We are running into difficulty identifying low latency ADC (and DAC and DSP) for our design. End-to-end overall latency is a key design goal. For example, even though the ADC12D800RF has approx. 1 GHz sample rate, it has about 20 ns delay/latency and is much too large/slow for our application.
What is the lowest latency ADC/DAC/DSP solution?
our design goal is less than 1 ns total latency for ADC+DAC+DSP, but would like to hear opinions even as low as 10 ns latency.
we guess that the 66AK2L06 Evaluation Module is a good start, but are less sure what ADC and DAC evaluation modules may be compatible and may have under 1ns latency (including any pipeline delays). we may need to go much higher than 1 GHz sampling, if there are pipelines in the ADC or DAC.
our preference is to build a prototype using evaluation boards
Some ballpark goals/needs for the system are:
1) >1Gsample/s, >9 bits, ADC with conversion latency <250 ps including any pipeline delays, etc
2) >1Gsample/s, >9 bits, DAC with conversion latency <250 ps including any pipeline delays, etc
3) DSP core capable of implementing a 6th order FIR/IIR filter with latency <250 ps per update
4) full-instantaneous-bandwidth ADC and DAC (no sampling/decimation)
ideally, the net latency through the DSP core, ADC, and DAC would be <500 ps,
and preference is usually ARM cores, if that is an option.
if you cannot suggest a <1 ns latency solution,
what is the highest rate ADC+DAC+DSP you might recommend?
thanks
t
