REF5040资料

Table IPart NumberNominal Output Voltage (V)REF1912.048REF1922.50REF1933.00REF1944.50REF1955.00REF1963.30REF1984.096

ORDERING GUIDETemperaturePackagePackageModelRangeDescriptionOption1REF19xGP–40°C to +85°C8-Lead Plastic DIP2N-8REF19xES3–40°C to +85°C8-Lead SOICSO-8REF19xFS3–40°C to +85°C8-Lead SOICSO-8REF19xGS–40°C to +85°C8-Lead SOICSO-8REF19xGRU–40°C to +85°C8-Lead TSSOPRU-8REF19xGBC+25°CDICENOTES1N = Plastic DIP, SO = Small Outline, RU = Thin Shrink Small Outline.28-Lead plastic DIP only available in “G” grade.3REF193 and REF196 are available in “G” grade only.PIN CONFIGURATIONSaPrecision Micropower, Low Dropout,Voltage References

REF19x Series

8-Lead Narrow-Body SO and TSSOP(S Suffix and RU Suffix)TPVSSLEEPGNDNCNCOUTPUTTP12348765REF19xSERIESTOP VIEW(Not to Scale)

REV.DInformation furnished by Analog Devices is believed to be accurate andreliable. However, no responsibility is assumed by Analog Devices for itsuse, nor for any infringements of patents or other rights of third partieswhich may result from its use. No license is granted by implication orotherwise under any patent or patent rights of Analog Devices.8-Lead Epoxy DIP (P Suffix)TPVSSLEEPGNDNC = NO CONNECTTP PINS ARE FACTORY TEST POINTSNO USER CONNECTIONNCNCOUTPUTTP12348765REF19xSERIESTOP VIEW(Not to Scale)FEATURESInitial Accuracy: ؎2 mV maxTemperature Coefficient: 5 ppm/°C maxLow Supply Current: 45 ␮A maxSleep Mode: 15 ␮A maxLow Dropout VoltageLoad Regulation: 4 ppm/mALine Regulation: 4 ppm/VHigh Output Current: 30 mAShort Circuit ProtectionAPPLICATIONSPortable InstrumentationA-to-D and D-to-A ConvertersSmart SensorsSolar Powered ApplicationsLoop Current Powered InstrumentationsGENERAL DESCRIPTIONREF19x series precision bandgap voltage references use a pat-ented temperature drift curvature correction circuit and lasertrimming of highly stable thin film resistors to achieve a very lowtemperature coefficient and a high initial accuracy.The REF19x series are micropower, Low Dropout Voltage(LDV) devices providing a stable output voltage from suppliesas low as 100 mV above the output voltage and consuming lessthan 45 µA of supply current. In sleep mode, which is enabledby applying a low TTL or CMOS level to the sleep pin, theoutput is turned off and supply current is further reduced to lessthan 15 µA.The REF19x series references are specified over the extendedindustrial temperature range (–40°C to +85°C) with typicalperformance specifications over –40°C to +125°C for applica-tions such as automotive.All electrical grades are available in 8-Lead SOIC; the PDIP andTSSOP are only available in the lowest electrical grade. Prod-ucts are also available in die form.Test Pins (TP)The test pins, Pin 1 and Pin 5, are reserved for in-packagezener-zap. To achieve the highest level of accuracy at the out-put, the zener-zapping technique is used to trim the outputvoltage. Since each unit may require a different amount of ad-justment, the resistance value at the test pins will vary widelyfrom pin-to-pin as well as from part-to-part. The user shouldnot make any physical nor electrical connections to Pin 1 andPin 5.

FEATURES

DESCRIPTIONAPPLICATIONS

ADS8326

REF5040REF

VOUT

GND+IN

-IN

VIN+5VOPA365InputSignal

0V󰀀to󰀀4V+5V+5V

VDD

GND

CBYPASS1FmR150W

C11.2nFC222Fm1

2

3

48

7

6

5DNC(1)

NC(2)

TRIMDNC(1)

VIN

TEMP

GNDVOUTREF50xx

SO-8,󰀀MSOP-8(3)

(1)󰀀DNC󰀀=󰀀Do󰀀not󰀀connect.(2)󰀀NC󰀀=󰀀No󰀀internal󰀀connection.(3)󰀀MSOP-8󰀀package󰀀available󰀀Q3,󰀀2007.NOTES:REF5020,,REF5025

REF5030,REF5040

REF5045,REF5050

SBOS410–JUNE2007

Low-Noise,VeryLowDrift,Precision

VOLTAGEREFERENCE

•LOWTEMPERATUREDRIFT:

–High-Grade:3ppm/°C(max)TheREF50xxisafamilyoflow-noise,low-drift,very

highprecisionvoltagereferences.Thesereferences–Standard-Grade:8ppm/°C(max)arecapableofbothsinkingandsourcing,andare•HIGHACCURACY:veryrobustwithregardtolineandloadchanges.

–High-Grade:0.05%(max)Excellenttemperaturedrift(3ppm/°C)andhigh–Standard-Grade:0.1%(max)accuracy(0.05%)areachievedusingproprietary

FEATURES

DESCRIPTIONAPPLICATIONS

ADS8326

REF5040REF

VOUT

GND+IN

-IN

VIN+5VOPA365InputSignal

0V󰀀to󰀀4V+5V+5V

VDD

GND

CBYPASS1FmR150W

C11.2nFC222Fm1

2

3

48

7

6

5DNC(1)

NC(2)

TRIMDNC(1)

VIN

TEMP

GNDVOUTREF50xx

SO-8,󰀀MSOP-8(3)

(1)󰀀DNC󰀀=󰀀Do󰀀not󰀀connect.(2)󰀀NC󰀀=󰀀No󰀀internal󰀀connection.(3)󰀀MSOP-8󰀀package󰀀available󰀀Q3,󰀀2007.NOTES:REF5020,,REF5025

REF5030,REF5040

REF5045,REF5050

SBOS410–JUNE2007

Low-Noise,VeryLowDrift,Precision

VOLTAGEREFERENCE

•LOWTEMPERATUREDRIFT:

–High-Grade:3ppm/°C(max)TheREF50xxisafamilyoflow-noise,low-drift,very

highprecisionvoltagereferences.Thesereferences–Standard-Grade:8ppm/°C(max)arecapableofbothsinkingandsourcing,andare•HIGHACCURACY:veryrobustwithregardtolineandloadchanges.

–High-Grade:0.05%(max)Excellenttemperaturedrift(3ppm/°C)andhigh–Standard-Grade:0.1%(max)accuracy(0.05%)areachievedusingproprietary

+5V Precision

VOLTAGE REFERENCE

FEATURES

qOUTPUT VOLTAGE: +5V ±0.2% max

qEXCELLENT TEMPERATURE STABILITY:

10ppm/°C max (–40°C to +85°C)

qLOW NOISE: 10µVPP max (0.1Hz to 10Hz)

qEXCELLENT LINE REGULATION:

0.01%/V max

qEXCELLENT LOAD REGULATION:

0.008%/mA max

qLOW SUPPLY CURRENT: 1.4mA max

q

SHORT-CIRCUIT PROTECTED

qWIDE SUPPLY RANGE: 8V to 40V

qINDUSTRIAL TEMPERATURE RANGE:

–40°C to +85°C

qPACKAGE OPTIONS: DIP-8, SO-8

APPLICATIONS

qPRECISION REGULATORS

qCONSTANT CURRENT SOURCE/SINK

q

DIGITAL VOLTMETERS

qV/F CONVERTERS

qA/D AND D/A CONVERTERS

qPRECISION CALIBRATION STANDARD

qTEST EQUIPMENTDESCRIPTION

The REF02 is a precision 5V voltage reference. The drift is

laser trimmed to 10ppm/°C max over the extended industrial

and military temperature range. The REF02 provides a stable

5V output that can be externally adjusted over a ±6% range