High-speed, high-resolution analog to digital converter subrangi

Details High-speed, high-resolution analog to digital converter subrangi High-speed, high-resolution analog to digital converter subrangi

1991-10-24

1993-09-28

Logan, Sharon D.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341122, 341118, H03M 114, H03M 108

Patent

active

052489736

ABSTRACT:
A very high-speed, high-resolution, low-noise, subranging analog-to-digital (AJD) converter architecture is described. It employs several sample-and-hold circuits in parallel. Also, the second-stage fine quantization flash A/D converter circuit of the conventional subranging A/D converter is replaced with a hybrid subranging converter of higher resolution and linearity. This is shown to achieve a very high dynamic range by minimizing noise due to the sample-and-hold and fine quantization circuits. This architecture permits construction of 16 to 18 bit 10 MHz A/D converters applicable for airborne radar systems.

REFERENCES:
patent: 4612533 (1986-09-01), Evans
patent: 4733217 (1988-03-01), Dingwall
patent: 4862171 (1989-08-01), Evans
patent: 4893124 (1990-01-01), Tsuji et al.
patent: 4973974 (1990-11-01), Suzuki
patent: 5072220 (1991-12-01), Petschacher et al.

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