SDR-Widget::What is it:
The SDR-Widget is an attempt to create an open-source audio/control card for the Amateur Radio SDR enthusiast. The design is based up the AK5394A ADC, CS4344 DAC and the Atmel AT32UC3A3256 processor.
The Beta version of the SDR-Widget has outperformed, for noise floor, all commercial sounds cards tested (Creative X-fi 5.1, E-MU 0202, FA-66, M-Audio Audiophile 192) The noise floor with shorted inputs is approximately -135db.
The kit uses 0805 sized SMT components and has a LQFP144_20 cpu. The kit requires a steady hand and a measured approach to building. It is not impossible for a beginner to build the kit but it is not recommended. Currently, there are no 'instructions' on how to assemble the kit. Schematics and component placement are the only aids provided.
The kitting system is rudimentary but functional. Kits will be shipped as first class mail in 2 bubble mailers
Prices and Ordering:
I will no longer be offering the SDR-Widget kits or blank pcb
sets. I now include the necessary gerbers in the document
archive. You can submit these files to a pcb manufacturer for the
creation of 1 or more sets fo boards. I encourage you to organize
a group order and have fun.
Alpa version of the SDR-Widget with optional LCD display