Adam Jason Lee

US Patent:

20220390903, Dec 8, 2022

Filed:

Jun 2, 2022

Appl. No.:

17/805070

Inventors:

- Manchester NH, US
Shunming Sun - Colorado Springs CO, US
Adam Lee - Portland OR, US

Assignee:

Allegro MicroSystems, LLC - Manchester NH

International Classification:

G04F 10/00
H03L 7/081
H03L 7/085

Abstract:

Methods and apparatus for an arrayed time to digital converter (TDC) having matched delay line sampling. In embodiments, a TDC includes a coarse counter circuit to provide an event coarse timing measurement for an event, a coarse counter delivery network to deliver a count value in the coarse counter circuit to a memory storage element circuit, and an array of matched delay lines to provide an event fine timing measurement to the memory storage element circuit. An array of event sample signal generators can generate signals for the event and an array of encoders can encode fine timing measurement information from the memory storage element circuit, where an output of the encoder and the event coarse timing measurement information provide a timestamp for the event. A global delay-locked loop can incorporate a matched delay line coupled to the array of matched delay lines.

US Patent:

20230051974, Feb 16, 2023

Filed:

Aug 12, 2021

Appl. No.:

17/400300

Inventors:

- Manchester NH, US
Shunming Sun - Colorado Springs CO, US
Adam Lee - Portland OR, US

Assignee:

Allegro MicroSystems, LLC - Manchester NH

International Classification:

G01D 18/00
H01L 27/146

Abstract:

Methods and apparatus for a detector system having a photodetector and an amplifier to amplify the photodetector signal. A discriminator generates an active output signal when the output from the amplifier is greater than a threshold. An injection circuit is coupled to the input of the amplifier. The injection circuit is configured to selectively inject a test pulse that mimics a pulse from the photodetector for verifying operation of the detector system.