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Strange operation of HMC914

Question asked by taehankim on Jul 31, 2017
Latest reply on Jul 31, 2017 by taehankim

Hello,

 

I used HMC914 for high speed clock input stage circuit as attached.

 

When there is no input (no signal connected to the input), the RSSI value is 2.0V and

the LOS is high (3.3V). Then, I tied the two INP & INN pins with jumper cable, but the

RSSI value is the same (2.0V). I replaced the HMC914 device, but the same result I checked.

 

Any recommendation to debug the current status ?

 

Thanks in advance.

Tae-Han

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