Digital modulation scheme for data transfer
AssigneeAnalog Devices International Unlimited Company
InventorsRyan Pinto, Jonathan Ephraim David Hurwitz, Lawrence Getzin
Life of this patent
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Abstract
Various examples are directed to isolated analog-to-digital converter (ADC) circuits comprising a first side that is separated from a second side by an isolator. A first ADC positioned on the first side may be configured to convert a first analog input signal to a first side multi-bit digital signal. A digital modulator on the first side may be configured to convert the first side multi-bit digital signal to a first single-bit stream. A first filter positioned on the second side may be configured to receive the first single-bit stream across the first isolator and to generate a first reconstructed multi-bit digital signal using the first single-bit stream.
Claims20
An isolated analog-to-digital converter (ADC) circuit, comprising:
- a first multi-bit ADC positioned on a first side of the isolated ADC circuit, the first multi-bit ADC configured to convert a first analog input signal to a first side multi-bit digital signal, wherein the first side is separated from a second side of the isolated ADC circuit by a first isolator;
- a digital modulator on the first side, the digital modulator configured to convert the first side multi-bit digital signal to a first single-bit stream;
- and
- a first filter positioned on the second side, the first filter configured to receive the first single-bit stream across the first isolator and to generate a first reconstructed multi-bit digital signal using the first single-bit stream.
An analog-to-digital conversion method for an isolated analog-to-digital converter circuit comprising a hot side and a cold side separated from the hot side by a first isolator, comprising:
- converting a first analog input signal to a first side multi-bit digital signal using a first multi-bit analog-to-digital converter on the hot side;
- modulating the first side multi-bit digital signal to generate a first single-bit stream using a first modulator in the hot side;
- transmitting the first single-bit stream from the hot side to the cold side across the first isolator;
- and
- filtering the first single-bit stream from the first isolator to generate a first reconstructed multi-bit digital signal using a first filter on the cold side.
An isolated analog-to-digital converter (ADC) circuit, comprising:
- a multi-bit ADC at a first side of the isolated ADC circuit, the multi-bit ADC for converting a first analog input signal to a first side multi-bit digital signal, wherein the first side is separated from a second side of the isolated ADC circuit by a first isolator;
- means, at the first side, for converting the first side multi-bit digital signal to a first single-bit stream;
- and
- means for receiving the first single-bit stream across the first isolator and generating a first reconstructed multi-bit digital signal using the first single-bit stream.
Dependencies are inferred from the claim text.