User manual

Figure 8. DIN user connector.
Figure 9. Input Divider.
Figure 10 VREFIO reference.
4. Power supplies and control
4.1 Internal power supplies
In Figure 11, IC16 limits the in-rush current when the device is connected to the USB port.
INA214 is a current shunt amplifier, with a gain of 100. With Vref = 0.75V and R163 = 15mΩ,
the output voltage is:
V ISNS_VBUS =100∙(V IN+ −V IN− )+0.75V=1.5∙I VU5V0 +0.75V(2)