Is a 500uW crystal required for the FX2LP device?

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Anonymous
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What are the maximum drive level requirements for the crystal used for the FX2LP?  The datasheet shows a 500uW minimum, while the CY4661-External USB hard disk drives and FX2LP DMB-T/H TV dongle reference designs use 100uW and 200uW max drive level crystals.  Have there been any reported issues using 100uW or 200 uW max drive crystals.  Due to space constraints, I am looking at using a 300uW max drive level crystal.

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Sananya_14
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750 replies posted 500 replies posted 250 solutions authored

Hello,

A 500 uW maximum drive level crystal is recommended since the power dissipation of the crystal can go upto 500uW with FX2LP and it will exceed the maximum drive level for a 300uW crystal which can cause ageing and reduction in accuracy. Kindly check the App Note for further crystal requirements.

Best Regards,

Sananya

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Sananya_14
Moderator
Moderator
Moderator
750 replies posted 500 replies posted 250 solutions authored

Hello,

A 500 uW maximum drive level crystal is recommended since the power dissipation of the crystal can go upto 500uW with FX2LP and it will exceed the maximum drive level for a 300uW crystal which can cause ageing and reduction in accuracy. Kindly check the App Note for further crystal requirements.

Best Regards,

Sananya

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