This is the 2nd generation of the DAC and ADC board


To address the problem:
1. Common voltage reference
2. Thermal issue of ADC chips
3. Individual Power supply
4. Provide a low frequency passband: 0-10MHz, to allow signal dirctly loopback.


About the 2nd Generation of DAC/ADC board: DAC_ADC_2nd_Gen.pdf
Part of the final circuit(DAC side): MKID_DAC_revG.pdf
Layout placement: placement_01.pdf