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Title:
CALIBRATION OF A CHARGE-TO-DIGITAL TIMER
Document Type and Number:
WIPO Patent Application WO/2013/098357
Kind Code:
A3
Abstract:
A calibration method disclosed herein calibrates at least one of a capacitive load and a charging current controlling a charge-to-digital timer (CDT). In general, the disclosed calibration method measures multiple calibration phases based on start and stop signals separated by a known time difference, and therefore having a known phase, and adjusts at least one of the capacitive load and the charging current of the CDT based on the measured calibration phases. In so doing, the disclosed calibration method reduces power dissipation and peak supply currents over the frequency range of the CDT.

Inventors:
HELIOE PETRI (FI)
KORPI PETRI (FI)
VAEAENAENEN PAAVO (FI)
Application Number:
PCT/EP2012/076994
Publication Date:
August 22, 2013
Filing Date:
December 27, 2012
Export Citation:
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Assignee:
ST ERICSSON SA (CH)
International Classes:
G04F10/00
Foreign References:
EP2388923A12011-11-23
DE3834938C11989-12-07
US20100244971A12010-09-30
Attorney, Agent or Firm:
STRÖM & GULLIKSSON AB (Lund, SE)
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