SI501-EVB Datasheet, PDF (10/19 Pages) Silicon Laboratories – USB plug-in board that allows for evaluation of the Si50x family of CMEMS oscillators.

Si501/2/3/4-EVB
5. Current Sense Resistor
Figure 6. Current Sense Resistor Location
Each device site has a 1.0  resistor in series with the VDD supply of that device. Both sides of that resistor are
connected to a set of test points. This test point pair can be used to measure the voltage across that supply
resistor, which indicates the supply current consumed by the respective device.
6. Outputs
Figure 7. SMA Outputs
Each device site output is connected to a SMA connector through a series resistor. J1 is the SMA connector output
of the on-board Si504, with J2 through J4 corresponding to evaluation sites U2 through U4.
10
Rev. 0.1