Invention Grant
- Patent Title: Level shifters and high voltage logic circuits
- Patent Title (中): 电平移位器和高压逻辑电路
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Application No.: US12633675Application Date: 2009-12-08
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Publication No.: US08283964B2Publication Date: 2012-10-09
- Inventor: Marco Cassia
- Applicant: Marco Cassia
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM, Incorporated
- Current Assignee: QUALCOMM, Incorporated
- Current Assignee Address: US CA San Diego
- Agent Ramin Mobarhan
- Main IPC: H03L5/00
- IPC: H03L5/00

Abstract:
Level shifters and high voltage logic circuits implemented with MOS transistors having a low breakdown voltage relative to the voltage swing of the input and output signals are described. In an exemplary design, a level shifter includes a driver circuit and a latch. The driver circuit receives an input signal having a first voltage range and provides a drive signal having a second voltage range. The first and second voltage ranges may cover positive and negative voltages or different ranges of positive voltages. The latch receives the drive signal and provides an output signal having the second voltage range. The driver circuit may generate a control signal having a full voltage range based on the input signal and may then generate the drive signal based on the control signal. The level shifter may be used to implement a high voltage logic circuit.
Public/Granted literature
- US20110018606A1 LEVEL SHIFTERS AND HIGH VOLTAGE LOGIC CIRCUITS Public/Granted day:2011-01-27
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