Category: Hardware
Product Number: LTC2208
Software Version: NA
The signal input on the DC854B evaluation board (the CMOS version of the LTC2208 ADC board) uses two 1:1 transformers on the signal input. I understand the second transformer has a center tap for providing a common mode voltage, but why is an additional 1:1 transformer (MABA-007159-000000) used prior to that? Does that improve performance somehow?
From the DC854D schematic
https://www.analog.com/media/en/technical-documentation/eval-board-schematic/854dsch.pdf
The LTC2208 datasheet shows a single center-tapped transformer being used
https://www.analog.com/media/en/technical-documentation/data-sheets/2208fc.pdf
