US 2026/0189244 A1 · ASYNCHRONOUS ANALOG TO DIGITAL CONVERTER

Abstract

In described examples, an integrated circuit (IC) includes multiple subcircuits. The subcircuits include a first subcircuit that receives a current and sinks a portion of the current that is responsive to a threshold. In response to the current being greater than the threshold, the first subcircuit provides a difference between the current and the portion to a second subcircuit and asserts a signal corresponding to an ordinality of the first subcircuit. The second subcircuit is configured to repeat the actions with respect to the first subcircuit, with the second subcircuit in place of the first subcircuit and a third subcircuit in place of the second subcircuit, and with the difference in place of the current, in response to the IC comprising the third subcircuit.

Claims20

Dependent claims

A circuit comprising:

a first current mirror configured to receive a first current;
a second current mirror coupled to the first current mirror, wherein the second current mirror is configured to receive a voltage and a second current;
and
an output circuit coupled to the second current mirror, wherein the output circuit is configured to:
provide an output signal based on whether the second current is greater than the first current;
and
in response to the second current being greater than the first current, receive a third current, wherein the third current is a difference between the second current and the first current.

4 more elements

A system comprising:

an analog to digital converter including:
a first current mirror configured to receive a first current;
a second current mirror coupled to the first current mirror, wherein the second current mirror is configured to receive a first analog voltage and a second current;
an output circuit coupled to the second current mirror, wherein the output circuit is configured to:
provide a digital output based on whether the second current is greater than the first current;
and
in response to the second current being greater than the first current, receive a third current, wherein the third current is a difference between the second current and the first current;
and
an input circuit coupled to the second current mirror, wherein the input circuit is configured to receive a second analog voltage, wherein the second current is based on the difference between the first analog voltage and the second analog voltage, and the digital output is indicative of whether the second analog voltage is greater than the first analog voltage;
a control circuit coupled to the output circuit, wherein the control circuit is configured to receive the digital output and provide a control signal;
and
a gate driver coupled to the control circuit, wherein the gate drive is configured to receive the control signal and provide an output signal.

9 more elements

Dependencies are inferred from the claim text.

Asynchronous analog to digital converter

Life of this patent

Asynchronous analog to digital converter

Life of this patent

Abstract

Claims20