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 Title: |
US4994692:
Quantizer system
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Wolke, Alan E.; Ringoes, NJ
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| Assignee: |
AMP Incorporated, Harrisburg, PA
other patents from AMP INCORPORATED (28145) (approx. 3,713)
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| Published / Filed: |
1991-02-19
/ 1989-11-15
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| Application Number: |
US1989000437476
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| IPC Code: |
Advanced:
H03K 3/0233;
H03K 5/08;
Core:
H03K 3/00;
more...
IPC-7:
H03K 3/295;
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| U.S. Class: |
Current:
327/050;
327/058;
327/078;
327/089;
Original:
307/494;
307/354;
307/359;
307/360;
307/362;
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| Field of Search: |
307/494,354,359,360,362
328/014
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| Priority Number: |
| 1989-11-15 |
US1989000437476 |
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| Abstract: |
A quantizer system for transforming an input signal into an appropriate one of two logic levels. The system compares the received input signal with a threshold voltage and provides an output signal at one of the two logic levels when the input signal exceeds the threshold voltage and at the other of the two logic levels when the input signal is less than the threshold voltage. Circuitry is provided to generate the threshold voltage at a level which is the midpoint of the input signal range. This circuitry includes a feedback loop around a differential amplifier to one input of which is applied the input signal. The feedback loops includes two peak detectors feeding an operational amplifier, the output of which is applied to the other input of the differential amplifier.
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| Primary / Asst. Examiners: |
Miller, Stanley D.; Ouellette, Scott A.
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| INPADOC Legal Status: |
None
Family Legal Status Report
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| Family: |
Show 2 known family members
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First Claim:
Show all 12 claims |
What is claimed is:
1. A system for quantizing an input signal to two levels, said input signal varying in a range between a first voltage level and a second voltage level, the system comprising:
- means for receiving said input signal;
- differential sensing means responsive to said input signal and a threshold voltage for providing a pair of output signals each corresponding to a respective polarity of the difference between said input signal and said threshold voltage, said differential sensing means including a differential amplifier having first and second inputs and first and second outputs, said first input being coupled to receive said input signal and said second input being coupled to receive said threshold voltage; and
- means for providing said threshold voltage at a level which is the midpoint of said input signal range, said threshold voltage providing means including a feedback loop around said differential amplifiers, said feedback loop having a first peak detector coupled to said differential amplifier first output and a second peak detector coupled to said differential amplifier second output.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
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| Description: |
Show description
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| Forward References: |
Show 8 U.S. patent(s) that reference this one
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