OPA837 Low-Power, Precision, 105-MHz, Voltage-Feedback Op Amp datasheet

57 Pages·2017·2.79 MB·English

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OPA837,OPA2837
ZHCSGP3D–SEPTEMBER2017–REVISEDDECEMBER2018
OPAx837 低低功功耗耗 105MHz 电电压压反反馈馈精精密密运运算算放放大大器器
1 特特性性 3 说说明明
• 带宽：105MHz(A =1V/V) OPA837 和OPA2837是单通道和双通道单位增益稳
1 V
• 极低（修整后）的电源电流：600µA 定电压反馈放大器，与其他精密运算放大器相比能够提
• 增益带宽积：50MHz 供较高的MHz/mW 带宽。这两款3.0mW器件每通道
• 压摆率：105V/µs 仅消耗600µA（通过单个5V电源），能够以1V/V 的
• 负轨输入，轨至轨输出 增益提供105MHz带宽。±130µV（最大值）的极低修
• 单电源工作电压范围：2.7V至5.4V 整失调电压可提供典型值(±1σ) 为±0.4µV/°C的温
• 25°C下的输入偏移电压：±130µV（最大值） 漂。
• 输入偏移电压漂移（DCK封装）：
OPAx837 理论上非常适合单端逐次逼近型寄存器
<±1.6µV/°C（最大值）
(SAR)模数转换器(ADC)驱动应用，能够针对3mW
• 输入电压噪声：4.7nV/√Hz(>100Hz)
静态功率提供一种较低的输入点噪声级别(4.7nV/√
• HD2：-120dBc（2V 、100kHz时）
PP Hz)。极高的50MHz 增益带宽积可针对高频率提供低
• HD3：-145dBc（2V 、100kHz时）
PP 输出阻抗，这是在SARADC驱动器应用中提供快速
• 稳定时间：35ns，0.5V 阶跃到0.1%
充电电流所必需的。该低动态输出阻抗还适用于采用
• 5-µA 关断电流，并且能够从关断快速恢复
精密ADC的基准缓冲器应用。单通道OPA837 采用
（针对功率调节应用）
6引脚SOT-23 封装（包括电源关断特性）和5 引脚
2 应应用用 SC70封装，而双通道OPA2837则采用8 引脚
VSSOP封装和10引脚WQFN 封装。
• 12位至16位低功耗SAR 驱动器
• 精密ADC基准缓冲器 OPAx837 具有–40°C 至+125°C的宽额定运行温度范
• 极低功耗有源滤波器 围。
• 低功耗跨阻放大器
器器件件信信息息(1)
• 传感器信号调节
器器件件型型号号 封封装装 封封装装尺尺寸寸（（标标称称值值））
• 可穿戴设备
SOT-23(6) 2.90mm×1.60mm
• 低侧电流检测 OPA837
SC70(5) 2.00mm×1.25mm
具具有有真真正正接接地地输输入入和和输输出出范范围围的的低低功功耗耗、、低低噪噪声声、、精精密密 VSSOP(8) 3.00mm×3.00mm
OPA2837
单单端端SARADC驱驱动动器器 WQFN(10) 2.00mm×2.00mm
(1) 如需了解所有可用封装，请参阅数据表末尾的封装选项附录。
+ 5.0 V 4.096 V
REF5040
GND
3.3 V
+VCC 0 V 4.0 V
0 V 3.8 V + PD 22 (cid:159)
OPA837
Gain = 1.05 –
V/V ADS8860
–VCC 499 (cid:159) 2.2 nF 16-Bit SAR
1 MSPS
22 (cid:159)
10.0 k(cid:159)
GND GND
GND
– 0.23 V
LM7705 + 3.3 V
1
本文档旨在为方便起见，提供有关TI产品中文版本的信息，以确认产品的概要。有关适用的官方英文版本的最新信息，请访问www.ti.com，其内容始终优先。TI不保证翻译的准确
性和有效性。在实际设计之前，请务必参考最新版本的英文版本。
EnglishDataSheet:SBOS673
OPA837,OPA2837
ZHCSGP3D–SEPTEMBER2017–REVISEDDECEMBER2018 www.ti.com.cn
目目录录
1 特特性性.......................................................................... 1 7.2 FunctionalBlockDiagrams.....................................22
2 应应用用.......................................................................... 1 7.3 FeatureDescription.................................................23
3 说说明明.......................................................................... 1 7.4 DeviceFunctionalModes........................................26
4 修修订订历历史史记记录录........................................................... 2 8 ApplicationandImplementation........................ 30
8.1 ApplicationInformation............................................30
5 PinConfigurationandFunctions......................... 4
8.2 TypicalApplications................................................39
6 Specifications......................................................... 5
9 PowerSupplyRecommendations...................... 43
6.1 AbsoluteMaximumRatings......................................5
10 Layout................................................................... 43
6.2 ESDRatings..............................................................5
6.3 RecommendedOperatingConditions.......................5 10.1 LayoutGuidelines.................................................43
6.4 ThermalInformation:OPA837..................................6 10.2 LayoutExample....................................................44
6.5 ThermalInformation:OPA2837................................6 11 器器件件和和文文档档支支持持..................................................... 45
6.6 ElectricalCharacteristics:V =5V...........................7 11.1 文档支持................................................................45
S
6.7 ElectricalCharacteristics:V =3V...........................9 11.2 相关链接................................................................45
S
6.8 TypicalCharacteristics:V =5.0V.........................11 11.3 接收文档更新通知.................................................45
S
6.9 TypicalCharacteristics:V =3.0V.........................14 11.4 社区资源................................................................45
S
6.10 TypicalCharacteristics:±2.5-Vto±1.5-VSplit 11.5 商标....................................................................... 45
Supply......................................................................17 11.6 静电放电警告.........................................................45
7 DetailedDescription............................................ 22 11.7 术语表................................................................... 45
7.1 Overview.................................................................22 12 机机械械、、封封装装和和可可订订购购信信息息....................................... 46
4 修修订订历历史史记记录录
注：之前版本的页码可能与当前版本有所不同。
ChangesfromRevisionC(August2018)toRevisionD Page
• 已添加在说明部分添加了WQFN(RUN)封装...................................................................................................................... 1
• AddedOPA2837RUNpackagethermalinformationtodocument........................................................................................ 6
• Changedvaluesofmaximumandminimuminput-referredoffsetvoltageat25℃andacrosstemperaturein5Vand
3VElectricalCharacteristicstables....................................................................................................................................... 7
• ChangedvalueofmaximuminputoffsetcurrentdriftforOPA2837in5Vand3VElectricalCharacteristicstables. .........8
• ChangedminimumvalueofCMRRin5VElectricalCharacteristicstable............................................................................ 8
• 已添加referencetoTIDA-01565referencedesigninPower-DownOperationsection....................................................... 24
• 已添加referencetoTIDA-01565referencedesignin1-BitPGAOperationsection............................................................. 42
ChangesfromRevisionB(July2018)toRevisionC Page
• 已添加向文档添加了OPA2837RUN封装............................................................................................................................. 1
ChangesfromRevisionA(April2018)toRevisionB Page
• Changedinputcommon-modeimpedancein5Vand3Velectricalcharacteristicstables..................................................... 8
ChangesfromOriginal(September2017)toRevisionA Page
• 已添加文档中添加了OPA2837.............................................................................................................................................. 1
• 已添加单电源工作电压范围特性要点................................................................................................................................... 1
• 已更改将首页框图中的1SPS更改为1MSPS..................................................................................................................... 1
• AddedfootnotetoPinFunctionstable .................................................................................................................................. 4
• ChangedfootnotedescribingmethodofcomputationofslewrateinElectricalCharacteristics:V =5Vtable...................7
S
• ChangeddefaulttestconditioninElectricalCharacteristics:V =3Vtable ......................................................................... 9
S
2 版权©2017–2018,TexasInstrumentsIncorporated
OPA837,OPA2837
www.ti.com.cn ZHCSGP3D–SEPTEMBER2017–REVISEDDECEMBER2018
• ChangedfootnotedescribingmethodofcomputationofslewrateinElectricalCharacteristics:V =3Vtable ..................9
S
• Changedvaluesforcommon-modeinputrange,highinElectricalCharacteristics:V =3Vtable.................................... 10
S
• ChangedvaluesforV inElectricalCharacteristics:V =3Vtable.................................................................................. 10
OH S
• 已更改V =20mV toV =200mV inconditionsofNoninvertingResponseFlatnessvsGainandInverting
O PP OUT PP
ResponseFlatnessvsGainfigures...................................................................................................................................... 11
• 已更改gain–1V/Vtogain–2V/V,swappedlegendcolorsinInvertingOverdriveRecoveryfigure.................................. 12
• 已更改V =2V toV =1V inconditionsofTypicalCharacteristics:V =3.0Vsection....................................... 14
OUT PP OUT PP S
• 已更改V =20mV toV =200mV inNoninvertingResponseFlatnessvsGainandInvertingResponse
O PP OUT PP
FlatnessvsGainfigureconditions........................................................................................................................................ 14
• 已更改V toV ×–1gain,swappedlegendcolorsinInvertingOverdriveRecoveryfigure.............................................. 15
IN IN
• 已更改V =2V toV =1V inHarmonicDistortionvsR figureconditions........................................................ 16
O PP OUT PP LOAD
• 已更改V =2V toV =1V inHarmonicDistortionvsGainMagnitudefigureconditions..................................... 16
OUT PP OUT PP
• 已更改y-axiscaptioninTurn-OnTimetoSinusoidalInputandTurn-OffTimetoSinusoidalInputfigures........................19
• 已添加OPA838rowtoDeviceFamilyComparisontable.................................................................................................... 23
• 已更改EVMlinkinSplit-SupplyOperationsectionfromOPA837DBVtoOPA835DBV...................................................... 26
• 已更改V2valuefrom2.5to–2.5VinCharacterizationTestCircuitforNetwork,SpectrumAnalyzerfigure.....................30
• 已更改V valuefrom2.5Vto–2.5VinInvertingCharacterizationCircuitforNetworkAnalyzerfigure........................... 32
EE
• 已更改1SPSto1MSPSinOPA837andADS8860ExampleCircuitfigure....................................................................... 38
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ZHCSGP3D–SEPTEMBER2017–REVISEDDECEMBER2018 www.ti.com.cn
5 Pin Configuration and Functions
OPA837DBVPackage OPA837DCKPackage
6-PinSOT-23 5-PinSC70
TopView TopView
VOUT 1 6 VS+ VOUT 1 5 VS+
VS- 2 5 PD VS- 2
+IN 3 4 VIN- VIN+ 3 4 VIN-
OPA2837DGKPackage OPA2837RUNPackage
8-PinVSSOP 10-PinWQFN
TopView TopView
VS+
VOUT1 1 8 VS+ 10
VIN1- 2 7 VOUT2 VOUT1 1 9 VOUT2
A
VIN1+ 3 6 VIN2- VIN1- 2 8 VIN2-
B A B
VS- 4 5 VIN2+ VIN1+ 3 7 VIN2+
PD1 4 5 6 PD2
VS-
PinFunctions
PIN
OPA837 OPA2837 FUNCTION(1) DESCRIPTION
NAME
SOT-23 SC-70 VSSOP WQFN
Amplifierpowerdown.
PD 5 — — — I Low=disabled,high=normaloperation(pinmustbe
driven).
Amplifier1powerdown.
PD — — — 4 I Low=disabled,high=normaloperation(pinmustbe
1
driven).
Amplifier2powerdown.
PD — — — 6 I Low=disabled,high=normaloperation(pinmustbe
2
driven).
V 4 4 — — I Invertinginputpin
IN–
V 3 3 — — I Noninvertinginputpin
IN+
V — — 2 2 I Amplifier1invertinginputpin
IN1–
V — — 3 3 I Amplifier1noninvertinginputpin
IN1+
V — — 6 8 I Amplifier2invertinginputpin
IN2–
V — — 5 7 I Amplifier2noninvertinginputpin
IN2+
V 1 1 — — O Outputpin
OUT
V — — 1 1 O Amplifier1outputpin
OUT1
V — — 7 9 O Amplifier2outputpin
OUT2
V 2 2 4 5 P Negativepower-supplypin
S–
V 6 5 8 10 P Positivepower-supplyinput
S+
(1) I=input,O=output,andP=power.
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6 Specifications
6.1 Absolute Maximum Ratings
overoperatingfree-airtemperaturerange(unlessotherwisenoted)(1)
MIN MAX UNIT
Supplyvoltage 5.5 V
V toV
S– S+ Supplyturn-on/offmaximumdV/dT(2) 1 V/µs
V Inputvoltage V –0.5 V +0.5 V
I S– S+
V Differentialinputvoltage ±1 V
ID
I Continuousinputcurrent ±10 mA
I
I Continuousoutputcurrent(3) ±20 mA
O
SeeThermalInformation:
Continuouspowerdissipation
OPA837
T Maximumjunctiontemperature 150 °C
J
T Operatingfree-airtemperature –40 125 °C
A
T Storagetemperature –65 150 °C
stg
(1) StressesbeyondthoselistedunderAbsoluteMaximumRatingsmaycausepermanentdamagetothedevice.Thesearestressratings
only,whichdonotimplyfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderRecommended
OperatingConditions.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.
(2) Stayingbelowthis±supplyturn-onedgeratepreventstheedge-triggeredESDabsorptiondeviceacrossthesupplypinsfromturning
on.
(3) Long-termcontinuousoutputcurrentforelectromigrationlimits.
6.2 ESD Ratings
VALUE UNIT
Humanbodymodel(HBM),perANSI/ESDA/JEDECJS-001(1) ±1500
V Electrostaticdischarge V
(ESD) Charged-devicemodel(CDM),perJEDECspecificationJESD22-C101(2) ±1000
(1) JEDECdocumentJEP155statesthat500-VHBMallowssafemanufacturingwithastandardESDcontrolprocess.
(2) JEDECdocumentJEP157statesthat250-VCDMallowssafemanufacturingwithastandardESDcontrolprocess.
6.3 Recommended Operating Conditions
overoperatingfree-airtemperaturerange(unlessotherwisenoted)
MIN NOM MAX UNIT
V Single-supplyvoltage 2.7 5 5.4 V
S+
T Ambienttemperature –40 25 125 °C
A
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6.4 Thermal Information: OPA837
OPA837
DBV DCK
THERMALMETRIC(1) UNIT
(SOT23-6) (SC70)
6PINS 5PINS
RθJA Junction-to-ambientthermalresistance 194 203 °C/W
RθJCtop Junction-to-case(top)thermalresistance 129 152 °C/W
RθJB Junction-to-boardthermalresistance 39 76 °C/W
ψJT Junction-to-topcharacterizationparameter 26 58 °C/W
ψJB Junction-to-boardcharacterizationparameter 39 76 °C/W
(1) Formoreinformationabouttraditionalandnewthermalmetrics,seetheSemiconductorandICPackageThermalMetricsapplication
report.
6.5 Thermal Information: OPA2837
OPA2837
RUN DGK
THERMALMETRIC(1) UNIT
(WQFN-10) (VSSOP-8)
10PINS 8PINS
RθJA Junction-to-ambientthermalresistance 124.9 182 °C/W
RθJCtop Junction-to-case(top)thermalresistance 72.0 63.5 °C/W
RθJB Junction-to-boardthermalresistance 63.2 103.6 °C/W
ψJT Junction-to-topcharacterizationparameter 4.3 7.9 °C/W
ψJB Junction-to-boardcharacterizationparameter 63.0 101.8 °C/W
(1) Formoreinformationabouttraditionalandnewthermalmetrics,seetheSemiconductorandICPackageThermalMetricsapplication
report.
6 Copyright©2017–2018,TexasInstrumentsIncorporated
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6.6 Electrical Characteristics: V = 5 V
S
atV =5V,V =0V,R =0Ω,R =2kΩ,G=1V/V,inputandoutputreferencedtomid-supply,andT ≈25°C(unless
S+ S– F L A
otherwisenoted)
TEST
PARAMETER TESTCONDITIONS MIN TYP MAX UNIT LEVEL(1)
ACPERFORMANCE
VOUT=20mVPP,G=1 90 105 C
SSBW Small-signalbandwidth VOUT=20mVPP,G=2 45 MHz C
VOUT=20mVPP,G=10 5 C
GBP Gain-bandwidthproduct VOUT=20mVPP,G=10 45 50 MHz C
LSBW Large-signalbandwidth VOUT=2VPP,G=2 26 MHz C
Bandwidthfor0.1-dBflatness VOUT=200mVPP,G=2 6 MHz C
SR Slewrate From LSBW(2) 105 V/µs C
tR,tF Rise,falltime VOUT=0.5-Vstep,G=2,inputtR=10ns 10 11 ns C
Overshoot VOUT=2-Vstep,G=2,inputtR=40ns 7.0% C
Settlingtimeto0.1% VOUT=2.0-Vstep,G=1,inputtR=4ns 25 ns C
Settlingtimeto0.01% VOUT=2.0-Vstep,G=1,inputtR=4ns 40 ns C
HD2 Second-orderharmonicdistortion f=100kHz,VO=2VPP,G=1(seeFigure73) –120 dBc C
HD3 Third-orderharmonicdistortion f=100kHz,VO=2VPP,G=1(seeFigure73) –145 dBc C
Inputvoltagenoise f=500Hz 4.7 nV/√Hz C
Voltagenoise1/fcornerfrequency SeeFigure39 35 Hz C
Inputcurrentnoise f=20kHz 0.4 pA/√Hz C
Currentnoise1/fcornerfrequency SeeFigure39 5 kHz C
Overdriverecoverytime G=2,2xoutputoverdrive(seeFigure30) 75 ns C
Closed-loopoutputimpedance f=1MHz,G=1(seeFigure38) 0.14 Ω C
Channel-to-channelcrosstalk
f=10kHz -126 dBc C
(OPA2837)
DCPERFORMANCE
AOL Open-loopvoltagegain VO=±2V,RL=2kΩ 120 135 dB A
TA≈25°C –165 ±30 165 A
TA=0°Cto+70°C(DCKpackage) –205 ±30 235 B
Input-referredoffsetvoltage µV
TA=–40°Cto+85°C(DCKpackage) –269 ±30 261 B
TA=–40°Cto+125°C(DCKpackage) –269 ±30 325 B
DCKpackage,TA=–40°Cto+125°C –1.6 ±0.4 1.6 B
Inputoffsetvoltagedrift(3) DBV,RUNpackage,TA=–40°Cto+125°C –2.0 ±0.4 2.0 µV/°C B
DGKpackage,TA=–40°Cto+125°C ±0.67 B
TA≈25°C 150 340 520 A
Inputbiascurrent(4) TA=0°Cto+70°C 50 340 664 nA B
TA=–40°Cto+85°C 50 340 718 B
TA=–40°Cto+125°C 50 340 850 B
Inputbiascurrentdrift(3) TA=–40°Cto+125°C 0.8 1.5 3.3 nA/°C B
TA≈25°C(OPA837) –40 ±6 40 A
TA=0°Cto+70°C –46 ±6 52 B
Inputoffsetcurrent TA=–40°Cto+85°C –56 ±6 55 nA B
TA=–40°Cto+125°C –56 ±6 65 B
TA≈25°C(OPA2837) -60 ±8 60 A
(1) Testlevels(allvaluessetbycharacterizationandsimulation):(A)100%testedat25°C,overtemperaturelimitsbycharacterizationand
simulation;(B)Nottestedinproduction,limitssetbycharacterizationandsimulation;(C)Typicalvalueonlyforinformation.
(2) Thisslewrateistheaverageoftherisingandfallingtimeestimatedfromthelarge-signalbandwidthas:(0.8×V /√2)×2π×f
PEAK –3dB
wherethisf isthetypicalmeasured2-V bandwidthatgainsof1V/V.
–3dB PP
(3) Inputoffsetvoltagedrift,inputbiascurrentdrift,andinputoffsetcurrentdriftareaveragevaluescalculatedbytakingdataattheend
points,computingthedifference,anddividingbythetemperaturerange.Typicaldriftspecificationsare±1sigma.Maximumdrift
specificationsaresetbymin/maxsamplepackagedtestdatausingawafer-levelscreeneddrift.Min/Maxdriftisnotspecifiedbyfinal
automatedtestequipment(ATE)norbyQAsampletesting.
(4) Currentisconsideredpositiveoutofthepin.
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Electrical Characteristics: V = 5 V (continued)
S
atV =5V,V =0V,R =0Ω,R =2kΩ,G=1V/V,inputandoutputreferencedtomid-supply,andT ≈25°C(unless
S+ S– F L A
otherwisenoted)
TEST
PARAMETER TESTCONDITIONS MIN TYP MAX UNIT LEVEL(1)
Inputoffsetcurrentdrift(3) TA=–40°Cto+125°C –250 ±40 250 pA/°C B
TA=–40°Cto+125°C(OPA2837) –270 ±80 330 B
Input-referredoffsetvoltage
mismatch TA≈25°C(OPA2837) -220 50 220 µV A
INPUT
TA≈25°C,<3-dBdegradationinCMRRlimit –0.2 0 A
Common-modeinputrange,low TA=–40°Cto+125°C,<3-dBdegradationin –0.2 0 V B
CMRRlimit
TA≈25°C,<3-dBdegradationinCMRRlimit 3.7 3.8 A
Common-modeinputrange,high TA=–40°Cto+125°C,<3-dBdegradationin 3.7 3.8 V B
CMRRlimit
CMRR Common-moderejectionratio 91 110 dB A
Inputimpedancecommon-mode 175||1.5 MΩ||pF C
Inputimpedancedifferentialmode 180||0.5 kΩ||pF C
OUTPUT
TA≈25°C,G=2 0.05 0.1 A
VOL Outputvoltage,low V
TA=–40°Cto+125°C,G=5 0.05 0.1 B
TA≈25°C,G=2 4.9 4.95 A
VOH Outputvoltage,high V
TA=–40°Cto+125°C,G=5 4.8 4.9 B
Maximumcurrentintoaresistive
load TA≈25°C,±1.6Vinto27Ω,VIO<2mV ±58 ±70 mA A
Linearcurrentintoaresistiveload TA≈25°C,±1.7Vinto37.4Ω,AOL>80dB ±45 ±50 mA A
Linearcurrentintoaresistiveload TA=–40°Cto+125°C,±1.31Vinto37.4Ω, ±35 ±45 mA C
overtemperature AOL>80dB
Closed-loopoutputimpedance Gainof1V/V,±30-mADC 0.6 mΩ C
POWERSUPPLY
Specifiedoperatingvoltage 2.7 5.4 V B
Quiescentoperatingcurrentper TA≈25°C(5) 564 592 625 A
µA
amplifier(5-Vsupply) TA=–40°Cto+125°C 408 592 865 B
Supplycurrenttemperature
coefficientperamplifier TA=–40°Cto+125°C(seeFigure57) 1.1 1.9 2.4 µA/°C B
Positivepower-supplyrejection
+PSRR 95 110 dB A
ratio
Negativepower-supplyrejection
–PSRR 92 108 dB A
ratio
POWERDOWN(PinMustbeDriven)
Enablevoltagethreshold SpecifiedonaboveVS–+1.5V 1.5 V A
Disablevoltagethreshold SpecifiedoffbelowVS–+0.55V 0.55 V A
Power-downpinbiascurrent PD=0VtoVS+ –50 50 nA A
Power-downquiescentcurrent PD≤0.55V 4 5 10 µA A
Power-downquiescentcurrent
overtemperature PD≤0.55V,TA=–40°Cto+125°C 10 µA B
Turnontimedelay TimefromPD=hightoVOUT=90%offinal 300 ns C
value
Turnofftimedelay TimefromPD=lowtoVOUT=10%oforiginal 100 ns C
value
(5) Thetypicalspecificationisat25°CT.Themin,maxlimitsareexpandedfortheautomatedtestequipment(ATE)toaccountforan
J
ambientrangefrom22°Cto32°Cwitha2-µA/°Ctemperaturecoefficientonthesupplycurrent.
8 Copyright©2017–2018,TexasInstrumentsIncorporated
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6.7 Electrical Characteristics: V = 3 V
S
atV =3V,V =0V,R =0Ω,R =2kΩ,G=1V/V,inputandoutputreferencedtomid-supply,andT ≈25°C(unless
S+ S– F L A
otherwisenoted)
TEST
PARAMETER TESTCONDITIONS MIN TYP MAX UNIT LEVEL(1)
ACPERFORMANCE
VOUT=20mVPP,G=1 85 105 C
SSBW Small-signalbandwidth VOUT=20mVPP,G=2 45 MHz C
VOUT=20mVPP,G=10 5 C
GBP Gain-bandwidthproduct VOUT=20mVPP,G=10 40 50 MHz C
LSBW Large-signalbandwidth VOUT=1VPP,G=2 30 MHz C
Bandwidthfor0.1-dBflatness VOUT=200mVPP,G=2 6 MHz C
SR Slewrate FromLSBW(2) 65 V/µs C
tR,tF Rise,falltime VOUT=0.5-Vstep,G=2,inputtR=10ns 10 11 ns C
Overshoot VOUT=2-Vstep,G=2,inputtR=40ns 7% C
Settlingtimeto0.1% VOUT=0.5-Vstep,G=1,inputtR=4ns 35 ns C
Settlingtimeto0.01% VOUT=0.5-Vstep,G=1,inputtR=4ns 50 ns C
HD2 Second-orderharmonicdistortion f=100kHz,VO=1VPP,G=1(seeFigure73) –125 dBc C
HD3 Third-orderharmonicdistortion f=100kHz,VO=1VPP,G=1(seeFigure73) –138 dBc C
Inputvoltagenoise f=500Hz 4.9 nV/√Hz C
Voltagenoise1/fcornerfrequency SeeFigure39 35 Hz C
Inputcurrentnoise f=10kHz 0.4 pA/√Hz C
Currentnoise1/fcornerfrequency SeeFigure39 5 kHz C
Overdriverecoverytime G=2,2xoutputoverdrive(seeFigure29) 65 ns C
Closed-loopoutputimpedance f=1MHz,G=1(seeFigure38) 0.14 Ω C
Channel-to-channelcrosstalk
f=10kHz -126 dBc C
(OPA2837)
DCPERFORMANCE
VO=±1V,RL=2kΩ 120 133 A
AOL Open-loopvoltagegain dB
VO=±1V,RL=2kΩ(OPA2837) 110 133 A
TA≈25°C –165 ±30 165 A
TA=0°Cto+70°C –205 ±30 235 B
Input-referredoffsetvoltage µV
TA=–40°Cto+85°C –269 ±30 261 B
TA=–40°Cto+125°C –269 ±30 325 B
DCKpackage,TA=–40°Cto+125°C –1.6 ±0.4 1.6 B
Inputoffsetvoltagedrift(3) DBV,RUNpackage,TA=–40°Cto+125°C –2.0 ±0.4 2.0 µV/°C B
DGKpackage,TA=–40°Cto+125°C ±0.67 B
TA≈25°C 145 320 510 A
Inputbiascurrent(4) TA=0°Cto+70°C 50 320 659 nA B
TA=–40°Cto+85°C 50 320 708 B
TA=–40°Cto+125°C 50 320 840 B
Inputbiascurrentdrift(3) TA=–40°Cto+125°C 0.8 1.5 3.3 nA/°C B
TA≈25°C(OPA837) –40 ±6 40 A
TA=0°Cto+70°C –46 ±6 52 B
Inputoffsetcurrent TA=–40°Cto+85°C –56 ±6 55 nA B
TA=–40°Cto+125°C –56 ±6 65 B
TA≈25°C(OPA2837) –60 ±8 60 A
(1) Testlevels(allvaluessetbycharacterizationandsimulation):(A)100%testedat25°C,overtemperaturelimitsbycharacterizationand
simulation;(B)Nottestedinproduction,limitssetbycharacterizationandsimulation;(C)Typicalvalueonlyforinformation.
(2) Thisslewrateistheaverageoftherisingandfallingtimeestimatedfromthelarge-signalbandwidthas:(0.8xV /√2)×2π×f
PEAK –3dB
wherethisf isthetypicalmeasured2-Vppbandwidthatgainsof1V/V.
-3dB
(3) Inputoffsetvoltagedrift,inputbiascurrentdrift,andinputoffsetcurrentdriftareaveragevaluescalculatedbytakingdataattheend
points,computingthedifference,anddividingbythetemperaturerange.Typicaldriftspecificationsare±1sigma.Maximumdrift
specificationsaresetbymin/maxsamplepackagedtestdatausingawafer-levelscreeneddrift.Min/Maxdriftisnotspecifiedbyfinal
automatedtestequipment(ATE)norbyQAsampletesting.
(4) Currentisconsideredpositiveoutofthepin.
Copyright©2017–2018,TexasInstrumentsIncorporated 9
OPA837,OPA2837
ZHCSGP3D–SEPTEMBER2017–REVISEDDECEMBER2018 www.ti.com.cn
Electrical Characteristics: V = 3 V (continued)
S
atV =3V,V =0V,R =0Ω,R =2kΩ,G=1V/V,inputandoutputreferencedtomid-supply,andT ≈25°C(unless
S+ S– F L A
otherwisenoted)
TEST
PARAMETER TESTCONDITIONS MIN TYP MAX UNIT LEVEL(1)
Inputoffsetcurrentdrift(3) TA=–40°Cto+125°C –250 ±40 250 pA/°C B
TA=–40°Cto+125°C(OPA2837) –250 ±80 330 B
Input-referredoffsetvoltage
mismatch TA≈25°C(OPA2837) -220 50 220 µV A
INPUT
TA≈25°C,<3-dBdegradationinCMRRlimit –0.2 0 A
Common-modeinputrange,low TA=–40°Cto+125°C,<3-dBdegradationin –0.2 0 V B
CMRRlimit
TA≈25°C,<3-dBdegradationinCMRRlimit 1.7 1.8 A
Common-modeinputrange,high TA=–40°Cto+125°C,<3-dBdegradationin 1.7 1.8 V B
CMRRlimit
CMRR Common-moderejectionratio 90 105 dB A
Inputimpedancecommon-mode 300||1.5 MΩ||pF C
Inputimpedancedifferentialmode 180||0.5 kΩ||pF C
OUTPUT
TA≈25°C,G=2 0.05 0.1 A
VOL Outputvoltage,low V
TA=–40°Cto+125°C,G=2 0.10 0.2 B
TA≈25°C,G=2 2.9 2.95 A
VOH Outputvoltage,high V
TA=–40°Cto+125°C,G=2 2.8 2.9 B
Maximumcurrentintoaresistive
load TA≈25°C,±0.8Vinto17.5Ω,VIO<2mV ±45 ±55 mA A
Linearcurrentintoaresistiveload TA≈25°C,±0.9Vinto21.5Ω,AOL>80dB ±40 ±45 mA A
Linearcurrentintoaresistiveload TA=–40°Cto125°C,±0.7Vinto21.5Ω,AOL ±32 ±40 mA C
overtemperature >80dB
POWERSUPPLY
Specifiedoperatingvoltage 2.7 5.4 V B
Quiescentoperatingcurrentper TA≈25°C(5) 547 570 607 A
µA
amplifier(OPA837,3-Vsupply) TA=–40°Cto+125°C 404 570 817 B
Qamuipelsifcieern(tOoPpAer2a8t3in7g,c3u-Vrresnutpppelyr) TA≈25°C(5) 540 570 607 µA A
Supplycurrenttemperature
coefficientperamplifier TA=–40°Cto+125°C(seeFigure57) 0.8 1.7 2.2 µA/°C B
Positivepower-supplyrejection
+PSRR 90 110 dB A
ratio
Negativepower-supplyrejection
–PSRR 88 105 dB A
ratio
POWERDOWN(PinMustbeDriven)
Enablevoltagethreshold SpecifiedonaboveVS–+1.5V 1.5 V A
Disablevoltagethreshold SpecifiedoffbelowVS–+0.55V 0.55 V A
Power-downpinbiascurrent PD=0VtoVS+ –50 50 nA A
Power-downquiescentcurrent PD≤0.55V 1 3 8 µA A
Power-downquiescentcurrent
overtemperature PD≤0.55V,TA=–40°Cto+125°C 8 µA B
Turnontimedelay TimefromPD=hightoVOUT=90%offinal 300 ns C
value
Turnofftimedelay TimefromPD=lowtoVOUT=10%oforiginal 100 ns C
value
(5) Thetypicalspecisat25oCT.Themin,maxlimitsareexpandedforATEtoaccountforambientrangefrom22oCto32oCwitha+4-
j
uA/oCtemperaturecoefficientonthesupplycurrent.
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