Figure 3-1. Key Components - EVM Top Side
3.1 Power Supply
The LMK5C33216 has VDD and VDDO supply pins that operate from 3.3 V ± 5%.
J1 is the main power terminal to the external power supply. Power SMA port VIN1 (J2) provides an alternative
connector style to apply power through coax cable. By default this SMA connector is not populated.
On the EVM, the default power configuration uses the onboard LDO regulators to power all VDD and VDDO pins
from an external 5-V supply input VIN1 to J1 (or J2). A Dual LDO regulator (U3) is used to power the VDD and
VDDO rails of the DUT and its peripheral circuitry. A separate LDO regulator (U4),also supplied from VIN1, is
used to power the onboard XO circuits.
EVM Configuration
AD
V
A
NCE INFO
R
MA
TION
8
LMK5C33216EVM User's Guide
SNAU260A – OCTOBER 2020 – REVISED FEBRUARY 2021
Copyright © 2021 Texas Instruments Incorporated
