Widlar bandgap reference (attributed)
E1026751
The Widlar bandgap reference is an early, influential voltage reference circuit design that produces a temperature-stable output voltage by exploiting the bandgap energy of silicon, attributed to analog IC pioneer Bob Widlar.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Widlar bandgap reference (attributed) canonical | 1 |
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
analog integrated circuit topology
ⓘ
bandgap voltage reference circuit ⓘ voltage reference circuit ⓘ |
| approximateBandgapEnergy | about 1.205 eV at 0 K (expressed as voltage) ⓘ |
| associatedWithOrganization | Fairchild Semiconductor NERFINISHED ⓘ |
| associatedWithPerson | Bob Widlar NERFINISHED ⓘ |
| attributedTo | Bob Widlar NERFINISHED ⓘ |
| basedOn |
bandgap energy of silicon
ⓘ
difference of base-emitter voltages (ΔVbe) ⓘ proportional-to-absolute-temperature (PTAT) voltage generation ⓘ summation of PTAT and complementary-to-absolute-temperature (CTAT) voltages ⓘ |
| combines | PTAT voltage with CTAT Vbe ⓘ |
| compensatesFor | negative temperature coefficient of Vbe ⓘ |
| developedInContextOf | linear integrated circuits ⓘ |
| field |
analog circuit design
ⓘ
integrated circuit design ⓘ |
| generates | PTAT voltage from ΔVbe across resistor ⓘ |
| hasCharacteristic |
early bandgap reference implementation
ⓘ
influential in analog IC design ⓘ low temperature coefficient of output voltage ⓘ realizes bandgap voltage by extrapolation to 0 K ⓘ uses resistor ratioing ⓘ uses transistor area ratioing ⓘ |
| hasEffect | compensate temperature dependence of base-emitter voltage ⓘ |
| hasOutputQuantity | approximately temperature-independent voltage ⓘ |
| hasPurpose | provide temperature-stable reference voltage ⓘ |
| hasTemperatureBehavior | output voltage relatively constant over temperature ⓘ |
| historicalSignificance |
foundation for modern precision voltage references
ⓘ
one of the first practical bandgap reference circuits ⓘ |
| influenced | later bandgap reference topologies ⓘ |
| namedAfter | Bob Widlar NERFINISHED ⓘ |
| operatesInMedium | monolithic bipolar integrated circuits ⓘ |
| typicalOutputVoltage | about 1.2 V GENERATED ⓘ |
| usedFor |
analog-to-digital converters
ⓘ
on-chip voltage reference generation ⓘ precision analog circuits ⓘ voltage regulators ⓘ |
| usesComponent |
bipolar junction transistor
NERFINISHED
ⓘ
operational amplifier or error amplifier ⓘ resistor ⓘ |
| usesSubstance | silicon ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.