What type adc is to be interfaced with lpc2478
The type that solves the needs.
What was wrong with the ADC already available? Too few inputs? Too low resolution? Too slow sample rate? Wrong voltage range?
my project involves acquisition of physiological signals like temperature,ecg,these signals to be amplified and converted to digital form.Digital signals are to processed by arm lpc2478 and to be displayed on lcd.For this i need 8 channels,200ksps,spi interfacing,16 bit resolution for adc.These specifications are not in lpc2478.So,i need a suggestion for choosing adc to interface lpc2478
You wanted your name in bold, but "forgot" to mention such tiny details like that you needed 16-bit resolution, 200ksps (still no mention if that is for each channel or in total), SPI interface, ... Are there more things you have "forgotten" to mention?
The external ADCs we're using have a SPI interface alright, but are limited to 12 bit...
my project involves acquisition of physiological signals like temperature,ecg,these signals to be amplified and converted to digital form.Digital signals are to processed by arm lpc2478 and to be displayed on lcd.So,i need a suggestion for choosing adc to interface lpc2478 and what type of communication is needed for interfacing external adc with arm lpc2478. how much resolution is required for displaying real time display of ecg.