Abstract: A frequency modulated continuous wave (FMCW) light detection and ranging (LIDAR) system that includes an optical source to generate light at a target frequency. The system also includes a first transistor to transmit a modulation current through a modulation path that includes the optical source and a modulation resistor. The system also includes electro optical circuitry coupled to the first transistor to produce a phase locked loop. The system also includes a second transistor to transmit a bias current through a bias path that includes the optical source and is separate from the modulation path, wherein the bias path is separate from the modulation path.
Type:
Grant
Filed:
December 6, 2022
Date of Patent:
January 9, 2024
Assignee:
Aeva, Inc.
Inventors:
Eric Bohannon, Garret Phillips, Bryce Bradford
Abstract: A current-limiting circuit for limiting rising of a current above a predetermined level. The circuit including forward- and reverse-conducting devices, each device including a MOS and a bipolar transistor, wherein ON-resistance of one of the devices is used instead of a current-sensing resistance for another of the devices; and a gate driver connected to the gates of the forward- and reverse-conducting devices for controlling the devices such that a channel of each of the devices simultaneously conducts a current.
Abstract: Proposed are a device, a magnetic-field sensor and a current sensor, the device having the feature that provision is made for a first magnetic-field sensing means, for a second magnetic-field sensing means, and for a third magnetic-field sensing means, a first output variable of the first magnetic-field sensing means being provided as a first input variable, a second output variable of the first magnetic-field sensing means being provided as a second input variable, the first input variable being provided as input variable for the second magnetic-field sensing means, and the second input variable being provided as input variable for the third magnetic-field sensing means.
Abstract: In an integrated circuit, a central reference generator (3) generates a setpoint signal determining the operating characteristic required to be common to some of the functional components of the circuit. Lines (4-1 to 4-n) distribute this signal among units of the circuit, each unit comprising a functional Component (2-n). In each unit, a local adjustment circuit (5-n) receives the setpoint signal and generates an adjustment value. Correction circuitry adjusts the operating characteristic of a device in the local adjustment circuit (5-n) as a function of the adjustment value. The device is placed in proximity to the functional component and configured in such a way that the operating characteristic which is thus imposed on the device is also imposed on this component.
Type:
Grant
Filed:
May 17, 1996
Date of Patent:
April 14, 1998
Assignee:
CSEM-Centre Suisse D'Electronique et de Microtechnique SA