Invention Application
- Patent Title: VOLTAGE AND CURRENT REFERENCE CIRCUITS
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Application No.: US18202093Application Date: 2023-05-25
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Publication No.: US20240393819A1Publication Date: 2024-11-28
- Inventor: Abdulkerim Coban
- Applicant: Silicon Laboratories Inc.
- Applicant Address: US TX Austin
- Assignee: Silicon Laboratories Inc.
- Current Assignee: Silicon Laboratories Inc.
- Current Assignee Address: US TX Austin
- Main IPC: G05F3/24
- IPC: G05F3/24 ; G05F1/567 ; G05F3/26

Abstract:
A voltage reference circuit can operate in a large supply voltage range, including a low supply voltage, and can operate with high PSRR. The voltage reference circuit supplies a voltage reference with a near zero temperature coefficient (TC) across a wide-temperature range. The voltage reference circuit develops a first current with a positive temperature coefficient from a first transistor and a second current with a negative temperature coefficient from a second transistor. The control terminals of the two transistors are supplied by respective outputs of two error amplifiers. The two currents are combined to develop a voltage reference across a resistor. The voltage reference has a near zero temperature coefficient.
Information query
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