The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 2021
Filed:
Feb. 13, 2019
Semtech Corporation, Camarillo, CA (US);
Jonah Edward Nuttgens, Southampton, GB;
James Stephen Mason, Hampshire, GB;
Semtech Corporation, Camarillo, CA (US);
Abstract
A photodiode current comparison circuit has a first current source coupled to a circuit node configurable to operate in a first mode, a second current source coupled to the circuit node configurable to operate in a second mode opposite the first mode, and a third current source switchable to route a current to the circuit node in response to a data signal using a transistor coupled between the circuit node and the third current source. A photodiode is coupled to the circuit node. In a first configuration, an anode of the photodiode is coupled to the circuit node and a cathode of the photodiode is coupled to a power supply terminal. In a second configuration, a cathode of the photodiode is coupled to the circuit node and an anode of the photodiode is coupled to a power supply terminal. An amplifier provides an error signal of the photodiode.