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US 8,044,834 B2Granted
Track-and-hold circuit and A/D converter
AssigneeRenesas Electronics Corporation
InventorYuji Nakajima
Life of this patent
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Abstract
A track-and-hold circuit includes a first sampling circuit that samples an analog input signal, a second sampling circuit that samples the analog input signal, the second sampling circuit and the first sampling circuit being connected in parallel, a first amplifier that amplifies a signal output from the first sampling circuit, and a second amplifier that amplifies a signal output from the second sampling circuit.
Claims11
A track-and-hold circuit comprising:
- a first sampling circuit that samples an analog input signal;
- a second sampling circuit that samples the analog input signal, the second sampling circuit and the first sampling circuit being connected in parallel;
- a first differential amplifier that amplifies a signal output from the first sampling circuit;
- and
- a second differential amplifier that amplifies a signal output from the second sampling circuit,
- wherein each of said first and second differential amplifiers comprise first and second output nodes and a reset switch provided between the first and the second output nodes.
3 more elements
Dependencies are inferred from the claim text.