Invention Grant
US07994846B2 Method and mechanism to reduce current variation in a current reference branch circuit
失效
减小电流参考分支电路中电流变化的方法和机制
- Patent Title: Method and mechanism to reduce current variation in a current reference branch circuit
- Patent Title (中): 减小电流参考分支电路中电流变化的方法和机制
-
Application No.: US12465941Application Date: 2009-05-14
-
Publication No.: US07994846B2Publication Date: 2011-08-09
- Inventor: Oded Katz , Israel A. Wagner
- Applicant: Oded Katz , Israel A. Wagner
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Zaretsky & Associates, PC
- Agent Suzanne Erez
- Main IPC: G05F3/24
- IPC: G05F3/24

Abstract:
A feedback mechanism to reduce current variation observed in a current reference branch circuit by using body voltage control to compensate process, temperature and supply voltage variations. The current reference output voltage, which is proportional to the reference current, is sampled into a feedback loop, which controls the field effect transistor body voltage. The method and mechanism uses Corner Robust Current Reference in order to keep the design simple and diminish variation between Process Voltage Temperature (PVT) corners. This method exhibits small variation in the reference current magnitude.
Public/Granted literature
- US20100289563A1 Method and Mechanism to Reduce Current Variation in a Current Reference Branch Circuit Public/Granted day:2010-11-18
Information query
IPC分类: