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US 12,726,192 B2Granted
Bootstrap circuit and communication device including the same
AssigneeSamsung Electronics Co., Ltd.
InventorsSangheon Lee, Jungho Lee, Youngjae Cho, Michael Choi
Life of this patent
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Abstract
A bootstrap circuit for generating an output signal through a pre-charge operation and a sample operation, includes: a sampler including a sampling switch configured to sample an input signal, a first protection switch connected between an input node and the sampling switch, and a second protection switch connected between the sampling switch and an output node; and a driver configured to drive the sampler based on a power supply voltage and the input signal.
Claims16
A bootstrap circuit for generating an output signal through a pre-charge operation and a sample operation, the bootstrap circuit comprising:
- a sampler comprising:
- a sampling switch configured to sample an input signal,
- a first protection switch connected between an input node and the sampling switch, and
- a second protection switch connected between the sampling switch and an output node;
- and
- a driver configured to drive the sampler based on a power supply voltage and the input signal,
- wherein the bootstrap circuit further comprises a first capacitor and a level shifter configured to control a first voltage based on the power supply voltage and the input signal,
- wherein the level shifter comprises a second capacitor,
- wherein the driver comprises:
- a first p-channel metal-oxide semiconductor (PMOS) transistor comprising:
- a source,
- a body, and
- a drain connected to a power supply terminal;
- a second PMOS transistor comprising:
- a source,
- a body connected to the body of the first PMOS transistor, and
- a drain connected to the source of the first PMOS transistor,
- a bootstrap capacitor comprising:
- one end connected to the source of the second PMOS transistor, and
- another end;
- a first n-channel metal-oxide semiconductor (NMOS) transistor comprising a drain connected to the other end of the bootstrap capacitor;
- and
- a second NMOS transistor comprising a drain connected to the source of the first NMOS transistor and a source connected to a ground terminal, and
- wherein the first capacitor is the bootstrap capacitor.
21 more elements
A bootstrap circuit comprising:
- a sampler comprising:
- a sampling switch configured to sample an input signal,
- a first protection switch connected between an input node and the sampling switch, and
- a second protection switch connected between the sampling switch and an output node;
- and
- a driver configured to drive the sampler by adjusting a voltage applied to the sampler based on a logic level of a control signal,
- wherein the bootstrap circuit further comprises a first capacitor and a level shifter configured to control a first voltage based on a power supply voltage and the input signal, and
- wherein the level shifter comprises a second capacitor,
- wherein the driver comprises:
- a first p-channel metal-oxide semiconductor (PMOS) transistor comprising:
- a source,
- a body, and
- a drain connected to a power supply terminal;
- a second PMOS transistor comprising:
- a source,
- a body connected to the body of the first PMOS transistor, and
- a drain connected to the source of the first PMOS transistor,
- a bootstrap capacitor comprising:
- one end connected to the source of the second PMOS transistor, and
- another end;
- a first n-channel metal-oxide semiconductor (NMOS) transistor comprising a drain connected to the other end of the bootstrap capacitor;
- and
- a second NMOS transistor comprising a drain connected to the source of the first NMOS transistor and a source connected to a ground terminal, and
- wherein the first capacitor is the bootstrap capacitor.
21 more elements
A communication device comprising:
- a bootstrap circuit;
- and
- a control circuit configured to generate a control signal,
- wherein the bootstrap circuit comprises:
- a sampler comprising:
- a sampling switch configured to sample an input signal,
- a first protection switch connected between an input node and the sampling switch, and
- a second protection switch connected between the sampling switch and an output node;
- and
- a driver configured to drive the sampler based on the control signal,
- wherein the bootstrap circuit further comprises and a first capacitor a level shifter configured to control a first voltage based on a power supply voltage and the input signal, and
- wherein the level shifter comprises a second capacitor,
- wherein the driver comprises:
- a first p-channel metal-oxide semiconductor (PMOS) transistor comprising:
- a source,
- a body, and
- a drain connected to a power supply terminal;
- a second PMOS transistor comprising:
- a source,
- a drain connected to the source of the first PMOS transistor, and
- a body connected to the body of the first PMOS transistor;
- a bootstrap capacitor comprising one end connected to the source of the second PMOS transistor;
- a first n-channel metal-oxide semiconductor (NMOS) transistor comprising a drain connected to another end of the bootstrap capacitor;
- and
- a second NMOS transistor comprising a drain connected to the source of the first NMOS transistor and a source connected to a ground terminal, and
- wherein the first capacitor is the bootstrap capacitor.
23 more elements
Dependencies are inferred from the claim text.