Dual DAC Output Paths for Bandwidth and Amplitude Range
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Solution Overview
Problem
Optimizing a single high-speed output for both high bandwidth and high output amplitude range in advanced CMOS IC process nodes is challenging, as signals with high bandwidth requirements often compromise on amplitude range, and vice versa.
Innovation Solution
Implementing separate output signal paths from at least one digital-to-analog converter, allowing for optimization of one path for high-speed and high-bandwidth and another for high-speed and high output amplitude range, using switches and amplifiers to dynamically select between these paths, thereby avoiding the degradation of performance that occurs when trying to optimize a single path for both characteristics simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a single high-speed output is optimized for high bandwidth, then bandwidth performance is improved, but output amplitude range is reduced
Solution Approach 1:
The patent divides the single output path into two separate output paths: a first output path optimized for high bandwidth with minimal components, and a second output path optimized for high amplitude range that includes an amplifier stage. This segmentation allows each path to be independently optimized for its specific function without compromising the other.
Solution Approach 2:
The patent implements dynamic switching between the two output paths using a switch that can connect to either the first output path or the second output path based on the signal requirements. This dynamic configuration allows the system to adapt to different operational modes, selecting the appropriate path for high bandwidth or high amplitude range applications.
2Quantity of substance
If a single high-speed output is optimized for high output amplitude range, then amplitude range is improved, but bandwidth is reduced
Solution Approach 1:
The patent divides the single output path into two separate output paths: a first output path optimized for high bandwidth with minimal components, and a second output path optimized for high amplitude range that includes an amplifier stage. This segmentation allows each path to be independently optimized for its specific function without compromising the other.
Solution Approach 2:
The patent implements dynamic switching between the two output paths using a switch that can connect to either the first output path or the second output path based on the signal requirements. This dynamic configuration allows the system to adapt to different operational modes, selecting the appropriate path for high bandwidth or high amplitude range applications.
3Adaptability or versatility
If passive splitters are used to distribute signals, then signal distribution is achieved, but bandwidth is degraded
Solution Approach 1:
The patent extracts the signal distribution function from the output path by using a separate switch mechanism that can connect to either output path independently. This eliminates the need for passive splitters within the signal path, as the switch provides active, lossless signal routing that preserves bandwidth while still enabling signal distribution to multiple destinations.
Data Source
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AI summary
A signal source device includes at least one digital-to-analog converter, at least one connector, a first output path from the at least one digital-to-analog converter to the at least one connector, and a second output path from the at least one digital-to-analog converter to the at least one connector. A method of generating a analog signal includes generating at least one analog signal from at least one digital-to-analog converter, transmitting a first analog signal of the at least one analog signal along a first output path from the at least one digital-to-analog converter to at least one connector, and transmitting a second analog signal of the at least one analog signal along a second output path from the at least one digital-to-analog converter to the at least one connector.