Invention Grant
- Patent Title: Resistor DAC gain correction
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Application No.: US17682990Application Date: 2022-02-28
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Publication No.: US11996855B2Publication Date: 2024-05-28
- Inventor: Andrew Joseph Thomas , Roberto Sergio Matteo Maurino
- Applicant: Analog Devices International Unlimited Company
- Applicant Address: IE Limerick
- Assignee: Analog Devices International Unlimited Company
- Current Assignee: Analog Devices International Unlimited Company
- Current Assignee Address: IE Limerick
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: H03M1/06
- IPC: H03M1/06

Abstract:
Systems and techniques for Digital-to-Analog Converter (DAC) gain correction are described herein. A digital-to-analog converter (DAC) circuit can include a switch bridge circuit having a first leg and a second leg that define respective mutually exclusive first and second DAC signal paths. The DAC circuit can further include a first compensation circuit configured to provide a first compensation current to the first leg of the switch bridge to compensate for a current defect caused by a voltage drop across a portion of the first DAC signal path. The DAC circuit can also include a second compensation circuit configured to provide a second compensation current to a second leg of the switch bridge to compensate for a voltage drop across a portion of the second DAC signal path. The DAC circuit can be included in a larger circuit such as a continuous time sigma delta (CTSD) analog-to-digital converter (ADC).
Public/Granted literature
- US20230275592A1 RESISTOR DAC GAIN CORRECTION Public/Granted day:2023-08-31
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