EP 0766163 B1 19990421 - Circuit for generating a bias voltage
Title (en)
Circuit for generating a bias voltage
Title (de)
Schaltungsanordnung zur Erzeugung eines Biaspotentials
Title (fr)
Circuit pour générer une tension de polarisation
Publication
Application
Priority
DE 19535807 A 19950926
Abstract (en)
[origin: DE19535807C1] The circuit includes a first transistor (2) with its collector connected to a supply potential (1). A first resistor (3) is connected between the base and the collector of the transistor (2). A first current source (5) is connected between the base of the first transistor (2) and a reference potential (4). A second current source (6) is connected between the emitter of the first transistor (2) and the reference potential (4). A second transistor (7) has its base connected to the supply potential (1). Its base is connected to the emitter of the first transistor (2). A third current source (8) is connected between the emitter of the second transistor (7) and the reference potential (4). A third transistor (9) conducts the bias potential at its collector. A second resistor (10) is connected between the emitter of the second transistor (7) and the base of the third transistor (9). A third resistor (11) is connected between the collector of the third transistor (9) and the supply potential (1). A first forward biased diode (12) is connected between the base of the third transistor (9) and the reference potential (4). A fourth resistor (13) is connected between the emitter of the third transistor (9) and the reference potential (4). The fourth resistor (13) has a resistance half of that of the second or third resistors (10,11), which are the same size as each other. The second and third current sources supply a current dependent on the collector current of the third transistor (9).
IPC 1-7
IPC 8 full level
CPC (source: EP US)
G05F 3/205 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 19535807 C1 19961024; DE 59601698 D1 19990527; EP 0766163 A2 19970402; EP 0766163 A3 19980401; EP 0766163 B1 19990421; US 5656927 A 19970812
DOCDB simple family (application)
DE 19535807 A 19950926; DE 59601698 T 19960904; EP 96114180 A 19960904; US 72156296 A 19960926