EP 1128313 A1 20010829 - Logarithmic amplifier
Title (en)
Logarithmic amplifier
Title (de)
Logarithmischer Verstärker
Title (fr)
Amplificateur logarithmique
Publication
Application
Priority
EP 00850034 A 20000225
Abstract (en)
The invention relates to a logarithmic amplifier for reading an input current (Iin) or input voltage (Uin) and for giving out an output voltage (Uout), said logarithmic amplifier including a transistor (T1) or diode for generating logarithmic amplification, said transistor (T1) or diode including an inner serial resistance. According to the invention a compensation voltage (UC) is arranged to be subtracted from the output voltage (Uout) to compensate for voltage drop over the inner serial resistance. <IMAGE>
IPC 1-7
IPC 8 full level
G06G 7/24 (2006.01)
CPC (source: EP)
G06G 7/24 (2013.01)
Citation (search report)
- [X] US 4891603 A 19900102 - ODA MINORU [JP]
- [A] US 4232233 A 19801104 - CLOUSER DAVID E, et al
- [A] PATENT ABSTRACTS OF JAPAN vol. 015, no. 405 (E - 1122) 16 October 1991 (1991-10-16)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 00850034 A 20000225