TW200639609A - Band-gap reference voltage circuit - Google Patents
Band-gap reference voltage circuitInfo
- Publication number
- TW200639609A TW200639609A TW094115030A TW94115030A TW200639609A TW 200639609 A TW200639609 A TW 200639609A TW 094115030 A TW094115030 A TW 094115030A TW 94115030 A TW94115030 A TW 94115030A TW 200639609 A TW200639609 A TW 200639609A
- Authority
- TW
- Taiwan
- Prior art keywords
- transistor
- reference voltage
- resistor
- band
- voltage circuit
- Prior art date
Links
Landscapes
- Control Of Electrical Variables (AREA)
Abstract
A band-gap reference voltage circuit including a constant current generator and a reference voltage generator. The reference voltage generator includes a first transistor, a second resistor, a first transistor and a second transistor, and the emitter area of the first transistor is larger than the emitter area of the second transistor. The base, collector of the first transistor and a terminal of the first resistor are electrically connected to the current generator; and the emitter of the first transistor is electrically connected to the collector of the second transistor; and the base of the second transistor is electrically connected to the other terminal of the first resistor. The collector voltage is used as the reference voltage; the second resistor is disposed between the base and the emitter of the second transistor. The current supplied by the constant current generator enables the transistor to operate in the active region.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94115030A TWI267718B (en) | 2005-05-10 | 2005-05-10 | Band-gap reference voltage circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94115030A TWI267718B (en) | 2005-05-10 | 2005-05-10 | Band-gap reference voltage circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200639609A true TW200639609A (en) | 2006-11-16 |
TWI267718B TWI267718B (en) | 2006-12-01 |
Family
ID=38220422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW94115030A TWI267718B (en) | 2005-05-10 | 2005-05-10 | Band-gap reference voltage circuit |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI267718B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI399631B (en) * | 2010-01-12 | 2013-06-21 | Richtek Technology Corp | Fast start-up low-voltage bandgap reference voltage generator |
TWI459174B (en) * | 2007-03-13 | 2014-11-01 | Analog Devices Inc | Low noise voltage reference circuit |
TWI461879B (en) * | 2008-02-13 | 2014-11-21 | Seiko Instr Inc | Constant current circuit |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI407289B (en) * | 2010-02-12 | 2013-09-01 | Elite Semiconductor Esmt | Voltage generator, thermometer and oscillator with the voltage generator |
-
2005
- 2005-05-10 TW TW94115030A patent/TWI267718B/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI459174B (en) * | 2007-03-13 | 2014-11-01 | Analog Devices Inc | Low noise voltage reference circuit |
TWI461879B (en) * | 2008-02-13 | 2014-11-21 | Seiko Instr Inc | Constant current circuit |
TWI399631B (en) * | 2010-01-12 | 2013-06-21 | Richtek Technology Corp | Fast start-up low-voltage bandgap reference voltage generator |
Also Published As
Publication number | Publication date |
---|---|
TWI267718B (en) | 2006-12-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |