LMK04208: Power supply

Jingtai

Part Number: LMK04208
Other Parts Discussed in Thread: DAC7760, ADS6125

I'm going to share a power supply for ADS6125, DAC7760 and LMK04208, The load 2 is LMK04208. Is it ok? Is a linear regulator necessary to replace the switch regulator?

over 7 years ago

0 Jingtai over 7 years ago

Genius 4575 points

Why no answers for the power supply questions?

0 Timothy T over 7 years ago in reply to Jingtai

TI__Mastermind 28550 points

I expect you'll be fine with a switcher --> LDO. Does the power webench sim show expected spikes from switcher and the PSRR you will get from the LDO?

Please refer to the LMK04208 Users Guide schematic and datasheet section 9.3 and 10 for more info on power supply for LMK04208. If you're using a VCXO, that will be the most sensitive supply to noise.

73,
Timothy

0 Jingtai over 7 years ago in reply to Timothy T

Genius 4575 points

Thanks for your support.

Here is the sim.

Clock & timing

Clock & timing forum

LMK04208: Power supply