I'm looking for an 100 kHz or faster analog to digital converter with
very low DNL ( much lower than 0.1 lsb or 10%) to be used for pulse
height MCA analysis by creating a histogram of digitized count
values. Standard PCI interface cards have DNL of 0.2 lsb which
produces noisy histograms when
To help converging toward your actual requirements, could you be a
little more specific on what exactly you need?
Remember that the actual DNL accuracy specified in % of lsb depends
on the actual resolution (lsb) of your converter, so 40% for an 18 bit
converter is as accurate as 10% for a 16 bit
Application is time correlated single photon counting to measure
nanosecond fluorescent lifetimes. A laser pulse generates a start
pulse. The first photon emitted from the sample generates a stop
pulse. The time difference is converted to a voltage pulse (0 to
+10V), 2 usec duration (I could
For that type of pulsing application a sigma-delta ADC will not work,
you need a sampling rate type converter.
If you say that 12 bit would be sufficient, again if you then use a
good 16 bit ADC with, say, 0.5 lsb DNL, you can accumulate your data
into a 12 bit histogram (4096 bins) and achieve a
