Gain-Boosted Amplifier Circuit for Small High-Speed Signals
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Solution Overview
Problem
As semiconductor apparatuses operate at higher speeds and lower signal amplitudes, existing amplifier circuits struggle to accurately amplify reduced signal amplitudes, necessitating improved amplifier circuits for high-speed communication.
Innovation Solution
The proposed amplifier circuit includes a first input unit and a second input unit that change voltage levels of output nodes based on input signals, with current supply units and gain boosters to boost voltage levels and increase AC gain, enabling accurate output signal generation even with small input signal amplitudes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If amplifier circuits are designed for high-speed communication with reduced signal amplitudes, then communication speed is improved, but signal amplification accuracy deteriorates
Solution Approach 1:
The gain booster circuit proactively increases the voltage level of the first output node before the differential amplification process, ensuring that the signal has sufficient amplitude for accurate processing. This preliminary voltage boosting action prevents the accuracy deterioration that would otherwise occur with reduced signal amplitudes in high-speed communication.
Solution Approach 2:
The patent dynamically changes the voltage level parameter of the first output node using the gain booster circuit. By adjusting the voltage level based on the input signal characteristics, the system maintains accurate signal amplification even at high communication speeds where signal amplitudes are reduced.
2Measurement precision
If voltage level of first output node is boosted for predetermined time, then signal amplitude is increased for accurate communication, but power consumption increases
Solution Approach 1:
The first current supply unit supplies current for a predetermined time period to boost the voltage level, rather than continuously. This periodic action provides sufficient signal amplitude for accurate communication during critical periods while reducing overall power consumption by not maintaining high current supply continuously.
Solution Approach 2:
The patent dynamically controls the timing and duration of current supply to achieve voltage boosting only when necessary for signal transmission accuracy. This dynamic approach balances power consumption with signal quality requirements.
Data Source
AI summary
An amplifier circuit includes a first input unit, a second input unit, a first current supply unit, and a second current supply unit. The first input unit changes a voltage level of a first output node based on a first input signal. The second input unit changes a voltage level of a second output node based on a second input signal. The first current supply unit supplies a first current to the first output node based on a voltage level of the first output node and boosts the voltage level of the first output node for a predetermined time when the voltage level of the first output node is changed. The second current supply unit supplies a second current to the second output node based on the voltage level of the first output node.