ω resistor on a wire, which can be connected to an oscilloscope, as shown in
Or, attach a jumper wire between J24 so that it can be used with a current probe.
3. Measure the voltage across the resistor using an oscilloscope with a differential probe (for the current
probe, coil the wire around the sensor multiple times for good sensitivity). An ammeter can also be
used for this measurement, but the results may be erroneous due to the switching nature of the
current.
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CC3235x SimpleLink™ Wi-Fi
CC3235x)
Figure 17. Active Power Measurements (>1 mA)
®
LaunchPad™ Development Kit (LAUNCHXL-
Copyright © 2019, Texas Instruments Incorporated
www.ti.com
Figure 17.
SWRU539 – January 2019
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