A method and apparatus is disclosed to compensate for impairments within a data converter such that its output is a more accurate representation of its input. The data converter includes a main data converter, a reference data converter, and a correction module. The main data converter may be characterized as having the impairments. As a result, the output of the main data converter is not the most accurate representation of its input. The reference data converter is designed such that the impairments are not present. The correction module estimates the impairments present within the main data converter using its output and the reference data converter to generate corrections coefficients. The correction module adjusts the output of the main data converter using the corrections coefficients to improve the performance of the data converter.

Claims

20 · 2 independent · depth 5

20 granted claims

›1.independentA composite analog-to-digital converter (ADC) for converting an analog input to a digital output, comprising:na main data converter configured to conv…+11

›2.↳ 1The composite ADC of claim 1, wherein the main data converter comprises:na first ADC from among a plurality of ADCs configured to convert the analog i…d2

›3.↳ 1The composite ADC of claim 1, wherein the reference data converter comprises:na reference ADC configured to convert the analog input to the reference …d2

›4.↳ 1The composite ADC of claim 1, further comprising:na reference re-timing module configured to replicate the first phase and the second phase to provide…d2+1

›6.↳ 1The composite ADC of claim 1, wherein the estimation module comprises:na first selection module configured to select one of the first corrected digita…d2+4

›7.↳ 6The composite ADC of claim 6, wherein the first main sample and the second main sample are characterized as including a plurality of samples, the seco…d3+3

›11.↳ 1The composite ADC of claim 1, wherein the compensation module comprises:na first adaptive equalizer module configured to adjust the first main sample …d2+1

›13.independentA method for converting an analog input to a digital output, comprising:nconverting an analog input to the first main digital sample according to a fi…+7

›14.↳ 13The method of claim 13, further comprising:nreplicating the first phase and the second phase to provide a first reference replica phase and a second r…d2+1

›16.↳ 13The method of claim 13, wherein the comparing comprises:nselecting one of the first corrected digital sample or the second corrected digital sample to…d2+4

›17.↳ 16The method of claim 16, wherein the first main sample and the second main sample are characterized as including a plurality of samples, andnwherein th…d3+3

Classifications

3 codes

IPC · International Patent Classification

Section H — Electricity

H03M1/06

USPC · US Patent Classification

341/118341/155

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Pendency

1.6 y

593 days filing → grant

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none on record

Responses

1 RCE

Examiner

Joseph Lauture

art unit 2819 · TC 2800

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Priority chain

2 priority documents

Priority

8 Sep 2010

earliest claimed

›Priority documents — 2

Type	Document	Date
provisional	US 61380801	8 Sep 2010
related publication	US 20120235841 A1	20 Sep 2012

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