SE0200435L - Comparator offset calibration for A / D converters - Google Patents

Comparator offset calibration for A / D converters

Info

Publication number
SE0200435L
SE0200435L SE0200435A SE0200435A SE0200435L SE 0200435 L SE0200435 L SE 0200435L SE 0200435 A SE0200435 A SE 0200435A SE 0200435 A SE0200435 A SE 0200435A SE 0200435 L SE0200435 L SE 0200435L
Authority
SE
Sweden
Prior art keywords
comparator
complex
digital
adjust
signal
Prior art date
Application number
SE0200435A
Other languages
Swedish (sv)
Other versions
SE520316C2 (en
SE0200435D0 (en
Inventor
Bengt Erik Jonsson
Christer Alf Jansson
Original Assignee
Ericsson Telefon Ab L M
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE0200435A priority Critical patent/SE0200435L/en
Publication of SE0200435D0 publication Critical patent/SE0200435D0/en
Priority to TW091106646A priority patent/TWI270255B/en
Publication of SE520316C2 publication Critical patent/SE520316C2/en
Publication of SE0200435L publication Critical patent/SE0200435L/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/10—Calibration or testing
    • H03M1/1009—Calibration
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters

Abstract

The system is for comparator offset calibration for an analogue/digital converter and involves components (CCU,SW1-SW7) which for each comparator in a comparator complex make available a common reference signal to both comparator in-terminals. The components constrain each comparator in the complex to the same predetermined logical output state. The components can also adjust the comparator trigger points for each comparator in the complex until the logical output state is inverted. They adjust each comparator trigger point with a monotonously varying signal. At the same time, they can adjust all comparators in the complex with a common ramp signal. The system also has a calibrating digital/analogue converter (DAC1-DAC7) for conversion of a digital ramp signal for each comparator in the complex to an analogue signal for trigger point adjustment. Registers (REG1-REG7) store for each comparator an offset calibrating coefficient (CAL1-CAL7) which represent the digital ramp signal value which inverts the logical output stage.
SE0200435A 2002-02-13 2002-02-13 Comparator offset calibration for A / D converters SE0200435L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE0200435A SE0200435L (en) 2002-02-13 2002-02-13 Comparator offset calibration for A / D converters
TW091106646A TWI270255B (en) 2002-02-13 2002-04-02 Comparator offset calibration for A/D converters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0200435A SE0200435L (en) 2002-02-13 2002-02-13 Comparator offset calibration for A / D converters

Publications (3)

Publication Number Publication Date
SE0200435D0 SE0200435D0 (en) 2002-02-13
SE520316C2 SE520316C2 (en) 2003-06-24
SE0200435L true SE0200435L (en) 2003-06-24

Family

ID=20286963

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0200435A SE0200435L (en) 2002-02-13 2002-02-13 Comparator offset calibration for A / D converters

Country Status (2)

Country Link
SE (1) SE0200435L (en)
TW (1) TWI270255B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8941518B2 (en) * 2012-02-14 2015-01-27 Hittite Microwave Corporation Methods and apparatus for calibrating pipeline analog-to-digital converters having multiple channels

Also Published As

Publication number Publication date
SE520316C2 (en) 2003-06-24
SE0200435D0 (en) 2002-02-13
TWI270255B (en) 2007-01-01

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