Patent ID: 6452521
Filing Date: 2002-09-17
Classification: H03M

Abstract:
A delta-sigma converter providing a digital signal representative of a process variable, comprising:an integrator circuit having an analog input range and providing an integrator output; a controller responsive to an output from the integrator circuit to generate a digital output within a digital output range, the digital output range representing the analog input range, the controller providing control signals, the integrator circuit being responsive to the control signals to provide the integrated output to the controller; a sensor input circuit coupled to the integrator circuit and including a sensor having an analog sensor range, the sensor input circuit being responsive to the control signals to provide a balanced analog sensor signal within the analog sensor range to the integrator circuit, the balanced analog sensor signal being representative of the process variable; and a mapping circuit coupled to the integrator circuit and responsive to the control signals to map the analog input range to the analog sensor range.