EP0936526A2 - Referenzspannungsgenerator - Google Patents
Referenzspannungsgenerator Download PDFInfo
- Publication number
- EP0936526A2 EP0936526A2 EP99100181A EP99100181A EP0936526A2 EP 0936526 A2 EP0936526 A2 EP 0936526A2 EP 99100181 A EP99100181 A EP 99100181A EP 99100181 A EP99100181 A EP 99100181A EP 0936526 A2 EP0936526 A2 EP 0936526A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- reference voltage
- voltage generator
- inverter
- signal
- input terminal
- 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.)
- Withdrawn
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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
- G05F3/24—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the field-effect type only
- G05F3/242—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the field-effect type only with compensation for device parameters, e.g. channel width modulation, threshold voltage, processing, or external variations, e.g. temperature, loading, supply voltage
Definitions
- the present invention relates to a reference voltage generator according to the preamble of claim 1, i.e. a reference voltage generator with an inverter, wherein the input terminal of the inverter and the output terminal of the inverter are interconnected.
- a reference voltage generator of this type is, for example known from DE 42 15 444 C2.
- the reference voltage generator described in this document is part of a circuit for implementing a first voltage level (for example the voltage level of output signals from an ECL circuit) into a second Voltage level (for example, that of a CMOS circuit expected or required voltage level).
- the reference voltage generator it is up to a reference voltage for the actual level converter.
- the reference voltage generator is part of an integrated circuit, in the simplest case it has, more precisely, the inverter forming it, the structure shown in FIG. 2. That is, it consists of a PMOS transistor T1 and an NMOS transistor T2, which are connected as shown in FIG.
- the output connection of the inverter implemented in this way lies between the two transistors T1 and T2 and is designated by A in FIG. 2; the input connection coincides with the gate connections of the transistors T1 and T2 and is designated E in FIG.
- the reference voltage generated by this arrangement is the voltage which can be tapped at the output terminal A of the inverter (and which is fed back to the input terminal E); if the inverter is symmetrical, it is half the supply voltage V DD applied to it .
- the reference voltage generator When the connection between the reference voltage generator is disconnected and the unit that requires the reference voltage the operation of the reference voltage generator requires less electrical energy than it is when the connection is closed Case is. However, the reference voltage generator needs even if the connection between this and the is broken Unit that requires reference voltage is a non-negligible Energy.
- the present invention is therefore based on the object the reference voltage generator according to the preamble of the claim 1 in such a way that this with little Effort and easily in an (energy-saving) Operating mode is shiftable, in which its energy consumption is reduced to a minimum.
- the reference voltage generator is with an operating mode setting device provided that designed is the connection between the input port and the Interrupt the output connection of the inverter.
- the reference voltage generator can therefore by a simple switching process be put into an energy-saving mode.
- the inverter With appropriate selection of this signal (the size and / or of the time course of the same), the inverter can be converted into one Be put in a state in which he has minimal energy consumption having. Because about the connections made by the switching process is created or separated, only very small currents can flow, which are actuated during the switching process Switch designed for low loads and consequently be very simple.
- the reference voltage generator is also in the energy-saving mode remain connected to the supply voltage can, switching from normal mode to Energy saving mode and vice versa without special provision Measures very quickly and without swinging in and / or swinging out respectively.
- the reference voltage generator according to the invention can therefore be with minimal effort in a simple way in an energy-saving mode offset.
- the reference voltage generator described in more detail below is for example as a reference voltage source for a level converter applicable. However, there is no restriction to this; the described reference voltage generator can also work for various other purposes.
- the reference voltage generator is in the example under consideration Part of an integrated circuit. Insists on this too however no restriction; the reference voltage generator can also be wholly or partly through discrete components be realized.
- the reference voltage generator essentially consists of an inverter, its input terminal and its output terminal are interconnected.
- the connection of the input port and output connection of the inverter causes Feedback of the signal output at the output connection the input connector, which is the output connector tapped (reference) voltage with a symmetrical structure of the Inverters to half the supply voltage of the inverters sets.
- the reference voltage generator considered here the connection between the input connector and the output terminal of the inverter. This enables one to connect to the input terminal of the inverter to create any signal other than its output signal whereby it - with appropriate determination of the at the input connection applied voltage - put into a state in which it has minimal energy consumption.
- the reference voltage generator consists of PMOS transistors T1, T3 and T6 and NMOS transistors T2, T4, T5 and T7 which are connected as shown in FIG. 1.
- the actual inverter is through the transistors T1 and T2 formed.
- the output terminal of the inverter is between transistors T1 and T2 and is designated A; the input terminal of the inverter coincides with the gate terminals of the transistors T1 and T2 together and is connected to E designated.
- the novel reference voltage generator shown in FIG. 1 additionally includes one through the transistors T3 to T7 operating mode setting device, through which it can be put into an energy-saving mode in which it has minimal energy consumption.
- the operating mode setting device is designed to Reference voltage generator in response to a corresponding one Request in the standby or standby mode switch, the requirement being considered Example is that to the standby connection SB a signal signaling the standby request is created becomes; is the signal signaling the standby request in the present case a signal with a high level.
- the transistors T3 conduct, T4 and T6, and turn off transistors T5 and T7.
- the blocking state of transistor T5 also causes or alternatively to the feedback output signal of the Inverters no other signal applied to the input terminal becomes.
- the novel reference voltage generator behaves like a signal 1 exactly like the conventional reference voltage generator according to FIG. 2.
- the blocking state of transistors T3 and T4 causes the switching element realized thereby is open.
- the connection between the input port and the output port of the inverter (the feedback branch) is interrupted and that output from the output terminal of the inverter Signal is no longer fed back to the input connection.
- the potentials of the first pole and the second pole of the supply voltage are potentials whose application to the input connection of the inverter cause its energy consumption becomes minimal.
- a reduction in energy consumption can also occur when a potential is applied to the input terminal E, that differs from the potentials of the poles of the supply voltage differs.
- the decisive factor in this context is "only" that the potential applied to the input terminal E at least puts one of the transistors T1 and T2 into a state, in which he blocks or at least a high one Volume resistance has or - more generally expressed - That the potential applied to the input terminal E the Inverters (any part of the same) into one state in which a current flows through it is completely or partially prevented.
- the states in which the flow of a cross flow is completely or partially prevented are the preferred states, their setting when moving of the reference voltage generator in standby mode or - more generally - an energy-saving mode is sought.
- That provided in the feedback branch is used Switching element by two to a so-called transmission gate interconnected transistors formed. Although this has proven to be advantageous in CMOS technology no limitation to this.
- the switching element can also can be realized practically any other way.
- the switching element control logic can also be different than through the Transistors T6 and T7 can be realized.
- the described reference voltage generator can be used independently from the details of practical implementation the same can be achieved that this with little effort and easily put into an energy-saving mode is in which its energy consumption to a minimum is reduced.
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- 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)
- Logic Circuits (AREA)
- Control Of Electrical Variables (AREA)
- Dc-Dc Converters (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
Description
- Figur 1
- den Aufbau eines Ausführungsbeispiels des erfindungsgemäßen Referenzspannungsgenerators, und
- Figur 2
- den Aufbau eines herkömmlichen Referenzspannungsgenerators.
- bilden die Transistoren T3 und T4 ein im Rückkopplungszweig des Inverters liegendes Schaltelement,
- bildet der Transistor T5 ein Schaltelement über welches an den Eingangsanschluß des Inverters ein anderes Signal als dessen Ausgangssignal anlegbar ist, und
- bilden die Transistoren T6 und T7 eine Schaltglied-Ansteuerlogik, durch welche die Transistoren T3, T4 und T5 in Abhängigkeit von einem an einen Standby-Anschluß SB anliegenden Signal angesteuert werden.
Claims (7)
- Referenzspannungsgenerator mit einem Inverter (T1, T2), wobei der Eingangsanschluß (E) des Inverters und der Ausgangsanschluß (A) des Inverters miteinander verbunden sind, gekennzeichnet durch
eine Betriebsart-Einstelleinrichtung (T3 - T7), die dazu ausgelegt ist, die Verbindung zwischen dem Eingangsanschluß und dem Ausgangsanschluß des Inverters zu unterbrechen. - Referenzspannungsgenerator nach Anspruch 1,
dadurch gekennzeichnet,
daß die Betriebsart-Einstelleinrichtung (T3 - T7) dazu ausgelegt ist, an den Eingangsanschluß (E) des Inverters (T1, T2) ein anderes Signal als dessen Ausgangssignal anzulegen. - Referenzspannungsgenerator nach Anspruch 2,
dadurch gekennzeichnet,
daß das andere Signal ein Signal ist, durch welches der Inverter (T1, T2) in einen Zustand versetzt wird, in welchem das Fließen eines Stromes durch diesen ganz oder teilweise unterbunden ist. - Referenzspannungsgenerator nach Anspruch 2 oder 3,
dadurch gekennzeichnet,
daß das andere Signal das Potential eines der Pole der Versorgungsspannung aufweist. - Referenzspannungsgenerator nach einem der Ansprüche 2 bis 4,
dadurch gekennzeichnet,
daß die Betriebsart-Einstelleinrichtung (T3 bis T7) dazu ausgelegt ist, in Abhängigkeit von einem von außen zugeführten Signal zu arbeiten. - Referenzspannungsgenerator nach Anspruch 5,
dadurch gekennzeichnet,
daß die Betriebsart-Einstelleinrichtung (T3 - T7) dazu ausgelegt ist, die Verbindung zwischen dem Eingangsanschluß (E) und dem Ausgangsanschluß (A) des Inverters (T1, T2) zu unterbrechen und an den Eingangsanschluß des Inverters ein anderes Signal als dessen Ausgangssignal anzulegen, wenn und so lange ihr durch das von außen zugeführte Signal signalisiert wird, daß der Referenzspannungsgenerator in einer Energiespar-Betriebsart betrieben werden soll. - Referenzspannungsgenerator nach Anspruch 5 oder 6,
dadurch gekennzeichnet,
daß die Betriebsart-Einstelleinrichtung (T3 bis T7) dazu ausgelegt ist, die Verbindung zwischen dem Eingangsanschluß (E) und dem Ausgangsanschluß (A) des Inverters (T1, T2) geschlossen zu halten und an den Eingangsanschluß des Inverters kein anderes Signal als dessen Ausgangssignal anzulegen, wenn und so lange ihr durch das von außen zugeführte Signal signalisiert wird, daß der Referenzspannungsgenerator in der Normal-Betriebsart betrieben werden soll.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1998101994 DE19801994C1 (de) | 1998-01-20 | 1998-01-20 | Referenzspannungsgenerator |
| DE19801994 | 1998-01-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0936526A2 true EP0936526A2 (de) | 1999-08-18 |
| EP0936526A3 EP0936526A3 (de) | 2001-10-17 |
Family
ID=7855152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99100181A Withdrawn EP0936526A3 (de) | 1998-01-20 | 1999-01-07 | Referenzspannungsgenerator |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0936526A3 (de) |
| DE (1) | DE19801994C1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412509A (zh) * | 2013-08-29 | 2013-11-27 | 灿芯半导体(上海)有限公司 | 低功耗自断电电路及其电平转换电路 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2840740C2 (de) * | 1978-09-19 | 1983-01-05 | Siemens AG, 1000 Berlin und 8000 München | MOS-integrierte Konstantstromquelle |
| JPS61196614A (ja) * | 1985-02-26 | 1986-08-30 | Mitsubishi Electric Corp | チヨツパ型比較器 |
| LU86787A1 (de) * | 1986-06-19 | 1987-07-24 | Siemens Ag | Breitbandsignal-koppeleinrichtung |
| JPH01138813A (ja) * | 1987-11-26 | 1989-05-31 | Toshiba Corp | Ecl―cmosレベル変換回路 |
| US4998028A (en) * | 1990-01-26 | 1991-03-05 | International Business Machines Corp. | High speed CMOS logic device for providing ECL compatible logic levels |
| US5027053A (en) * | 1990-08-29 | 1991-06-25 | Micron Technology, Inc. | Low power VCC /2 generator |
| DE4215444C2 (de) * | 1992-05-11 | 1994-02-24 | Telefunken Microelectron | Integrierte Schaltungsanordnung |
-
1998
- 1998-01-20 DE DE1998101994 patent/DE19801994C1/de not_active Expired - Fee Related
-
1999
- 1999-01-07 EP EP99100181A patent/EP0936526A3/de not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412509A (zh) * | 2013-08-29 | 2013-11-27 | 灿芯半导体(上海)有限公司 | 低功耗自断电电路及其电平转换电路 |
| CN103412509B (zh) * | 2013-08-29 | 2016-04-13 | 灿芯半导体(上海)有限公司 | 低功耗自断电电路及其电平转换电路 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19801994C1 (de) | 1999-08-26 |
| EP0936526A3 (de) | 2001-10-17 |
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