Titlebook: Design of Low-Voltage CMOS Switched-Opamp Switched-Capacitor Systems; Vincent S. L. Cheung,Howard C. Luong Book 2003 Springer-Verlag US 20

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0893-3405 on the circuit level, a fast-switching methodology is proposed for the design of the switchable opamps to achieve switching frequency up to 50 MHz at 1V, which 978-1-4419-5358-2978-1-4757-3701-1Series ISSN 0893-3405

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Introduction,istors are required to operate in less than 1.2 V by 2004 and 0.9 V by 2008, while their threshold voltages are kept more or less unchanged (V. ≈ 0.7 V ~ 0.9 V) to avoid excessive leakage current. At low-voltage operation (as low as 1 V), digital circuits can still attain reasonable performance, but

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Analysis and Design Considerations of Switched-Opamp Techniques,have to be able to switch the total signal swing. Usually this occurs for switches that are connected to the output of opamps. In this chapter, the existing solutions for improving the switches driving capabilities are briefly discussed. Then the principle of the Switched-Opamp (SO) technique [CRA 9

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Analysis and Design Considerations of Switched-Opamp Techniques,ble-poly or linear-capacitor options provides linear integrated capacitors, which do not have any voltage supply requirements for proper operation. Though transistor stacking should be avoided in designing the opamps for maximum output swings at low-voltage operation, multi-stage operational amplifi

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Circuits Implementation and Layout Considerations of Switched-Opamp Circuits,ble opamp will be discussed. Due to the extra time required to turn on the switchable opamp, the operation speed of a switched-opamp circuit is slower than its switched-capacitor counterpart for a given current consumption. The fundamental turn-on time limit of a few switchable opamps reported in li

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