Dual gate oxide analog circuit architecture with dual voltage supplies and associated method
AssigneeMStar Semiconductor, Inc.
InventorsHenry Tin-Hang Yung, Chao-Ping Huang, Steve Wiyi Yang
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Abstract
An analog circuit architecture is fabricated with dual gate oxides and dual voltage supplies. In the analog circuit architecture, different kinds of devices/transistors with different gate oxide thicknesses are biased by different voltages, such that advantages of each device technology are mixed to enhance total performance of the analog circuit. For example, thin oxide 0.18 um transistors are biased at 1.8V for higher speed and lower power consumption, whereas thick oxide 0.35 um transistors are biased at 3.3V for a wider signal swing range.
Claims11
A multi-power multi-gate-oxide pipeline analog-to-digital converter (ADC) comprising:
- a plurality of pipeline modules, each pipeline module comprising:
- a plurality of first devices powered by a first voltage;
- a plurality of second devices powered by a second voltage,
- wherein the second voltage is different from the first voltage;
- an input circuit;
- an output circuit;
- and
- a core circuit,
- wherein the ADC is an analog circuit for processing an analog signal, the input circuit and the output circuit comprise a first portion of the first devices and the second devices, the core circuit comprises a second portion of the first devices, the input circuit and the output circuit respectively receive and transmit a high-swing signal, and the core circuit is connected between the input circuit and the output circuit for signal processing of the high-swing signal received from the input circuit.
A multi-power multi-gate-oxide pipeline analog-to-digital converter comprising:
- a plurality of pipeline modules, each pipeline module comprising:
- a plurality of first devices powered by a first voltage;
- a plurality of second devices powered by a second voltage,
- wherein the second voltage is different from the first voltage;
- a sample/hold circuit,
- an output amplifier;
- and
- a core circuit,
- wherein the sample/hold circuit and the output amplifier comprise a first portion of the first devices and the second devices, a core circuit comprises a second portion of the first devices, the sample/hold circuit and the output amplifier receive and transmit a high-swing signal respectively, and the core circuit is connected between the sample/hold circuit and the output amplifier for processing the high-swing signal received from the sample/hold circuit.
Dependencies are inferred from the claim text.