Integrated digital calibration circuit and digital to analog converter (DAC)

A technology for digital-to-analog converters and calibration circuits, applied in the direction of digital-to-analog converters, analog/digital conversion calibration/testing, etc., can solve problems such as high cost, high complexity and cost, and expensive manufacturing technology
CN1703831AInactive Publication Date: 2005-11-30ANALOG DEVICES INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANALOG DEVICES INC
Publication Date
2005-11-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

An integrated digital calibration circuit and digital to analog converter includes a digital to analog converter (DAC) and a digital calibration circuit including a memory for storing predetermined end point coefficients of the digital to analog converter transfer function; and an arithmetic logic unit for applying the end point coefficients to the DAC input signal to adjust the end points of the DAC and / or analog signal chain.
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Description

technical field

[0001] The present invention relates to an integrated digital calibration circuit and digital-to-analog converter (DAC) for adjusting, modifying, adjusting or correcting the endpoints of a DAC transfer function.

[0002] related application

[0003] This application claims U.S. Provisional Application Serial No. 60 / 413,909 filed by Dempsey et al., entitled "DIGITAL-TO-ANALOG CONVERTER SYSTEMCALIBRATION," filed November 4, 2002 (AD-332J), and Serial No. 60,414,166, the applicant is Dempsey et al., entitled "DIGITAL-TO-ANALOG CONVERTER CALIBRATIONARCHITECTURE & SCHEME", the priority of the US provisional application filed on September 27, 2002. Background technique

[0004] In most cases, it is necessary to adjust and control the DAC endpoints, such as zero scale (zeroscale), full scale (full scale) or gain and offset. One of the more important applications is endpoint error correction. That is, corrections for zero-scale and full-scale errors and gain and o...

Claims

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