Back to results
US 2026/0045925 A1Published application
Device and method for receiving 1-bit amplitude-modulated signals
AssigneeSTMicroelectronics International N.V.
InventorsMounir BOULEMNAKHER, Franck MONTAUDON
Life of this patent
Estimating the term…
Abstract
A device receives a 1-bit amplitude-modulated input signal. The device includes a differential amplifier circuit with first and second differential inputs, wherein the first input is configured to receive the input signal and the second input is configured to receive a common-mode signal having a variable value. The device also includes a circuit for modifying the value of the common-mode signal as a function of the value of an output signal of the receiver device obtained from an output signal of the differential amplifier circuit.
Claims26
A receiver device, comprising:
- a differential amplifier circuit comprising a first differential input configured to receive a 1-bit amplitude-modulated input signal and a second differential input configured to receive a common-mode signal having a value that is variable;
- a circuit configured to modify the value of the common-mode signal as a function of a value of an output signal of the receiver device obtained from an output signal of the differential amplifier circuit;
- and
- a comparator circuit configured to compare the output signal of the differential amplifier circuit with a high threshold value and a low threshold value, and to generate the output signal of the receiver device as having a first output value when the value of the output signal of the differential amplifier circuit changes from a value lower than the high threshold value to a value higher than the high threshold value, and as having a second output value when the value of the output signal of the differential amplifier circuit changes from a value higher than the low threshold value to a value lower than the low threshold value;
- wherein the circuit configured to modify the value of the common-mode signal is configured to define the value of the common-mode signal at a high common-mode value when the output signal of the receiver device has the first output value, and to define the value of the common-mode signal at a low common-mode value, lower than the high common-mode value, when the output signal of the receiver device has the second output value.
2 more elements
A method, comprising:
- pre-conditioning a 1-bit amplitude-modulated input signal based on a difference between a common-mode signal and the 1-bit amplitude-modulated input signal, and delivering as an output an amplification output signal;
- modifying a value of the common-mode signal as a function of a value of a receive output signal obtained from the amplification output signal;
- and
- comparing the amplification output signal with a high threshold value and a low threshold value, generating the receive output signal as having a first output value when a value of the amplification output signal changes from a value lower than the high threshold value to a value higher than the high threshold value, and having a second output value when the value of the amplification output signal changes from a value higher than the low threshold value to a value lower than the low threshold value;
- wherein modifying comprises setting the value of the common-mode signal equal to a high common-mode value when the receive output signal has the first output value, and setting the value of the common-mode signal equal to a low common-mode value, lower than the high common-mode value, when the receive output signal has the second output value.
2 more elements
A receiver device, comprising:
- a differential amplifier circuit having a first input configured to receive a 1-bit amplitude-modulated input signal and a second input configured to receive a common-mode signal;
- a comparator circuit configured to compare an output signal of the differential amplifier circuit with a high threshold value and a low threshold value, and to generate an output signal of the receiver device that transitions to a first value when the output signal of the differential amplifier circuit rises above the high threshold value and transitions to a second value when the output signal of the differential amplifier circuit falls below the low threshold value;
- and
- a common-mode control circuit configured to set the common-mode signal to a high common-mode value when the output signal of the receiver device has the first value and to set the common-mode signal to a low common-mode value when the output signal of the receiver device has the second value, wherein the low common-mode value is lower than the high common-mode value.
1 more element
Dependencies are inferred from the claim text.