US 10,566,985 B2 · Method for analog-to-digital conversion of analog input signals

Abstract

A pipelined analog-to-digital converter has an analog signal input. A first input sample-and-hold circuit is connected to the analog signal input. An amplifier is connected to an output of the first input sample-and-hold circuit. A second input sample-and-hold circuit has an input connected to the analog signal input in parallel to the first input sample-and-hold circuit. An AD/DA conversion path is connected to an output of the second input sample-and-hold circuit. A first output sample-and-hold circuit has an input connected to an output of the amplifier. A second output sample-and-hold circuit has an input connected to the output of the amplifier. The amplifier, the first output sample-and-hold circuit, the second input sample-and-hold circuit, and the AD/DA conversion path are part of a converter stage and outputs of the converter stage are inputs to a following converter stage.

Claims10

Dependent claims

A method for analog-to-digital conversion of analog input signals into a digital data stream, comprising:

providing an analog input signal to a first input sample-and-hold circuit and to a parallel second input sample-and-hold circuit;
storing the analog input signal in the first input sample-and-hold circuit and in the parallel second input sample-and-hold circuit;
passing the analog input signal stored in the first input sample-and-hold circuit to an amplifier of a converter stage;
passing the analog input signal stored in the parallel second input sample-and-hold circuit to an AD/DA conversion path of the converter stage;
generating, within the AD/DA conversion path, high-order bits;
amplifying the analog input signal, by the amplifier, to create an amplified signal;
storing the amplified signal in a first output sample-and-hold circuit and in a parallel second output sample-and-hold circuit;
and
passing outputs of the first output sample-and-hold circuit, the parallel second output sample-and-hold circuit, and the AD/DA conversion path to a following converter stage.

6 more elements

A pipelined analog-to-digital converter, comprising:

an analog signal input;
a first input sample-and-hold circuit having an input connected to the analog signal input;
an amplifier, an input of the amplifier being connected to an output of the first input sample-and-hold circuit;
a second input sample-and-hold circuit having an input connected to the analog signal input in parallel to the first input sample-and-hold circuit;
an AD/DA conversion path having an input connected to an output of the second input sample-and-hold circuit;
a first output sample-and-hold circuit having an input connected to an output of the amplifier;
and
a second output sample-and-hold circuit having an input connected to the output of the amplifier,
wherein the amplifier, the first output sample-and-hold circuit, the second input sample-and-hold circuit, and the AD/DA conversion path are part of a converter stage and
wherein outputs of the converter stage are inputs to a following converter stage.

7 more elements

Dependencies are inferred from the claim text.

Method for analog-to-digital conversion of analog input signals

Life of this patent

Method for analog-to-digital conversion of analog input signals

Life of this patent

Abstract

Claims10