jgk2004
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Hello all,
I am working on a DT sigma delta ADC and I am having trouble producing the Vrefp and Vrefm used to feedback my quantizer result. The question is...What is the best way to make these voltages. Just use the same resistive ladder in my quantizer but blow alot of current to provide a solid Vrefp and Vrefm? Then just add on a cap to filter any of the high switch noise? Or should I use high speed buffers off of a low current resistive ladder?
How do people commonly makes these voltages?
I would think the high current ladder would be my best bet because having two high speed buffers would consume alot of power.....Any other ideas???
Jgk
I am working on a DT sigma delta ADC and I am having trouble producing the Vrefp and Vrefm used to feedback my quantizer result. The question is...What is the best way to make these voltages. Just use the same resistive ladder in my quantizer but blow alot of current to provide a solid Vrefp and Vrefm? Then just add on a cap to filter any of the high switch noise? Or should I use high speed buffers off of a low current resistive ladder?
How do people commonly makes these voltages?
I would think the high current ladder would be my best bet because having two high speed buffers would consume alot of power.....Any other ideas???
Jgk