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Original question:

LMX2615-SP: Which bypass capacitors are must ?

LMX2615-SP: Bypass capacitor capacitance value.

Arjun Sadasivan
Prodigy 10 points
Part Number: LMX2615-SP

Tool/software:

Dear Team,

1. The data sheet recommends to connect 10 uf capacitor at pin 7,25, 41, 44,53, 56 and 57.

Please comment if a lower value of capacitance can be connected.

2. Can a combination of capacitance be used to realise the equivalent bypass capacitance(like 2nos of  20uf capacitance in series to realise 10uf)

Regards

Arjun

  • 0
    TI__Guru** 102730 points

    Hi Arjun,

    The capacitor could be 1µF at pin 25, 41 and 57. 

    At other supply pins, if the capacitor is smaller than 10µF, phase noise may degrade. 

    Yes, you can combine two 4.7µF capacitors to get ~ 10µF, however, your pcb layout becomes difficult.