Wideband track-and-hold amplifier
AssigneeSamsung Electronics Co., Ltd.
InventorsMichael Byung Choi, Hong-rak Son, Jung-eun Lee
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Abstract
A wideband track-and-hold amplifier is provided. The wideband track-and-hold amplifier is provided in front of an analog-to-digital converter, receives and samples an analog signal, and transfers the sampled signal to the analog-to-digital converter, wherein an output load unit having an inductance component is connected to an input terminal of the analog-to-digital converter. Therefore, it is possible to compensate for a high capacitance component of an analog-to-digital converter, to increase the bandwidth of an output signal, and to improve system linearity.
Claims13
A wideband track-and-hold amplifier provided upstream of an analog-to-digital converter, comprising:
- a sampling unit which receives and samples an analog signal;
- a transconductor unit which includes an output terminal connected to the analog-to-digital converter, and transfers the sampled signal to the analog-to-digital converter;
- and
- an output load unit disposed between the transconductor unit and the analog-to-digital converter and which resonates the sampled signal that is transferred to the analog-to-digital converter.
A wideband track-and-hold amplifier provided upstream of an analog-to-digital converter, comprising:
- an input terminal which receives an analog signal;
- a first MOS transistor, being a P-type MOS transistor, whose source is connected to the input terminal;
- a hold capacitor having one end connected to the drain of the first PMOS transistor;
- a second MOS transistor, being a N-type MOS transistor, whose gate is connected to the drain of the first MOS transistor;
- an output terminal formed at the drain of the second MOS transistor and connected to the analog-to-digital converter;
- and
- an output load unit connected to the output terminal.
Dependencies are inferred from the claim text.