ina2332低功耗单电源 CMOS 仪表放大器.docx

ina2332低功耗单电源 CMOS 仪表放大器.docx

《ina2332低功耗单电源 CMOS 仪表放大器.docx》由会员分享，可在线阅读，更多相关《ina2332低功耗单电源 CMOS 仪表放大器.docx（56页珍藏版）》请在冰豆网上搜索。

ina2332低功耗单电源CMOS仪表放大器

INA332

INA2332

SBOS216B–SEPTEMBER2001-REVISEDOCTOBER2006

Low-Power,Single-Supply,CMOSINSTRUMENTATIONAMPLIFIERS

FEATURES

●DESIGNEDFORLOWCOST

●HIGHGAINACCURACY:

G=5,0.07%,2ppm/︒C

●GAINSETWITHEXT.RESISTORSFOR>5V/V

●HIGHCMRR:

73dBDC,50dBat45kHz

●LOWBIASCURRENT:

0.5pA

●BANDWIDTH,SLEWRATE:

2.0MHz,5V/μs

●RAIL-TO-RAILOUTPUTSWING:

（V+）–0.02V

●WIDETEMPERATURERANGE:

–55︒Cto+125︒C

●LOWQUIESCENTCURRENT:

490μAmax/chan

●SHUTDOWN:

0.01μA

●MSOP-8SINGLEANDTSSOP-14DUALPACKAGES

DESCRIPTION

TheINA332andINA2332arerail-to-railoutput,low-powerCMOSinstrumentationamplifiersthatofferwiderange,single-supply,andbipolar-supplyoperation.Usingaspecialmanu-facturingflow,theINA332familyprovidesthelowestcostavailable,whilestillachievinglow-noiseamplificationofdif-ferentialsignalswithlowquiescentcurrentof415μA（drop-pingto0.01μAwhenshutdown）.Returningtonormalopera-tionwithinmicroseconds,thisINAcanbeusedforbatteryormultichannelapplications.

Configuredinternallyinagainof5V/V,theINA332offersflexibilityinhighergainsbychoosingexternalresistors.

APPLICATIONS

●INDUSTRIALSENSORAMPLIFIERS:

Bridge,RTD,Thermocouple,Position

●PHYSIOLOGICALAMPLIFIERS:

ECG,EEG,EMG

●A/DCONVERTERSIGNALCONDITIONING

●DIFFERENTIALLINERECEIVERSWITHGAIN

●FIELDUTILITYMETERS

●PCMCIACARDS

●AUDIOAMPLIFIERS

●COMMUNICATIONSYSTEMS

●TESTEQUIPMENT

●AUTOMOTIVEINSTRUMENTATION

TheINA332rejectslinenoiseanditsharmonicsbecausecommon-modeerrorremainslowevenathigherfrequencies.

HighbandwidthandslewratemaketheINA332idealfordirectlydrivingsamplingAnalog-to-Digital（A/D）convertersaswellasgeneral-purposeapplications.

Withhighprecision,lowcost,andsmallpackages,the

INA332outperformsdiscretedesigns.

Additionally,becausetheyarespecifiedforawidetempera-turerangeof–55︒Cto+125︒C,theINA332familycanbeusedindemandingenvironments.

R1R2

VREF

40kΩ

G=5+5（R2/R1）

10kΩ

10kΩ

40kΩ

RG

INA332

INA2332

ChA

VIN–

VIN+

A1A3

A2

VOUT

ChB

V+V–

Shutdown

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.ProductsconformtospecificationsperthetermsofTexasInstrumentsstandardwarranty.Productionprocessingdoesnotnecessarilyincludetestingofallparameters.

Copyright©2001-2006,TexasInstrumentsIncorporated

ABSOLUTEMAXIMUMRATINGS

（1）ELECTROSTATIC

SupplyVoltage,V+toV–....................................................................7.5V

SignalInputTerminals,Voltage

（2）.....................（V–）–0.5Vto（V+）+0.5VCurrent

（2）.....................................................10mA

OutputShort-Circuit（3）..............................................................ContinuousOperatingTemperature..................................................–55︒Cto+125︒CStorageTemperature......................................................–65︒Cto+150︒CJunctionTemperature....................................................................+150︒C

NOTES:

（1）Stressesabovetheseratingsmaycausepermanentdamage.Exposuretoabsolutemaximumconditionsforextendedperiodsmaydegradedevicereliability.

（2）Inputterminalsarediode-clampedtothepower-supplyrails.Inputsignalsthatcanswingmorethan0.5Vbeyondthesupplyrailsshouldbecurrentlimitedto10mAorless.（3）Short-circuittoground,oneamplifierperpackage.

DISCHARGESENSITIVITY

ThisintegratedcircuitcanbedamagedbyESD.TexasInstru-mentsrecommendsthatallintegratedcircuitsbehandledwithappropriateprecautions.Failuretoobserveproperhandlingandinstallationprocedurescancausedamage.

ESDdamagecanrangefromsubtleperformancedegradationtocompletedevicefailure.Precisionintegratedcircuitsmaybemoresusceptibletodamagebecauseverysmallparametricchangescouldcausethedevicenottomeetitspublishedspecifications.

PACKAGE/ORDERINGINFORMATION

（1）

PRODUCT

PACKAGE-LEAD

PACKAGEDESIGNATOR

TEMPERATURERANGE

SPECIFIEDPACKAGEMARKING

ORDERINGNUMBER

TRANSPORTMEDIA,QUANTITY

Single

INA332AIDGK

"

MSOP-8

"

DGK

"

–55︒Cto+125︒C

"

B32

"

INA332AIDGKTINA332AIDGKR

TapeandReel,250

TapeandReel,2500

Dual

INA2332AIPW

"

TSSOP-14

"

PW

"

–55︒Cto+125︒C

"

2332A

"

INA2332AIPWTINA2332AIPWR

TapeandReel,250

TapeandReel,2500

NOTE:

（1）Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdatasheet,orseetheTIwebsiteat.

PINCONFIGURATION

TopView

INA332

RG

VIN–

1

8

2

7

3

6

4

5

VIN+V–

RGA

1

INA2332

14

ShutdownA

Shutdown

VIN–A

2

13

VOUTA

V+

VIN+A

3

12

REFA

V–

4

11

V+

VOUT

VIN+B

5

10

REFB

REF

VIN–B

6

9

VOUTB

RGB

7

8

ShutdownB

Dual,TSSOP-14（PW）

MSOP-8（DGK）

ELECTRICALCHARACTERISTICS:

VS=+2.7VTO+5.5VBOLDFACElimitsapplyoverthespecifiedtemperaturerange,TA=–55︒CTO+125︒CAtTA=+25︒C,RL=10kΩ,G=25,andVCM=VS/2,unlessotherwisenoted.

PARAMETER

CONDITION

INA332AIDGKINA2332AIPW

UNITS

MIN

TYP

MAX

INPUT

InputOffsetVoltage,RTI

OverTemperatureVOSTemperatureCoefficientdVOS/dTvsPowerSupplyPSRR

OverTemperature

Long-TermStability

InputImpedance

InputCommon-ModeRange

Common-ModeRejectionCMRR

OverTemperature

Crosstalk,Dual

VS=+5V

VS=+2.7Vto+5.5V

VS=2.7VVS=5V

VS=5V,VCM=0.55Vto3.8VVS=5V,VCM=0.55Vto3.8VVS=2.7V,VCM=0.35Vto1.5V

0.35

0.55

60

60

±2

±5

±50

±0.4

1013||3

73

73

114

±8

±9

±250

±260

1.5

3.8

mV

mV

∝V/︒C

∝V/V

∝V/V

∝V/month

Ω||pFV

VdBdBdBdB

INPUTBIASCURRENT

BiasCurrentIB

OffsetCurrentIOS

VCM=VS/2

±0.5

±0.5

±10

±10

pA

pA

NOISE,RTI

VoltageNoise:

f=10HzeN

f=100Hz

f=1kHz

f=0.1Hzto10Hz

CurrentNoise:

f=1kHziN

RS=0Ω

280

96

46

7

0.5

nV/√HznV/√HznV/√Hz

∝Vp-pfA/√Hz

GAIN

（1）

GainEquation,ExternallySet

RangeofGain

GainError

vsTemperature

Nonlinearity

OverTemperature

G>5

G=5

G=25,VS=5V,VO=0.05to4.95

5

G=5+5（R2/R1）

±0.07

±2

±0.001

±0.002

1000

±0.4

±10

±0.010

±0.015

V/V

%

ppm/︒C

%ofFS

%ofFS

OUTPUT

OutputVoltageSwingfromRail

（2）

OverTemperature

CapacitanceLoadDrive

Short-CircuitCurrentISC

G≥10

50

50

SeeT

25

ypicalCharacteris

+48/–32

tics（3）

mV

mVpFmA

FREQUENCYRESPONSE

Bandwidth,–3dBBWSlewRateSRSettlingTime,0.1%tS

0.01%

OverloadRecovery

G=25

VS=5V,G=25

G=25,CL=100pF,VO=2Vstep

50%InputOverloadG=25

2.0

5

1.7

2.5

2

MHz

V/∝s

∝s

∝s

∝s

POWERSUPPLYSpecifiedVoltageRangeOperatingVoltageRange

QuiescentCurrentperChannelIQ

OverTemperature

ShutdownQuiescentCurrent/ChanISD

VSD>2.5（4）

VSD<0.8（4）

+2.7

+2.5to+5.5

415

0.01

+5.5

490

600

1

VV

∝A

∝A

∝A

TEMPERATURERANGESpecified/OperatingRangeStorageRange

ThermalResistance⎝JA

MSOP-8,TSSOP-14SurfaceMount

–55

–65

150

+125

+150

︒C

︒C

︒C/W

NOTES:

（1）Doesnotincludeerrorsfromexternalgainsettingresistors.

（2）Outputvoltageswingsaremeasuredbetweentheoutputandpower-supplyrails.OutputswingstorailonlyifG≥10.Outputdoesnotswingtopositiverailifgainislessthan10.

（3）Seetypicalcharacteristiccurve,PercentOvershootvsLoadCapacitance.（4）Seetypicalcharacteristiccurve,ShutdownVoltagevsSupplyVoltage.

TYPICALCHARACTERISTICS

AtTA=+25︒C,VS=5V,VCM=VS/2,RL=10kΩ,andCL=100pF,unlessotherwisenoted.

80

70

60Gain=500

GAINvsFREQUENCY

120

100

COMMON-MODEREJECTIONRATIO

vsFREQUENCY

Gain（dB）

40

30

20

10

0

–10

–20

10

Gain=100

Gain=25

Gain=5

1001k10k100k1M10MFrequency（Hz）

CMRR（dB）

80

60

40

20

0

101001k10k100k

Frequency（Hz）

100

90

80

70

PSRR（dB）

60

50

40

30

20

10

0

1

POWER-SUPPLYREJECTIONRATIO

vsFREQUENCY

101001k10k100k

Frequency（Hz）

6

MaximumOutputVoltage（Vp-p）

5

4

3

2

1

0

100

MAXIMUMOUTPUTVOLTAGEvsFREQUENCYVS=5.5V

VS=5.0V

VS=2.7V

1k10k100k1M10MFrequency（Hz）

10k

VNOISE（nV/√Hz）

1k

100

NOISEvsFREQUENCY

100

INOISE（fA/√Hz）

2μV/div

10

1

0.1HzTO10HzVOLTAGENOISE

100.1

1101001k10k100k

Frequency（Hz）

1s/div

TYPICALCHARACTERISTICS（Cont.）

AtTA=+25︒C,VS=5V,VCM=VS/2,RL=10kΩ,andCL=100pF,unlessotherwisenoted.

OUTPUTSWINGvsLOADRESISTANCE

25

20

COMMON-MODEINPUTRANGE

vsREFERENCEVOLTAGE

6

OutsideofNormalOperation

REFIncreasing

5

SwingtoRail（mV）

15

10

ToNegativeRail

5

4

Output