Hybrid Driver Output Impedance Matching Without Calibration Circuits
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Solution Overview
Problem
Existing hybrid driving apparatuses require additional calibration circuits to match output impedance, leading to increased space and power consumption, while also needing to comply with standards and specifications for driving signals.
Innovation Solution
A hybrid driving apparatus comprising a first and second driving unit, and a resistor, where the driving units jointly or independently drive bonding pads based on transmission modes, utilizing a resistor for impedance matching without additional calibration circuits, allowing for power saving and compliance with standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional calibration circuits are used to match output impedance, then impedance matching is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent extracts and removes the additional calibration circuits from the driving apparatus. Instead of using separate calibration circuits to match output impedance, the invention uses the existing resistor in the feedback path to serve as the matching impedance, thereby eliminating unnecessary components and simplifying the device structure while maintaining impedance matching performance
Solution Approach 2:
The patent makes the resistor in the feedback path serve multiple functions: it acts as both the feedback element for amplification and as the matching impedance for impedance matching. This multi-functional design eliminates the need for separate calibration circuits, reducing device complexity and power consumption while maintaining reliable impedance matching
2Reliability
If additional calibration circuits are used to match output impedance, then impedance matching is improved, but power consumption increases
Solution Approach 1:
The patent removes the power-consuming calibration circuits from the system. By using the existing feedback resistor as the matching impedance, the invention eliminates the need for additional active components that would consume power, thereby reducing overall power consumption while maintaining impedance matching capability
Solution Approach 2:
The feedback resistor serves itself dual purposes: providing feedback for signal amplification and providing impedance matching. This self-service approach eliminates the need for separate power-consuming calibration circuits, as the existing passive component handles both functions without requiring additional power
3Reliability
If variable current stage is used to control signal amplitude, then compliance with standards is improved, but device complexity increases
Solution Approach 1:
The patent makes the feedback resistor serve multiple functions simultaneously: it provides feedback for amplification control and acts as the matching impedance for impedance matching. This multi-functional design simplifies the variable current stage by eliminating separate calibration circuits, reducing device complexity while maintaining compliance with signal standards
Data Source
AI summary
A hybrid driving apparatus and a method thereof are provided. The hybrid driving apparatus includes a first driving unit, a second driving unit, and a resistor. The first driving unit has a first output end. The second driving unit has a second output end coupled to a first bonding pad. The resistor is coupled between the first output end and the first bonding pad to serve as a matching impedance. When the driving apparatus operates in a first transmission mode, the first driving unit and the second driving unit jointly drive the first bonding pad. When the driving apparatus operates in a second transmission mode, the first driving unit and the second driving unit drive the first bonding pad and a second bonding pad respectively.