Cinterion
®
LGA DevKit User Guide
4.12 Power Supply
27
lga_devkit_ug_v02
2019-05-27
Preliminary
Page 15 of 28
4.12.2
External Reference Supply
To drive/operate the LGA DevKit's interfaces at certain voltage levels, an external reference
voltage may be connected. By default, i.e., without an external reference voltage connected,
the interface operates at 3V to meet the DSB75/DSB-Mini requirements. But if it is required to
operate the interface at another voltage, an external source in the range between 1.2V...5V can
be connected to "REF IN" and "GND" as shown in
Figure 11:
External reference supply and pin header for free level shifter