DAC Amplifier Supply Switching for Wide Low-Voltage Range
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a conflict between the need for devices to operate at low voltages and to enable them to operate over a wide voltage range, with existing technologies struggling to achieve both low power consumption and extended voltage range operation.
Innovation Solution
A Digital to Analog converter (DAC) circuit that dynamically modifies the supply voltage to an amplifier's output stage, using control circuitry to adjust the operating range based on input data, allowing the circuit to function effectively over a wide range while consuming low power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If device dimensions are reduced to increase integration density, then integration density improves, but operating voltage range deteriorates
Solution Approach 1:
The patent implements dynamic voltage scaling by modifying the supply voltage to the amplifier output stage based on operating conditions. The control circuitry adjusts the voltage supplied to the amplifier in response to DAC input data, enabling the system to adapt its voltage range dynamically. This resolves the contradiction by allowing high integration density with small transistors while expanding the effective operating voltage range through controlled voltage modification.
Solution Approach 2:
The patent changes the electrical parameter (supply voltage) of the amplifier stage to extend the operating range. By dynamically modifying the voltage supplied to the amplifier output stage, the system can operate effectively across a wider voltage range than the individual components would normally permit, thus resolving the contradiction between small component size and wide voltage range capability.
2Use of energy by moving object
If operating voltage is reduced to increase power efficiency, then power consumption improves, but operating range deteriorates
Solution Approach 1:
The system dynamically adjusts the amplifier supply voltage based on operational requirements. When low power operation is needed, the control circuitry reduces the voltage to the amplifier output stage, improving power efficiency. When extended range operation is required, the voltage can be increased. This dynamic adjustment capability resolves the contradiction by allowing the system to optimize power consumption while maintaining the ability to operate across a wide voltage range when needed.
3Quantity of substance
If component size is reduced to increase density, then integration density improves, but electric field intensity increases causing voltage range limitations
Solution Approach 1:
The patent applies different voltage levels to different parts of the circuit. The output stage of the amplifier receives a modified, elevated supply voltage from the control circuitry, while other parts of the circuit can operate at lower voltages. This local quality differentiation allows small, high-density transistors to function effectively by providing them with locally elevated voltage where needed, thus overcoming the electric field intensity limitations imposed by small dimensions.
Data Source
AI summary
A DAC circuit is described which includes a DAC coupled to an amplifier. The circuit is configured to dynamically change the operating range of the amplifier depending on the circuit operating requirements. In this way the DAC circuit may be operable in one of a plurality of available ranges so as to have an extended range of operation.