Phase Noise of External 32MHz for MKW01Z128

[jehangirparvere]

We plan to use a low power external oscillator for clocking the the MKW01Zxx for metering application.

As per MKW01xxRM Reference Manual, "

An external clock can be used to replace the crystal

oscillator...." Can you please provide the phase noise requirements for such an external clock?

Thanks.

[jorge_a_vazquez]

Hi Jehangir Parvereshi

Sorry for the late reply, I'm working in your case, and I was looking for information related with "noise requirements". Unfortunately we don't have requirements for this, and we don't have data for this measurements. I will continue looking information and I will keep you inform.

I could recommend you to check the designs for this chip (FRDM-KW019032, USB-KW019032) and check the 32 MHz crystal characteristics.

Sorry for the inconveniences that this may cause.

Best regards
Jorge Alcala

[jehangirparvere]

Hi Jorge:

The crystal is a passive device and crystal vendors do not provide phase noise data.

This data is available from crystal oscillator vendors. Can you please provide the part# of an
external 32 MHz crystal oscillator (TCXO) that you recommend to drive the XTAL in pin.

  Thanks.

[jorge_a_vazquez]

Hi Jehangir Parvereshi

The one used in the FRDM-KW019032 is "EXS00A-CS02368". You can check the components in the BOM document located in downloads: "FRDM-KW019032 Design Files" package. Hope this information helps.

Have a great day,
Jorge Alcala

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