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Brian has lots of experience designing lab instruments from his university days. But that was before modern MCUs were available that have rich sets of analog functions on-chip. Here, Brian steps through how to design lab instruments using the Cypress PSoC 5LP MCU.
Answer: For isolated high performance ADCs, keep one eye on isolated clocks and a second on isolated power. SAR ADCs have traditionally been used for lower sample rates and lower resolution. Nowadays, fast, high precision, 20-bit SAR ADCs sampling at 1 MSPS like the LTC2378-20 and oversampled SAR ADCs with 32-bit resolution like the LTC2500-32 are available. When designing for high performance to utilize the ADC performance, very low noise is required across the complete signal chain. When additional isolation is required for a signal chain, performance will be impacted. There are three isola...