PAM4 Transceiver ADC Front End With Integrated Equalization
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Solution Overview
Problem
Existing data communication systems are inadequate for high-speed applications, particularly in handling large amounts of multimedia data, and require improved spectral efficiency and power management to maintain performance across various channels.
Innovation Solution
A transceiver system that processes incoming data streams, generates a recovered clock signal, and includes a voltage gain amplifier for equalization, track and hold circuits, shift and hold buffer units, ADC modules, and DSP functions, eliminating the need for separate equalization modules and reference clock signals, and enabling efficient data transmission in PAM format.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If separate equalization modules and reference clock signals are used in existing communication systems, then signal processing functions are provided, but device complexity and power consumption increase
Solution Approach 1:
The patent combines the equalization function with the voltage gain amplifier by configuring the amplifier to perform both voltage amplification and equalization of the received signal. This integration eliminates the need for a separate equalization module, thereby reducing device complexity while maintaining signal processing capability. The merged amplifier simultaneously compensates for signal attenuation and distortion across different frequency components.
Solution Approach 2:
The voltage gain amplifier is designed to perform multiple functions: voltage amplification, equalization, and driving the track and hold circuits. This multi-functional design reduces the overall number of components required in the communication system, simplifying the device structure while ensuring reliable signal processing through a single versatile component.
2Use of energy by moving object
If multiple separate modules are used for signal processing, then comprehensive signal processing functions are achieved, but power consumption increases
Solution Approach 1:
The regulator is configured to attenuate noises associated with the power source by integrating noise filtering functions into the power management circuitry. This consolidation reduces the number of separate noise attenuation components, thereby lowering power consumption while maintaining effective noise suppression to ensure signal integrity.
3Productivity
If high-speed data communication is implemented to meet multimedia demands, then data throughput increases, but system complexity and power requirements increase
Solution Approach 1:
The transceiver is configured to process incoming data streams and generate recovered clock signals through an integrated architecture where the voltage gain amplifier performs equalization and directly drives the track and hold circuits. This merged structure achieves high-speed data communication capability while reducing the number of separate components, thereby managing system complexity despite the high throughput requirements for multimedia applications.
Data Source
AI summary
The present invention is directed to data communication. More specifically, embodiments of the present invention provide a transceiver that processes an incoming data stream and generates a recovered clock signal based on the incoming data stream. The transceiver includes a voltage gain amplifier that also performs equalization and provides a driving signal to track and hold circuits that hold the incoming data stream, which is stored by shift and holder buffer circuits. Analog to digital conversion is then performed on the buffer data by a plurality of ADC circuits. Various DSP functions are then performed over the converted data. The converted data are then encoded and transmitted in a PAM format. There are other embodiments as well.