REFERENCE CLOCK COMPLEMENTARY METAL-OXIDE SEMICONDUCTOR (CMOS) INPUT BUFFER WITH SELF-CALIBRATION AND IMPROVED ELECTROSTATIC DISCHARGE (ESD) PERFORMANCE

Reference clock CMOS input buffer with self-calibration and improved ESD performance. In one embodiment, a reference clock input buffer of an image sensor includes a Schmitt trigger configured to generate a clock signal having a falling edge and a rising edge. The falling edge and the rising edge ar...

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Bibliographic Details
Main Authors Zhang, Weiyi, Wu, Charles Qingle, He, Yanying
Format Patent
LanguageEnglish
Published 02.03.2023
Subjects
AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
BASIC ELECTRIC ELEMENTS
BASIC ELECTRONIC CIRCUITRY
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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Summary:Reference clock CMOS input buffer with self-calibration and improved ESD performance. In one embodiment, a reference clock input buffer of an image sensor includes a Schmitt trigger configured to generate a clock signal having a falling edge and a rising edge. The falling edge and the rising edge are separated by a hysteresis voltage. The Schmitt trigger includes a plurality of output switches and a plurality of voltage control switches that are individually coupled to individual output switches [M2-i] of the plurality of output switches. Voltage of the falling edge signal or the rising edge signal of the Schmitt trigger is adjustable by selectively switching at least one voltage control switch of the plurality of voltage control switches.
Bibliography:Application Number: US202117465184