Signal settling device and method
AssigneeTexas Instruments Incorporated
InventorsVadim V. Ivanov, Kevin Huckins
Life of this patent
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Abstract
A method and device are configured for providing for both quick and accurate signal settling. A high accuracy component is configured in parallel with a high speed component. The high accuracy component may be an op-amp. The high speed component may be an OTA that is configured to be a non-linear OTA. Furthermore, an ADC is configured to internally provide both quick and accurate signal settling. For example, an ADC comprises an internal high speed OTA configured in parallel with a connected external op-amp. The OTA is configured to be a non-linear OTA.
Claims35
An input signal settling system for use in an analog to digital converter (“ADC”) system, the input signal settling system comprising:
- an ADC comprising an ADC input port;
- a high accuracy component configured to settle a first input signal with high accuracy and to communicate said high accuracy settled signal to said ADC input port;
- a resistor configured between an output of said high accuracy component and said ADC input port;
- and
- a high speed component configured to settle said first input signal with high speed and in parallel with said high accuracy component and to communicate said high speed settled signal to said ADC input port.
An input signal settling device comprising:
- a signal input port;
- a signal output port;
- a high accuracy component configured to receive an input signal from said signal input port, to settle said input signal with a high degree of accuracy, and to provide said settled input signal to said output port;
- and
- a fast settling component configured to receive said input signal from said signal input port, to settle said input signal with high speed, and to provide said settled input signal to said output port, for high accuracy, high speed signal settling.
An ADC input signal settling device comprising:
- a first ADC input port for receiving an input signal;
- a second ADC input port for receiving an accurately settled input signal;
- and
- an OTA comprising an OTA input and an OTA output, wherein said OTA input is configured in communication with said first ADC input port for receiving said input signal, wherein said OTA is configured to quickly settle said input signal, and wherein said OTA output is configured in communication with said second ADC input port for fast and accurate settling of said input signal.
An input signal settling system for use in an analog to digital converter (“ADC”) system, the input signal settling system comprising:
- an ADC comprising an ADC input port;
- an op-amp configured to settle a first input signal with high accuracy and to communicate said high accuracy settled signal to said ADC input port;
- a resistor configured between an output of said op-amp and said ADC input port;
- and
- an OTA configured to settle said first input signal with high speed and in parallel with said op-amp and to communicate said high speed settled signal to said ADC input port.
Dependencies are inferred from the claim text.