Pipelined analog-to-digital converter
AssigneeTexas Instruments Incorporated
InventorsArun MOHAN, Neeraj SHRIVASTAVA
Life of this patent
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Abstract
An analog-to-digital converter including a first stage and a second stage. The first stage includes a first sample-and-hold (SH) having an input coupled to a voltage input node of the ADC, and having a first SH output. The first stage also includes a buffer, a first flash converter and a first digital-to-analog converter (DAC). The buffer has an input coupled to the first SH output and has a buffer output. The first flash converter has an input coupled to the first SH output, and has a first flash converter output. The first DAC has an input coupled to the first flash converter output. The second stage includes a second flash converter having an input coupled to the buffer output.
Claims20
An analog-to-digital converter (ADC), comprising:
- a first stage including:
- a first sample-and-hold (SH) having an input coupled to a voltage input node of the ADC, and having a first SH output;
- a buffer having an input coupled to the first SH output, and having a buffer output;
- a first flash converter having an input coupled to the first SH output, and having a first flash converter output;
- and
- a first digital-to-analog converter (DAC) having an input coupled to the first flash converter output;
- and
- a second stage including a second flash converter having an input coupled to the buffer output.
A transceiver, comprising:
- a transmitter;
- and
- an analog-to-digital converter (ADC) coupled to the transmitter, the ADC comprising a first stage and a second stage;
- the first stage including:
- a first sample-and-hold (SH) having an input coupled to a voltage input node of the ADC, and having a first SH output;
- a buffer having an input coupled to the first SH output, and having a buffer output;
- a first flash converter having an input coupled to the first SH output, and having a first flash converter output;
- and
- a first digital-to-analog converter (DAC) having an input coupled to the first flash converter output;
- and
- the second stage including a second flash converter having an input coupled to the buffer output.
An analog-to-digital converter (ADC), comprising:
- a first stage including:
- a buffer having an input configured to receive a sampled input voltage, and having a buffer output;
- a first flash converter having an input configured to receive the sampled input voltage, and having a first flash converter output;
- and
- a first digital-to-analog converter (DAC) having an input coupled to the first flash converter output;
- and
- a second stage including a second flash converter having an input coupled to the buffer output, the second flash converter configured to operate using a control signal derived from the first flash converter.
Dependencies are inferred from the claim text.