Patent ID: 6720902
Filing Date: 2004-04-13
Classification: H03M

Abstract:
A high dynamic range digital converter system comprising:a) a first programmable variable amplifier having a first input and first output; and for receiving an input voltage signal at the first input and producing a first attenuated voltage signal at the first output, wherein said first attenuated voltage signal represents first gain of the first programmable variable amplifier; b) a second programmable variable amplifier having a second output and second input, the second input being coupled to the first output of the first programmable variable amplifier for receiving said first attenuated voltage signal and for producing a second attenuated voltage signal at the second output, said second attenuated voltage signal representing a second gain of the second programmable variable amplifier; c) an analog-to-digital converter having an output port and an input port, said input port being coupled to the second output of the second programmable variable amplifier and for converting said second attenuated voltage signal to a digital signal at the output port; and d) a microprocessor coupled to the output port of the analog-to-digital converter for receiving said digital signal and said microprocessor coupled to the first and second programmable variable amplifiers for controlling the first and second gain.