| 摘要 |
A reference voltage driving circuit and a pipelined analog to digital converter including the reference voltage driving circuit capable of providing a stable reference voltage even during a high speed/high resolution of analog-to-digital conversion using source follower circuits. Furthermore, a MDAC (Multiplying Digital to Analog Converter) requiring a high precision and a flash ADC (Analog to Digital Converter) requiring a relatively low precision are driven by respectively separate reference voltage driving circuits to thereby enable to curb an introduction of noise from the flash ADC into the MDAC requiring a high precision. Accordingly, there is no need of using a large capacity of capacitor for stabilizing the reference voltage, thereby enabling an embodiment with a smaller area and reducing the power consumption.
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