Signal Processing Circuits For Analog to Digital Converters

by Larry Cicchinelli 2007

One of the limitations of many low cost, single supply, analog to digital converter ICs today is that they have a limited input voltage range. This note discusses various ways of implementing input processing to allow these devices to operate in the “real world.”

The ADS7870 is used as the example A/D but the equations and samples are generic enough so that you can configure the circuits for other devices.