EP0806719B1 - Schaltungsanordnung zur Erzeugung eines Referenz-potentials - Google Patents
Schaltungsanordnung zur Erzeugung eines Referenz-potentials Download PDFInfo
- Publication number
- EP0806719B1 EP0806719B1 EP97106833A EP97106833A EP0806719B1 EP 0806719 B1 EP0806719 B1 EP 0806719B1 EP 97106833 A EP97106833 A EP 97106833A EP 97106833 A EP97106833 A EP 97106833A EP 0806719 B1 EP0806719 B1 EP 0806719B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transistor
- collector
- resistor
- base
- whose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010079 rubber tapping Methods 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
- G05F3/02—Regulating voltage or current
- G05F3/08—Regulating voltage or current wherein the variable is DC
- G05F3/10—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics
- G05F3/16—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices
- G05F3/20—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
- G05F3/26—Current mirrors
- G05F3/265—Current mirrors using bipolar transistors only
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
- G05F3/02—Regulating voltage or current
- G05F3/08—Regulating voltage or current wherein the variable is DC
- G05F3/10—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics
- G05F3/16—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices
- G05F3/20—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
- G05F3/30—Regulators using the difference between the base-emitter voltages of two bipolar transistors operating at different current densities
Definitions
- the invention relates to a circuit arrangement for generation a reference potential with a first transistor, the Emitter is connected to a reference potential and its Base and collector are interconnected with one another second transistor, the base of which is connected to the base of the first Transistor is connected to a first resistor, the between the collector of the first transistor and an output terminal switched to tap the reference potential is, with a second resistor that is between the collector of the second transistor and the output terminal is, with a third resistor connected between the emitter of the second transistor and the reference potential is, with a third transistor, the base of which is connected to the collector of the second transistor and its emitter with the reference potential connected and with a controlled power source, that between a supply potential and the output terminal is switched and the input side with the Collector of the third transistor is coupled.
- bandgap reference Such a circuit arrangement, also referred to as a bandgap reference is described in EP-A-0 411 657.
- a another bandgap reference is from Paul R. Gray, Robert G. Meyer, Analysis and Design of Analog Integrated Circuits, Second Edition, John Wiley and Sons, 1984, pp. 293-296.
- a bandgap reference is often used with integrated circuits used as internal reference voltage source.
- a frequency-compensated bandgap reference is also in GB 2 256 949 A.
- the object of the invention is to provide a circuit arrangement Specify the type mentioned, despite good noise behavior has short on and off times.
- the controlled current source has a circuit arrangement fourth transistor whose collector has the supply potential, its emitter with the output terminal and its Base connected to the collector of the third transistor is. Is between the base and collector of the fourth transistor switched another power source.
- the further current source can have a fifth transistor have its base with the output terminal and its emitter with the interposition of a fourth resistor is connected to the reference potential. Furthermore are a sixth transistor whose emitter is interposed a fifth resistor with the supply potential is connected, the collector of which is connected to the base of the fourth transistor is connected and its base with the Collector of the fifth transistor is coupled, as well as a seventh transistor, its base and collector together and coupled to the collector of the fifth transistor are and its emitter with the interposition of a sixth Resistance is connected to the supply potential, intended.
- the noise of the circuit arrangement according to the invention is further reduced.
- the noise of the others Current source has an influence especially at high frequencies on the noise behavior of the entire circuit arrangement. This is particularly annoying when the other Current source pnp transistors are used because of this the noise and the size of the parasitic capacitances are far from an ideal transistor.
- the inserted eighth resistor insulates especially at high Frequencies the not ideal working other power source and thus improves the noise behavior and the output resistance.
- the stability is improved because the effective capacity at the output of the further power source now not so much the phase reserve of the whole Circuit arrangement affects.
- the insertion of a series resistor is particularly recommended when realizing sixth and seventh transistor as pnp transistors on one Current output of the circuit arrangement.
- an npn transistor T1 is provided, whose emitter is connected to a reference potential M and whose base and collector are both interconnected as also via a common resistor R1 with a reference potential leading output terminal U are coupled.
- the base and collector of transistor T1 is the base of one npn transistor T2 connected, the emitter via a Resistor R3 with the reference potential M and its collector coupled to the output terminal U via a resistor R2 is.
- the emitter is also a npn transistor T4 connected, the collector with a supply potential V is connected.
- the basis of the Transistor T4 is connected to the collector of an NPN transistor T3 connected, whose emitter to the reference potential M and Base is connected to the collector of transistor T2.
- a capacitor C1 is connected in parallel with the resistor R2.
- the base of the transistor T4 is also a Resistor R8 and a current source circuit to the supply potential V connected.
- the current source circuit has a pnp transistor T6, its emitter via a resistor R5 with the supply potential V and its collector via resistor R8 the base of the transistor T4 or the collector of the transistor T3 is connected.
- the base of transistor T6 is connected to the base and collector of a pnp transistor T7, whose emitter via a resistor R6 with the supply potential V is coupled.
- Base and collector of the transistor T7 and the base of transistor T6 are above it also connected to the collector of an npn transistor T5, its emitter via a resistor R4 to the reference potential M is connected and its base with the output connection U is connected.
- an output connection I which carries a reference current. Is to the output terminal I with the collector of a pnp transistor T8 connected, the emitter via a resistor R7 is connected to the supply potential V and its base is connected to the bases of transistors T6 and T7.
- the dimensioning of the capacitor C1 depends on the respective application from, although here with higher capacities Noise behavior and, at lower capacities, the switch-on behavior becomes cheaper.
- the resistor R8 becomes like this chosen as large as possible to ensure the highest possible insulation guarantee.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
- Amplifiers (AREA)
Description
Claims (2)
- Schaltungsanordnung zur Erzeugung eines Referenzpotentialsdadurch gekennzeichnet, daßmit einem ersten Transistor (T1), dessen Emitter mit einem Bezugspotential (M) verbunden ist und dessen Basis und Kollektor miteinander verschaltet sind,mit einem zweiten Transistor (T2), dessen Basis mit der Basis des ersten Transistors (T1) verbunden ist,mit einem ersten Widerstand (R1), der zwischen den Kollektor des ersten Transistors (T1) und einem Ausgangsanschluß (U) zum Abgreifen des Referenzpotentials geschaltet ist,mit einem zweiten Widerstand (R2), der zwischen den Kollektor des zweiten Transistors (T2) und den Ausgangsanschluß (U) geschaltet ist,mit einem dritten Widerstand (R3), der zwischen den Emitter des zweiten Transistors (T2) und das Bezugspotential (M) geschaltet ist,mit einem dritten Transistor (T3), dessen Basis mit dem Kollektor des zweiten Transistors (T2) und dessen Emitter mit dem Bezugspotential (M) verbunden ist, und mit einer gesteuerten Stromquelle (T4), die zwischen ein Versorgungspotential (V) und den Ausgangsanschluß (U) geschaltet ist und die eingangsseitig mit dem Kollektor des dritten Transistors (T3) gekoppelt ist,eine Kapazität (C1) vorgesehen ist, die dem zweiten Widerstand (R2) parallel geschaltet ist,die gesteuerte Stromquelle (T3, T4) einen vierten Transistor (T4) aufweist, dessen Kollektor mit dem Versorgungspotential (V), dessen Emitter mit dem Ausgangsanschluß (U) und dessen Basis mit dem Kollektor des dritten Transistors (T3) verbunden ist,zwischen Basis und Kollektor des vierten Transistors (T4) eine weitere Stromquelle (T5, T6, T7, R4, R5, R6) geschaltet ist unddie weitere Stromquelle (T5, T6, T7, R4, R5, R6) aufweist:einen fünften Transistor (T5), dessen Basis mit dem Ausgangsanschluß (U) und dessen Emitter unter Zwischenschaltung eines vierten Widerstandes (R4) mit dem Bezugspotential (M) verbunden ist,einen sechsten Transistor (T6), dessen Emitter (T6) unter Zwischenschaltung eines fünften Widerstandes (R5) mit dem Versorgungspotential (V) verbunden ist, dessen Kollektor mit der Basis des vierten Transistors (T4) verschaltet ist unddessen Basis mit dem Kollektor des fünften Transistors (T5) gekoppelt ist,einen siebten Transistor (T7), dessen Basis und Kollektor miteinander sowie mit dem Kollektor des fünften Transistors (T5) gekoppelt sind und dessen Emitter unter Zwischenschaltung eines sechsten Widerstandes (R6) mit dem Versorgungspotential (V) verbunden ist.
- Schaltungsanordnung nach Anspruch 1,
dadurch gekennzeichnet, daß in Reihe zur weiteren Stromquelle (T6, T7) ein achter Widerstand (R8) geschaltet ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19618914A DE19618914C1 (de) | 1996-05-10 | 1996-05-10 | Schaltungsanordnung zur Erzeugung eines Referenzpotentials |
| DE19618914 | 1996-05-10 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0806719A2 EP0806719A2 (de) | 1997-11-12 |
| EP0806719A3 EP0806719A3 (de) | 1998-09-16 |
| EP0806719B1 true EP0806719B1 (de) | 2001-08-01 |
Family
ID=7793979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97106833A Expired - Lifetime EP0806719B1 (de) | 1996-05-10 | 1997-04-24 | Schaltungsanordnung zur Erzeugung eines Referenz-potentials |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5883543A (de) |
| EP (1) | EP0806719B1 (de) |
| DE (2) | DE19618914C1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002008708A1 (en) * | 2000-07-26 | 2002-01-31 | Stmicroelectronics Asia Pacifc Pte Ltd | A thermal sensor circuit |
| DE10357772A1 (de) * | 2003-12-10 | 2005-07-14 | Siemens Ag | Steuereinheit und Steuervorrichtung mit der Steuereinheit |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4553083A (en) * | 1983-12-01 | 1985-11-12 | Advanced Micro Devices, Inc. | Bandgap reference voltage generator with VCC compensation |
| JPS60229125A (ja) * | 1984-04-26 | 1985-11-14 | Toshiba Corp | 電圧出力回路 |
| US5028527A (en) * | 1988-02-22 | 1991-07-02 | Applied Bio Technology | Monoclonal antibodies against activated ras proteins with amino acid mutations at position 13 of the protein |
| JPH0680486B2 (ja) * | 1989-08-03 | 1994-10-12 | 株式会社東芝 | 定電圧回路 |
| US5029295A (en) * | 1990-07-02 | 1991-07-02 | Motorola, Inc. | Bandgap voltage reference using a power supply independent current source |
| KR930001577A (ko) * | 1991-06-19 | 1993-01-16 | 김광호 | 기준전압 발생회로 |
| JP2953226B2 (ja) * | 1992-12-11 | 1999-09-27 | 株式会社デンソー | 基準電圧発生回路 |
| US5757224A (en) * | 1996-04-26 | 1998-05-26 | Caterpillar Inc. | Current mirror correction circuitry |
-
1996
- 1996-05-10 DE DE19618914A patent/DE19618914C1/de not_active Expired - Fee Related
-
1997
- 1997-04-24 EP EP97106833A patent/EP0806719B1/de not_active Expired - Lifetime
- 1997-04-24 DE DE59704169T patent/DE59704169D1/de not_active Expired - Lifetime
- 1997-05-12 US US08/855,842 patent/US5883543A/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| BIRRITTELLA M S ET AL: "DESIGN TECHNIQUES FOR IC VOLTAGE REGULATORS WITHOUT P-N-P TRANSISTORS" IEEE JOURNAL OF SOLID-STATE CIRCUITS, NEW YORK, NY, US, Bd. 22, Nr. 1, Februar 1987. * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0806719A2 (de) | 1997-11-12 |
| DE59704169D1 (de) | 2001-09-06 |
| US5883543A (en) | 1999-03-16 |
| EP0806719A3 (de) | 1998-09-16 |
| DE19618914C1 (de) | 1997-08-14 |
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