question about ADC

kookooli

Hi friends,
i have a 50-60 Hz signal and i want to make samples very fast, signal period is 20ms and i want to have about 5000 samples in each period(1 period is enough), i wanted to do it with AVR but AVR sampling rate is about 15KSPS that would be 300 samples in each period and it is too low,
i wanted to know is there any module that do this for me ?
if there is no module, what ADCs do you suggest me ?
and there is one more thing that i dont know if i use ADCs where should i save those samples(5000 samples)?

Mike Green

The Stamps are too slow for this, but the Propeller can do this. You're talking about a burst of 5000 samples in 20ms which is a 250KHz rate. Look at the Propeller AppNote #1 (AN001) for details in the comments at the beginning of ADC.spin. The Propeller has 32K bytes of shared main memory, so there's plenty of room for the samples. These can be sent to an attached PC over a serial port or written to a file on an SD card (see AN006 for details on SD card I/O).