Title:
TEMPERATURE COMPENSATION IN ELECTRONIC DEVICES
Document Type and Number:
WIPO Patent Application WO1999016172
Kind Code:
A3
Abstract:
The invention relates to a method for temperature compensation in an electric circuit. In order to get rid of costly manufacturing processes and external components, a PTAT resistor is replaced by a series connection of two resistive elements (Rx, 31), the first of said elements (Rx) having essentially constant resistance regardless of the temperature, and the second element (31) having a resistance which is non-linearly dependent on the temperature. The resistance value of the first element is selected so that an approximation of the resistance of said series connection is directly proportional to the temperature.
Inventors:
SPIEGEL EGBERT (DE)
Application Number:
PCT/FI1998/000736
Publication Date:
May 14, 1999
Filing Date:
September 18, 1998
Export Citation:
Assignee:
NOKIA TELECOMMUNICATIONS OY (FI)
SPIEGEL EGBERT (DE)
SPIEGEL EGBERT (DE)
International Classes:
G05F3/24; H03F1/30; G06G7/24; H03L1/02; (IPC1-7): H03L1/02; H03F1/30
Foreign References:
| US4717836A | 1988-01-05 |
Other References:
PATENT ABSTRACTS OF JAPAN, Vol. 10, No. 306, (E-446); & JP 61118026 A (HITACHI LTD) 5 June 1986.
PATENT ABSTRACTS OF JAPAN, Vol. 9, No. 325, (E-368); & JP 60158717 A (SEIKO DENSHI KOGYO K.K.) 20 August 1985.
PATENT ABSTRACTS OF JAPAN, Vol. 17, No. 115, (E-1330); & JP 4296113 A (SANYO ELECTRIC CO LTD) 20 October 1992.
PATENT ABSTRACTS OF JAPAN, Vol. 9, No. 325, (E-368); & JP 60158717 A (SEIKO DENSHI KOGYO K.K.) 20 August 1985.
PATENT ABSTRACTS OF JAPAN, Vol. 17, No. 115, (E-1330); & JP 4296113 A (SANYO ELECTRIC CO LTD) 20 October 1992.
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