Last Updated: 12/20/2011; Version: *D
AN57821 introduces basic PCB layout practices to achieve 16 to 20 bit performance for the PSoC® 3 and PSoC 5 family of devices.
Introduction
To better understand the problems that may arise when using ADCs above 12 bits; it is a good idea to understand just how small a voltage an ADC can actually resolve. An 8-bit ADC with a range of 2 V detects a minimum value of 2 V/256 = 0.008 V or about 8 mV.
The following video introduces the designer to shared return paths and how to avoid them when designing a circuit board.
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Also:
AN57821 introduces basic PCB layout practices to achieve 16 to 20 bit performance for the PSoC® 3 and PSoC 5 family of devices.
Introduction
To better understand the problems that may arise when using ADCs above 12 bits; it is a good idea to understand just how small a voltage an ADC can actually resolve. An 8-bit ADC with a range of 2 V detects a minimum value of 2 V/256 = 0.008 V or about 8 mV.
The following video introduces the designer to shared return paths and how to avoid them when designing a circuit board.
View PDF
Also:
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