AD converter

Details AD converter AD converter

1993-03-04

1995-02-28

Logan, Sharon D,

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341161, 341156, H03M 142

Patent

active

053941489

ABSTRACT:
A high speed, accurate AD converter operable at low supply voltage, even with low gain amplifiers, particularly for a serial-parallel or pipelined AD converter, has a sub AD converter in each block of the second and subsequent stages provided with an adjuster for adjusting the full scale reference voltage in accordance with the gain of the error amplifier of the preceding stage. Analog switches are rendered immune to low operating voltage by being supplied separate voltage higher than the supply voltage of the other components in their circuit.

REFERENCES:
patent: 4672361 (1987-06-01), Kokubo et al.
patent: 4999631 (1991-03-01), Sugimoto
patent: 5138318 (1992-08-01), Matsuzawa
patent: 5159342 (1992-10-01), Yotsuyanagi
"Session XVII; Analog Techniques', IEEE International Solid-State Circuits Conference", 1987, Stephan et al, pp. 210-211.

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