Title :
A Low-Noise Low-Drift Transducer ADC
Author :
McCartney, Damien ; Sherry, Adrian ; Hickey, Pat ; O´Dowd, John
Author_Institution :
Analog Devices, Limerick, Ireland.
Abstract :
An ADC is described that achieves the very high resolution and low offset-and gain-drift required in converting the low-level output from a load-cell transducer. The ADC comprises a tare DAC, a PGA and a sigma-delta converter. The filter in the converter has a special mode to enable it to rapidly track changes in the transducer output. The ADC is also capable of accurately calibrating it´s gain in spite of the very small full-scale of 10mV.
Keywords :
Bandwidth; Bridges; Capacitors; Clocks; Delta-sigma modulation; Electronics packaging; Finite impulse response filter; Quantization; Sampling methods; Transducers;
Conference_Titel :
Solid-State Circuits Conference, 1996. ESSCIRC '96. Proceedings of the 22nd European
Conference_Location :
Neuchatel, Switzerland
Print_ISBN :
2-86332-197-8
