Interleaved Sampling Circuit With Non-Overlapping Clock Phases
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing interleaved sampling techniques suffer from timing skew and hardware inefficiencies, leading to performance degradation in analog-to-digital converters.
Innovation Solution
An interleaved sampling circuit with a clock generator producing non-overlapping clock signals and direct main clock input to sampling circuits, reducing timing skew and improving conversion speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional interleaved sampling techniques are used, then conversion speed can be increased, but timing skew and hardware inefficiencies cause performance degradation
Solution Approach 1:
The sampling circuit is divided into multiple parallel sampling sub-circuits that operate simultaneously with non-overlapping clock signals. Each sub-circuit handles a portion of the sampling task, allowing the system to achieve higher conversion speeds while maintaining performance through divided functionality rather than a single overloaded sampling path.
2Measurement precision
If multiple clock signals are generated for interleaved sampling, then sampling resolution can be improved, but clock skew increases causing timing errors
Solution Approach 1:
Non-overlapping clock signals are generated in advance through a clock generator that pre-synchronizes multiple clock phases. This preliminary generation of precisely timed clock signals ensures that each sampling sub-circuit receives its clock signal with minimal skew, allowing high sampling resolution to be achieved without significant timing errors.
3Productivity
If more sampling circuits are added to increase conversion speed, then productivity improves, but hardware complexity and power consumption increase
Solution Approach 1:
Multiple sampling sub-circuits are merged into a unified interleaved sampling architecture that shares common resources such as the clock generator and output processing paths. This combining approach allows the system to achieve high conversion speeds through parallel operation while reducing overall hardware complexity compared to having fully independent sampling circuits.
Data Source
AI summary
Certain aspects of the present disclosure are directed towards an interleaved sampling circuit. The interleaved sampling circuit generally includes: a clock generator having an input coupled to a main clock node and having a plurality of non-overlapping clock output nodes; and a plurality of sampling circuits, each of the plurality of sampling circuits having a first clock input coupled to a respective one of the non-overlapping clock output nodes and a second clock input coupled to the main clock node.