I am a novoice in FPGAs. My application needs an a/d converter on a FPGA. Is it possible to design an a/d converter on FPGA. I am using Altera Nios FPGA. Any info is appreciated.
Thank you, Srikanth
I am a novoice in FPGAs. My application needs an a/d converter on a FPGA. Is it possible to design an a/d converter on FPGA. I am using Altera Nios FPGA. Any info is appreciated.
Thank you, Srikanth
--
--Ray Andraka, P.E. President, the Andraka Consulting Group, Inc.
401/884-7930 Fax 401/884-7950 email snipped-for-privacy@andraka.com"They that give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -Benjamin Franklin, 1759
It all depends on the resolution/speed you need. Tracking ADCs, which use a DAC and comparitor, are simple. The DAC can be single pin PWM, or Rate Multiplier - for better performance, external Vcc/Vref, and buffer all help. Gnd and Vcc lines on FPGAs are NOT low noise analog nodes !
Sigma-Delta ADCs are also simple, but need an integrator/Vref/Slice for best performance.
If it is a closed-loop system, where you are more interested in a balance-point than absolute precision/linearity, then the very simple single slope RC ramp can be used. -jg
FPGA. Is
FPGA.
Any ADC on an FPGA is going to require something externally, so why not use a cheap external ADC or a small 8 pin micro with an ADC?
-- Best Regards, Ulf Samuelsson ulf@a-t-m-e-l.com This is a personal view which may or may not be share by my Employer Atmel Nordic AB
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.