Patent ID: 6927717

Claim:
A circuit for converting an analog input at an input terminal to a digital output at an output terminal, the circuit comprising: an analog chopper circuit having an input coupled to the input terminal, and providing an output at a first predetermined rate f chop ; a first terminal and a second terminal, wherein a user-customizable buffer/amplifier is placed across the first and second terminals such that the output of the analog chopper at a first predetermined rate f chop is received at the first terminal and the output of the customized buffer/amplifier is received at the second terminal; an analog to digital converter including a quantizer circuit, the quantizer circuit having an input coupled to the second terminal, and providing an output at a second predetermined rate f quant ; a first digital filter and first decimator having an input coupled to the output of the quantizer circuit, and providing an output at a rate f quant divided by M (f quant /M); a second digital filter having an input coupled to the output of the first digital filter and first decimator; and a second decimator having an input coupled to the output of the second digital filter, and providing the digital output at a rate font divided by M×P (f quant /(M×P)).