Input Receiver Equalizer for Resistance Mismatch Compensation
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Solution Overview
Problem
As memory device operation speeds increase, input receivers struggle to accurately interpret input data, leading to potential device crashes or abnormal operation due to insufficient signal processing capabilities.
Innovation Solution
A data receiving circuit comprising a data input circuit, a latch circuit, and an equalizer, where the equalizer includes transistors configured to provide different voltages at specific nodes, compensating for resistance mismatches caused by manufacturing deviations to ensure accurate signal interpretation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If input receiver operation speed is increased to meet memory device requirements, then productivity is improved, but measurement precision deteriorates leading to incorrect input data interpretation
Solution Approach 1:
The equalizer circuit performs preliminary action by equalizing the voltages at the first and second nodes before the input signal is fully processed by the latch circuit. This preliminary voltage equalization ensures that when the high-speed input signal arrives, the circuit is already in an optimal state for accurate interpretation, preventing the degradation of measurement precision that would otherwise occur at high operation speeds.
2Reliability
If manufacturing precision is improved to reduce resistance mismatches, then reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The equalizer circuit implements self-service by automatically detecting and compensating for resistance mismatches between the first and second nodes through voltage equalization. Instead of requiring high manufacturing precision to ensure matched resistances, the circuit self-corrects for manufacturing variations, thereby maintaining reliable input data interpretation without increasing manufacturing precision requirements.
3Reliability
If voltage equalization is implemented to compensate for resistance mismatches, then reliability is improved, but device complexity increases
Solution Approach 1:
The equalizer circuit merges the voltage equalization function with the existing input receiver structure by connecting the equalizer between the data input circuit and latch circuit. This integration allows the equalizer to compensate for resistance mismatches and improve reliability without requiring a completely separate or complex additional circuitry, as it works cooperatively with the existing components.
Data Source
AI summary
A data receiving circuit is provided. The data receiving circuit includes a data input circuit, a latch circuit, and an equalizer. The data input circuit is configured to receive an input signal. The latch circuit is connected to the data input circuit and configured to output an output signal in response to the input signal. The equalizer is connected to the latch circuit and configured to provide a first voltage at a first node and a second voltage at a second node at an equalizing stage. The first voltage is different from the second voltage.