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ADL5561 , Ultralow Distortion RF/IF Differential Amplifier

Question asked by rajani on Apr 25, 2013
Latest reply on Apr 29, 2013 by enash

Hello, I am using ADL5561 Low Noise Amplifier Evaluation Board of Analog Devices. I tested the board for Gain at different frequencies. It was providing a gain of 12 dB (Gain adjustment done referring the datasheet to obtain a Gain of 15.5 dB). For retesting the board I switched on the signal generator and spectrum analyzer but the power supply was switched off by mistake.  At that time the signal generator input was -100 dBm at 10 MHz frequency. The amplifier is now acting as an attenuator providing an attenuation of 20dB. Can you please help in debugging the problem.

 

 

Regards,

Rajani

Wavelet Group,

Pune.

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