US 11,894,855 B2 · Analog-to-digital converter calibration systems and methods

Abstract

Techniques for facilitating analog-to-digital converter calibrations are provided. In one example, a method includes, for each of a plurality of time instances, generating a first ramp signal started at the time instance relative to a respective start of a first counter signal and generating a respective comparator output signal based on the first ramp signal and a first threshold signal. The method further includes capturing a respective first value of the first ramp signal in response to a transition of the respective comparator output signal. The method further includes determining a respective second counter value of a second counter signal based on the respective first value. The method further includes determining a scaling factor based on the second counter values and the time instances. Each of the first values is associated with the same counter value of the first counter signal. Related devices and systems are also provided.

Claims20

Dependent claims

A method comprising:

for each time instance of a plurality of time instances:
generating a first ramp signal started at the time instance relative to a respective start of a first counter signal;
generating a respective first comparator output signal based on the first ramp signal and a first threshold signal, wherein the respective first comparator output signal is associated with a first state or a second state;
capturing a respective first value of the first ramp signal in response to a transition of the respective first comparator output signal from the first state to the second state;
and
determining a respective second counter value of a second counter signal based on the respective first value;
and
determining a scaling factor based on the second counter values and the plurality of time instances, wherein each of the first values is associated with the same first counter value of the first counter signal.

5 more elements

A system comprising:

an analog-to-digital converter (ADC) configured to:
for each time instance of a plurality of time instances:
generate a first ramp signal started at the time instance relative to a respective start of a first counter signal;
generate a respective first comparator output signal based on the first ramp signal and a first threshold signal, wherein the respective first comparator output signal is associated with a first state or a second state;
capture a respective first value of the first ramp signal in response to a transition of the respective first comparator output signal from the first state to the second state;
and
determine a respective second counter value of a second counter signal based on the respective first value;
and
a logic device configured to determine a scaling factor based on the second counter values and the plurality of time instances, wherein each of the first values is associated with the same first counter value of the first counter signal.

6 more elements

Dependencies are inferred from the claim text.

Analog-to-digital converter calibration systems and methods

Life of this patent

Analog-to-digital converter calibration systems and methods

Life of this patent

Abstract

Claims20