AnsweredAssumed Answered

ADL5511 output for CW 100 MHz signal

Question asked by kvummidi on Feb 1, 2013
Latest reply on Feb 4, 2013 by enash

Hi i'm trying to use ADL5511, in a AGC loop.

I'm trying to test just the ADL5511 chip now. I'm applying sine wave at different power levels using a sig gen and using the Vrms output pin to measure the output. Please see the pic attached. 

I do have a 75 ohms connected between pin 2 and ground. 

I have a 33 nF at pin 14 (FLT 4), 100 pF at pin 3 (FLT 3).

I'm applying signals from a signal generator from -5 dBM to 15 dBm directly to pin 2.

The output at Vrms is always at ~1.7 V for that range. I have  pin 1 and 16 (FLT 2 and FLT 3) unconnected.

I have the enable high.


I'm not sure what im doing wrong. Any tips on how to trouble shoot ?