EP 0613072 A1 19940831 - Integrated circuit comprising a cascode current mirror.
Title (en)
Integrated circuit comprising a cascode current mirror.
Title (de)
Integrierte Schaltung mit einem Kaskadestromspiegel.
Title (fr)
Circuit intégré comportant un miroir de courant en cascade.
Publication
Application
Priority
- EP 94200227 A 19940207
- EP 93200380 A 19930212
Abstract (en)
An integrated circuit comprising a cascode current mirror and a bias stage for biassing the cascode current mirror, the cascode current mirror comprising, between an input terminal (11) and a supply voltage terminal (14), a first cascoded MOS transistor (21) and a first cascode MOS transistor (22) and, between an output terminal (12) and the supply voltage terminal (14), a second cascoded MOS transistor (23) and a second cascode MOS transistor (24). In order to obtain a minimal voltage between the output terminal (12) and the supply voltage terminal (14) the bias stage comprises a first bias current source (31) for generating a first bias current, a second bias current source (32) for generating a second bias current, a first bias MOS transistor (41) having a gate coupled to the gates of the two cascoded MOS transistors (21, 23), a source, and a drain coupled to the first supply voltage terminal (13) via the first bias current source (31), a second bias MOS transistor (42) having a gate coupled to the gates of the two cascode MOS transistors (22, 24), a source coupled to the source of the first bias MOS transistor (41), and a drain coupled to the first supply voltage terminal (13) via the second bias current source (32), and a third bias MOS transistor (43) coupled between the sources of the two bias MOS transistors (41,42) and the second supply voltage terminal (14). <IMAGE>
IPC 1-7
IPC 8 full level
G05F 3/26 (2006.01)
CPC (source: EP)
G05F 3/262 (2013.01)
Citation (search report)
- [A] US 4477782 A 19841016 - SWANSON ERIC J [US]
- [A] EP 0403195 A1 19901219 - INMOS LTD [GB]
- [A] US 4471292 A 19840911 - SCHENCK STEPHEN R [US], et al
- [A] EP 0226721 A1 19870701 - SIEMENS AG [DE]
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DOCDB simple family (application)
EP 94200227 A 19940207