Wp 3.5: a 200mhz 15mw Bicmos Sampleand-hold Amplifier with 3v Supply
نویسندگان
چکیده
In sampling mode, S, and S, are on, the voltage across C,,tracks Vi,,, and 4 is configured as a unity-gain amplifier. In transition to the hold mode, S, and S, turn off and C,maintains a unity-gain loop around 4. In this topology, both charge injection of S, and S, and hold-mode droop appear as a common-mode voltage at the inputs of 4, allowing smaller values for C, and C , than in a single-ended case.
منابع مشابه
A 200-MHz 15-mW BiCMOS sample-and-hold amplifier with 3 V supply
A sample-and-hold amplifier designed for the front end of high-speed low-power analog-to-digital converters employs a BiCMOS sampling switch and a low-voltage amplifier to achieve a sampling rate of 200 MHz while allowing input/output voltage swings of 1.5 V with a 3-V supply. The circuit also incorporates a cancellation technique to relax the trade-off between the holdmode feedthrough and the ...
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