Patent ID: 9397635
Filing Date: 2016-07-19
CPC Classification: H03H

Claim Text:
1. A segmented digital step attenuator circuit, including: (a) at least one first segment comprising a plurality of individual thermometer encoded L-pad type bypassable attenuator circuits; and (b) at least one second segment comprising a plurality of individual binary encoded L-pad type bypassable attenuator circuits coupled in series with the at least one first segment of individual thermometer encoded L-pad type bypassable attenuator circuits; wherein applying a set of individual control signals to the first segments of individual thermometer encoded L-pad type bypassable attenuator circuits and a set of binary encoded control signals to the second segments of individual binary encoded L-pad type bypassable attenuator circuits selects an attenuation level for an input signal applied to the series coupled first and second segments.