Analog-to-digital converter with input signal range greater...

Details Analog-to-digital converter with input signal range greater... Analog-to-digital converter with input signal range greater...

2007-06-19

2007-06-19

Mai, Lam T. (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S155000

Reexamination Certificate

active

11280086

ABSTRACT:
An analog-to-digital converter device capable of measuring inputs beyond a supply voltage including: an N bit analog-to-digital converter powered by a supply voltage and a reference voltage; a range resolution stage capable of receiving inputs at higher voltages than the supply voltage, providing an input to the analog-to-digital converter, and outputting a logic value of one for the N+1th bit in response to an input signal higher than the reference voltage; and a bootstrapped input multiplexer stage for connecting low voltage input signals directly to the analog-to-digital converter and for connecting input signals that can exceed the supply voltage to the range resolution stage.

REFERENCES:
patent: 7078677 (2006-07-01), Chong et al.

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