Invention Grant
- Patent Title: Variable impedance sense architecture and method
- Patent Title (中): 可变阻抗感知架构和方法
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Application No.: US11540996Application Date: 2006-09-28
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Publication No.: US08036846B1Publication Date: 2011-10-11
- Inventor: Kalyana C. Vullaganti
- Applicant: Kalyana C. Vullaganti
- Applicant Address: US CA San Jose
- Assignee: Cypress Semiconductor Corporation
- Current Assignee: Cypress Semiconductor Corporation
- Current Assignee Address: US CA San Jose
- Main IPC: H03K17/16
- IPC: H03K17/16
Abstract:
A variable impedance sense (VIS) circuit (400) can detect a drift in the impedance of variable impedance circuits due to changes in operating conditions. Adjustments to binary impedance setting codes are made in response to a detected drift only when such changes do not increase a worst case variation from a target impedance. Adjustments can also be made in response to a detected input offset polarity.
Information query
