SNAU298 October 2023
The LMKDB1120 has VDDA and VDD supply pins that operate from 1.8-V ± 10% and 3.3-V ± 10%.
For 3.3-V supply option, EVM has an on-board LDO which is selected by default to reduce the need for external power supply and operate the EVM using USB cable with a PC.
To use 1.8-V ± 10% supply on the EVM, J4 can be used to force external supply voltage. The EVM has two different method of supplying power to the device as listed in Table 3-3.
EVM Power Mode | Designator | Position | Supply Voltage | Description |
---|---|---|---|---|
External | J4 | External Supply | 1.8 V ± 10%, 3.3 V ± 10% | External supply option is selected. |
JP17 | 1-2 | |||
USB | J4 | Not Connected | 3.3 V ± 10% | USB 3.3 V supply option is selected. |
JP17 | 2-3 |