Coded data generation or conversion – Analog to or from digital conversion – Detecting analog signal peak
Patent
1996-12-23
1998-10-20
Hoff, Marc S.
Coded data generation or conversion
Analog to or from digital conversion
Detecting analog signal peak
341161, H03M 144
Patent
active
058253190
ABSTRACT:
A high speed wide bandwidth peak detector uses multiple peak detection stages that detect different sub-ranges of a full-scale analog signal range. Splitting the peak detector into multiple stages reduces the number of taps in each stage, and hence their capacitance, which increases their bandwidth. The number of taps can be further reduced by using a non-uniform resolution of the desired full-scale amplitude range. In the preferred embodiment, identical peak detection stages are separated by fixed gain stages that map the different sub-ranges to respective detection stages. This approach minimizes the effects of offset errors in the individual stages but requires gain stages that have wider bandwidths than the detection stages and which can be closely matched to maintain amplitude resolution.
REFERENCES:
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patent: 4876697 (1989-10-01), Whitfield
patent: 4990912 (1991-02-01), Selwa
patent: 5109225 (1992-04-01), Morita
patent: 5254995 (1993-10-01), Hantke
patent: 5539402 (1996-07-01), Bozeman
Analog-Digital Conversion Handbook, Prentice-Hall, Daniel Sheingold, Editor, 1986, pp. 129-131 and 420-427.
Murden Franklin M.
Ray Harvey J.
Analog Devices Inc.
Hoff Marc S.
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