Asymmetrical Differential Receiver Without Reference Voltage
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Solution Overview
Problem
Conventional receiving circuits in integrated circuits require a reference voltage for signal amplification, leading to increased complexity, power consumption, heat generation, and manufacturing costs, as well as susceptibility to noise and jitter, especially in high-speed and low-power operations.
Innovation Solution
A receiving circuit design that uses asymmetrical differential amplification circuits to generate output signals without a reference voltage, utilizing PMOS and NMOS transistors to amplify input signals independently, reducing the need for additional components and stabilizing capacitors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reference voltage is used for signal amplification in conventional receiving circuits, then signal amplification can be achieved, but circuit complexity increases and additional components are required
Solution Approach 1:
The patent extracts and eliminates the reference voltage generation circuit from the receiving circuit. By using asymmetrical differential amplification where one input terminal receives a signal and the other receives a complementary signal, the circuit no longer requires a separate reference voltage generation path, thereby reducing circuit complexity while maintaining signal amplification capability
Solution Approach 2:
The asymmetrical differential amplification circuit performs multiple functions simultaneously: it amplifies the differential signal between two input terminals while inherently providing the reference function that previously required a separate reference voltage circuit. The second amplification circuit further processes the same input signals to provide additional output, making the circuit more versatile
2Stability of the object's composition
If reference voltage generation and filtering components are added to conventional receiving circuits, then signal reference stability is improved, but power consumption increases
Solution Approach 1:
The patent removes the reference voltage generation and filtering components entirely from the circuit. The asymmetrical differential amplification structure inherently provides stable reference functionality through its circuit topology, eliminating the need for separate power-consuming reference voltage circuits while maintaining signal stability
3Measurement precision
If additional components for reference voltage generation are included in receiving circuits, then amplification accuracy is improved, but heat generation increases
Solution Approach 1:
The patent extracts and eliminates the additional reference voltage generation components that cause heat generation. The asymmetrical differential amplification circuit achieves amplification accuracy through its inherent circuit design where the two amplification circuits process complementary signals, providing accurate amplification without the heat-generating reference voltage circuitry
4Adaptability or versatility
If reference voltage circuits are added to receiving circuits, then signal reference function is provided, but circuit footprint increases
Solution Approach 1:
The patent removes the separate reference voltage circuit blocks from the receiving circuit design. The signal reference function is integrated into the asymmetrical differential amplification structure itself, where the circuit topology provides reference functionality without requiring additional physical space for separate reference voltage generation and filtering components
Solution Approach 2:
The patent merges the reference voltage function with the differential amplification function into a single integrated circuit structure. The asymmetrical differential amplification circuit simultaneously performs signal amplification and provides the reference function, consolidating multiple functions into one compact block that reduces overall circuit footprint
5Stability of the object's composition
If reference voltage generation components are included in receiving circuits, then signal reference stability is improved, but manufacturing cost increases
Solution Approach 1:
The patent extracts and eliminates the reference voltage generation components from the receiving circuit design. By using asymmetrical differential amplification, the circuit achieves reference voltage stability through its inherent circuit topology rather than through additional components, thereby reducing manufacturing complexity and cost
Solution Approach 2:
The asymmetrical differential amplification circuit provides multiple functions including signal amplification and reference voltage stabilization within a single circuit structure. This multi-functionality reduces the total component count and simplifies manufacturing processes, leading to lower production costs while maintaining reference stability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances signal accuracy, reduces noise and power consumption, and minimizes circuit area, while eliminating the need for reference voltage generation and stabilization components, thus improving performance and efficiency in high-speed and low-power environments.
Implementation Method 1
a first amplification circuit, which receives a first signal through a first positive input terminal and receives a second signal through a first negative input terminal to generate a first output signal by differentially amplifying the first and second signals
Implementation Method 2
a second amplification circuit, which receives the second signal through a second positive input terminal and receives the first signal through a second negative input terminal to generate a second output signal by differentially amplifying the second and first signals
Implementation Method 3
a first PMOS transistor, configured to change a voltage level of a first negative output node based on the first signal; a second PMOS transistor, configured to change a voltage level of a first positive output node based on the second signal; a first NMOS transistor, configured to change a voltage level of a second negative output node based on the first signal; and a second NMOS transistor, configured to change a voltage level of the first positive output node based on the second signal
Data Source
AI summary
A receiving circuit includes a first amplification circuit and a second amplification circuit. The first amplification circuit may generate a first output signal by asymmetrically and differentially amplifying first and second signals. The second amplification circuit may generate a second output signal by asymmetrically and differentially amplifying the second and first signals.