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ADL5380 Insertion Loss Issue in Lower Frequencies (400MHz-2GHz)

Good Evening Sir/Madam,

We bought ADL5380 EVM  from Analog Devices.

Practical Observations

1. As per datasheet, this EVM provides 7dB insertion loss at 900MHz, but we observed that ADL5380 is providing 30dB insertion Loss.

2. This EVM is providing insertion loss as per the datasheet only after 2GHz.

  

Is there any need to tune the EVM. If so gently guide us to do so.

Thank You.