Transimpedance Amplifier with Reconfigurable CRC High-Pass Filtering

The patent implements a reconfigurable filter that can dynamically switch between first-order and second-order high-pass filter configurations based on control signals. This dynamic reconfiguration capability allows the same circuit to adapt to different signal processing requirements, resolving the contradiction between adaptability and complexity by using a single circuit structure that can change its behavior rather than requiring multiple fixed circuits

The transimpedance amplifier is designed with a universal filter structure that can perform multiple functions (first-order high-pass filtering, second-order high-pass filtering) using the same hardware components. This multi-functionality approach allows one circuit to replace what would traditionally require multiple separate circuits, improving adaptability without proportionally increasing complexity

The filter order is made dynamic rather than fixed, allowing the system to switch between first-order and second-order configurations. This enables the circuit to use higher power consumption second-order filtering only when the application requires superior signal processing performance, while operating in lower power first-order mode for less demanding applications, thus resolving the contradiction between reliability and energy consumption

The patent changes the operational parameters of the filter by switching between different filter orders based on signal requirements. This parameter change approach allows optimization of the power-performance tradeoff by selecting the appropriate filter order (first or second) depending on the specific application needs, rather than always operating at the higher power consumption setting

The patent merges the filter functionality directly into the transimpedance amplifier circuit, combining what would traditionally be separate components (TIA and filter) into a single integrated structure. This merging approach reduces the overall silicon area by eliminating the need for separate filter circuits while maintaining the reconfigurable functionality through shared components and control mechanisms

The integrated circuit is designed to perform multiple functions (transimpedance amplification and variable-order high-pass filtering) within a single device structure. This multi-functionality allows the same hardware to provide both TIA operation and flexible filtering capabilities, reducing the total area required compared to having separate dedicated circuits for each function