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1. (WO1999010931) ANALOG TRIMMING
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1999/010931    International Application No.:    PCT/EP1998/005262
Publication Date: 04.03.1999 International Filing Date: 19.08.1998
Chapter 2 Demand Filed:    24.03.1999    
H01L 27/08 (2006.01), H03K 17/687 (2006.01), H03K 17/693 (2006.01)
Applicants: TELEFONAKTIEBOLAGET LM ERICSSON [SE/SE]; S-126 25 Stockholm (SE)
Inventors: GOLDMAN, Richard; (GB).
FILLIPI, Raymond; (GB)
Agent: O'CONNELL, David, Christopher; Haseltine Lake & Co., Imperial House, 15-19 Kingsway, London WC2B 6UD (GB)
Priority Data:
9718146.5 27.08.1997 GB
Abstract: front page image
(EN)A trimming circuit includes a number of antifuses which can be blown to alter the parameters of an external circuit. In order to overcome the problem that further antifuses may inadvertently be blown after the desired trim has been determined, a protection circuit is provided. The protection circuit includes an additional antifuse which, when it is blown following determination of the desired trim, prevents other antifuses from being blown.
(FR)L'invention concerne un circuit d'ajustage qui comporte un certain nombre d'antifusibles que l'on peut faire sauter pour modifier les paramètres d'un circuit extérieur. Afin de résoudre le problème des antifusibles que l'on risque de faire sauter par inadvertance après que l'on a déterminé l'ajustage désiré, l'objet de l'invention est muni d'un circuit de protection. Le circuit de protection comprend un antifusible complémentaire qui saute une fois le réglage désiré déterminé, ce qui empêche les autres antifusibles de sauter.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, HR, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)