AD641-EB, Evaluation Board using AD641, 250 MHz logarithmic amplifier, high frequency DC-coupled demodulating

Description

• AD641-EB, Evaluation Board using AD641, 250 MHz logarithmic amplifier, high frequency DC-coupled demodulating. There are essentially four basic ways to configure the AD641EB. These include using one AD641 or two, either with or without the input attenuator. Among these four there are several techniques for offset nulling. This configuration is chosen to give maximum functionality from the onset. The configuration highlights two AD641s cascaded with an inductor at the interstate for offset nulling and no input attenuation used