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HMC662LP3E Logout Voltage & Sloop

Question asked by sss on Mar 19, 2015
Latest reply on Mar 20, 2015 by jdobler

Hi, all.

 

Our Customer measured Logout Voltage & Sloop with Evaluation PCB 124133 HMC662LP3E @8GHz.

 

Evaluation PCB 124133 setting is default,

J1:SG E83640B (HP/Agilent/Keysight)

J2:75 MULTMETER。(FLUKE)

J3,J4,J5:E3633 (HP/Agilent/Keysight) 3.3V/84mA,Normal mode.

 

In the datasheet specification,

LOG OUT & Error vs. Input Power, Fin = 8 GHz

Logout Voltage:1.25V@-30dBm

Output Sloop:14mV/dB

 

Our Customer measured data is, @8GHz

Logout Voltage:0.59V@-30dBm

Output Sloop:6.5mV/dB

 

Logout Voltage & Sloop data is both 1/2.

Other frequency (10,18GHz) also is similar 1/2 characteristics.

 

What is wrong at customer measurement?

Behavior of Evaluation PCB strange?

 

Please advise to me.

 

Best Regards,

sss

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