Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Patent
1996-05-08
1998-10-06
Williams, Howard L.
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
H03M 300
Patent
active
058183744
ABSTRACT:
A noise-limiting, switched current delta-sigma modulator for use in, for example, an oversampling analog-to-digital converter. The modulator includes a first integrator having a relatively large bias current and one or more second integrators having relatively small bias currents. The modulator according to the present invention reduces power consumption and chip area.
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patent: 5414424 (1995-05-01), Cabler
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Tan et al. A Fully Differential Switched Current Delta-Sigma Modulator Using a Single 3.3 V Power Supply Voltage., Converters, Conference paper at International Symposium on Circuits and Systems, May 30-Jun. 2, 1994.
Tan Alow-Voltage Switched-Current Delta-Sigma Modulator, IEEE Journal of Solid State Circuits, vol. 30, No. 5, May 1995, pp. 599-603.
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"Fourth-order SI delta-sigma modulators for high-frequency applications", N. Tan, Electronics Letters, 2nd, vol. 31, No. 5, Mar. 1995.
"A Low-Voltage Swithched-Current Delta-Sigma Modulator", Nianxiong Tan and Sven Eriksson, IEEE Journal of Solid-State Circuits, vol. 30, No. 5, May 1995.
"Oversampling A/D Converters and Current-Mode Techniques", Nianxiong Tan, Linkoping Studies in Science and Technology Dissertations No. 360, Department of Electrical Engineering.
Telefonaktiebolaget LM Ericsson
Williams Howard L.
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