DC1076A

DC1076A demonstration circuit is a filter diplexer. This circuit facilitates bench evaluation of high-speed analogue to digital converters in an environment where coaxial cable length exists between the ADC input and any non-absorptive terminations such as bandpass filters that will reflect sampling impulses. Technically DC1076 is an absorptive filter, not a true diplexer. True diplexers will also work, the original development used a true diplexer, hence the demo circuit name. However, a true diplexer of equivalent performance requires more parts and odd component values to achieve good crossover performance.

• LPF bandwidth is greater than 150MHz at 3dB cutoff
• 50 ohm impedance
• Out of band return loss is greater than 20dB at f greater than f3DB