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LMK04228: Integrated capacitance on LMK04228?

Part Number: LMK04228
Other Parts Discussed in Thread: LMK04828,

When comparing the documentation for the LMK04828 and LMK04228, I noticed that most of section 11 (Power Supply Recommendations) has been stripped out. This section includes a paragraph that states 

Integrated capacitance on the LMK0482x makes external high frequency decoupling capacitors (<1 nF) unnecessary. The internal capacitance is more effective at filtering high frequency noise than off-device bypass capacitance because there is no bond wire inductance between the LMK0482x circuit and the bypass capacitor. For lower-frequency decoupling and voltage stabilization, decoupling capacitors are still beneficial.

Does the LMK04228 have the same ingrated capacitance? Or do we need additional high frequency decoupling?

In general, can you swap the LMK04828 with LMK04228 without changes as long as the performance is acceptable?

 

  • Hi Aaron,

    As long as you have a ferrite bead isolating the board supply from the chip supply, then you should be fine with respect to high frequency decoupling/suppression. 

    You should be fine to swap the two devices with no changes, as long as the performance is acceptable.

    Thanks,

    Michael