Configurable Switched-Capacitor Block for Reconfigurable ADC Functions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional analog-to-digital converters (ADCs) have a fixed architecture, limiting their reconfigurability and functionality, and rely on single-ended switched capacitor circuits, which restrict their ability to perform multiple analog functions efficiently.
Innovation Solution
A configurable switched capacitor block that can dynamically reconfigure between various analog functions such as amplification, integration, comparison, and modulation by using a microprocessor-controlled system with switched capacitors and clocking logic, allowing for real-time performance of multiple functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional ADCs use fixed architecture, then manufacturing is simplified, but reconfigurability and functionality are limited
Solution Approach 1:
The patent implements a universal circuit block that can perform multiple analog functions (integrator, amplifier, comparator) using the same physical circuit elements. The switched capacitor circuit is controlled by different clock signals to dynamically reconfigure its function, eliminating the need for separate dedicated circuits for each analog operation and thereby improving reconfigurability without proportionally increasing complexity.
Solution Approach 2:
The patent introduces dynamic reconfiguration capability where the circuit architecture can change during operation. By using clock-controlled switches to reassign the function of circuit elements between integrator, amplifier, and comparator modes, the system transitions from a static fixed architecture to a dynamic reconfigurable architecture, resolving the contradiction between adaptability and complexity.
2Adaptability or versatility
If conventional ADCs use single-ended switched capacitor circuits, then circuit design is simplified, but ability to perform multiple analog functions efficiently is restricted
Solution Approach 1:
The patent creates a universal switched capacitor block that can efficiently perform multiple analog functions by controlling the same physical circuit with different clock signals. The circuit elements are reused across integrator, amplifier, and comparator functions, improving multi-function capability while managing circuit configuration complexity through systematic clock control.
3Adaptability or versatility
If conventional ADCs have fixed architecture, then fabrication tradeoffs are predetermined, but flexibility to optimize for different applications is lost
Solution Approach 1:
The patent enables post-fabrication optimization by implementing dynamic reconfiguration capability. The same fabricated circuit can be programmed to operate as different analog functions (integrator, amplifier, comparator) depending on application requirements, providing application flexibility without requiring multiple fabrication processes or complex multi-function fabrication techniques.
Data Source
AI summary
A configurable switched capacitor block includes a switched-capacitor (SC) sampling circuit, a fully differential amplifier, an SC feedback circuit, and a comparator. The SC sampling circuit is coupled to receive an input signal and to selectively generate a sampled signal to a differential input of the amplifier. The SC feedback circuit is coupled between the differential inputs and the differential outputs of the amplifier to selectively control a feedback of the amplifier. The comparator is coupled to the differential outputs of the amplifier to generate an output signal. The configurable switched capacitor block has multiple modes of operation which are selectable by programming the SC sampling circuit and the SC feedback circuit.