Title:
METHOD AND ANALOG-TO-DIGITAL CONVERTER FOR CONVERTING AN ANALOG VOLTAGE INTO AN ARITHMETICAL VALUE
Document Type and Number:
WIPO Patent Application WO2001056166
Kind Code:
A3
Abstract:
According to the inventive method for converting an analog voltage (Vi) is applied to a sample and hold capacitor (CS) which is discharged in several steps by at least one discharge capacitor (C1, ... CN) until a predetermined reference voltage (VREF4) is reached. The arithmetical value, preferably the digital value, of the analog voltage (Vi) is calculated from the number of discharge steps, which is exponentially related to the analog voltage (Vi), by means of an exponential function. An analog-to-digital converter for carrying out this method is characterized by a simple construction and low power loss.
Inventors:
EICHFELD HERBERT (DE)
SAUERBREY JENS (DE)
SAUERBREY JENS (DE)
Application Number:
PCT/DE2001/000036
Publication Date:
March 14, 2002
Filing Date:
January 08, 2001
Export Citation:
Assignee:
INFINEON TECHNOLOGIES AG (DE)
EICHFELD HERBERT (DE)
SAUERBREY JENS (DE)
EICHFELD HERBERT (DE)
SAUERBREY JENS (DE)
International Classes:
H03M1/58; (IPC1-7): H03M1/54
Foreign References:
| US3439272A | 1969-04-15 | |||
| GB1271856A | 1972-04-26 | |||
| GB1500830A | 1978-02-15 | |||
| EP0945987A2 | 1999-09-29 | |||
| US3414807A | 1968-12-03 |
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