1.8-V MICROPOWER CMOS OPERATIONAL AMPLIFIERS ZERO-DRIFT SERIES FE
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OPA333A-EP, OPA2333A-EP
1.8-V MICROPOWER CMOS OPERATIONAL AMPLIFIERS ZERO-DRIFT SERIES
FEATURES
Offset Voltage: (Max) 0.01-Hz 10-Hz Noise: µVPP Quiescent Current: Single-Supply Operation Supply Voltage: Rail-to-Rail Input/Output MicroSize Packages: SC70 SOT23
SUPPORTS DEFENSE, AEROSPACE, MEDICAL APPLICATIONS
Controlled Baseline Assembly/Test Site Fabrication Site Available Military (-55°C/125°C) Temperature Range Extended Product Life Cycle Extended Product-Change Notification Product Traceability
APPLICATIONS
Transducer Applications Temperature Measurements Electronic Scales Medical Instrumentation Battery-Powered Instruments Handheld Test Equipment
PACKAGE (TOP VIEW)
Custom temperature ranges available
PACKAGE (TOP VIEW)
PACKAGE (TOP VIEW)
0.1Hz 10Hz NOISE
500nV/div
1s/div
Please aware that important notice concerning availability, standard warranty, critical applications Texas Instruments semiconductor products disclaimers thereto appears this data sheet.
PRODUCTION DATA information current publication date. Products conform specifications terms Texas Instruments standard warranty. Production processing does necessarily include testing parameters.
Copyright 2007-2008, Texas Instruments Incorporated
OPA333A-EP, OPA2333A-EP
SGLS383B APRIL 2007 REVISED JUNE 2008 www.ti.com
DESCRIPTION/ORDERING INFORMATION
OPA333A series CMOS operational amplifiers uses proprietary auto-calibration technique simultaneously provide very offset voltage max) near-zero drift over time temperature. These miniature, high-precision, low-quiescent-current amplifiers offer high-impedance inputs that have common-mode range beyond rails, rail-to-rail output that swings within rails. Single dual supplies (±0.9 (±2.75 used. They optimized low-voltage single-supply operation. OPA333A family offers excellent common-mode rejection ratio (CMRR) without crossover associated with traditional complementary input stages. This design results superior performance driving analog-to-digital converters (ADCs) without degradation differential linearity. OPA333A (single version) available SC70-5 SOT23-5 packages. OPA2333A (dual version) offered SO-8 package. versions specified operation from -55°C 125°C. ORDERING INFORMATION
PRODUCT OPA333AMDBVREP OPA333AMDCKREP OPA2333AMDREP PACKAGE-LEAD SOT23-5 SC70-5 SO-8 PACKAGE DESIGNATOR PACKAGE MARKING OBYM 2333EP
most current package ordering information, Package Option Addendum this document, site www.ti.com. Package drawings, standard packing quantities, thermal data, symbolization, design guidelines available www.ti.com/sc/package.
CONFIGURATIONS
OPA333A SOT23-5 SC70-5 SO-8 OPA333A OPA2333A
Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)
Supply voltage Signal input terminals, voltage Output short circuit
(V+) Continuous 4000 1000
UNIT
-0.3 Human-Body Model (HBM) Charged-Device Model (CDM)
Operating temperature range Storage temperature range Junction temperature rating
Stresses beyond those listed under "absolute maximum ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated under "recommended operating conditions" implied. Exposure absolute-maximum-rated conditions extended periods affect device reliability. Input terminals diode clamped power-supply rails. Input signals that swing more than beyond supply rails should current limited less. Short circuit ground, amplifier package Long-term high-temperature storage and/or extended maximum recommended operating conditions result reduction overall device life. http://www.ti.com/ep_quality additional information enhanced plastic packaging.
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Electrical Characteristics:
Boldface limits apply over specified temperature range, -55°C 125°C. 25°C, connected VS/2, VS/2, VOUT VS/2 (unless otherwise noted).
PARAMETER OFFSET VOLTAGE Input offset voltage over temperature temperature power supply Long-term stability Channel separation, INPUT BIAS CURRENT Input bias current over Temperature Input offset current NOISE Input voltage noise, 0.01 Input voltage noise, Input current noise, INPUT VOLTAGE RANGE Common mode voltage range Common-Mode Rejection Ratio INPUT CAPACITANCE Differential Common mode OPEN-LOOP GAIN Open-loop voltage gain FREQUENCY RESPONSE Gain-bandwidth product Slew rate OUTPUT Voltage output swing from rail over temperature Short-circuit current Capacitive load drive
Open-loop output impedance
TEST CONDITIONS dVOS/dT PSRR
0.02
UNIT µV/°C µV/V µV/V
±150 ±140 ±400 ±200
CMRR (V-) (V+) (V-) (V+)
µVPP µVPP fA/Hz
(V-) (V+) kHz,
0.16
V/µs
POWER SUPPLY Specified voltage range Quiescent current amplifier over temperature Turn-on time TEMPERATURE RANGE Specified range 300-hour life test 150°C demonstrated randomly distributed variation approximately Typical Characteristics Submit Documentation Feedback
Copyright 2007-2008, Texas Instruments Incorporated
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Electrical Characteristics: (continued)
Boldface limits apply over specified temperature range, -55°C 125°C. 25°C, connected VS/2, VS/2, VOUT VS/2 (unless otherwise noted).
PARAMETER Operating range Storage range Thermal resistance SOT23-5 SO-8 SC70-5 °C/W °C/W °C/W TEST CONDITIONS UNIT
TYPICAL CHARACTERISTICS
25°C, (unless otherwise noted).
OFFSET VOLTAGE PRODUCTION DISTRIBUTION OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION
Population
Population Offset Voltage (µV)
OPEN-LOOP GAIN FREQUENCY
(dB) 100k Frequency (Hz)
-100
CMRR (dB)
Phase
Frequency (Hz) 100k
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0.0025 0.0050 0.0075 0.0100 0.0125 0.0150 0.0175 0.0200 0.0225 0.0250 0.0275 0.0300 0.0325 0.0350 0.0375 0.0400 0.0425 0.0450 0.0475 0.0500 Offset Voltage Drift (µV/_
COMMON-MODE REJECTION RATIO FREQUENCY
Copyright 2007-2008, Texas Instruments Incorporated
OPA333A-EP, OPA2333A-EP
TYPICAL CHARACTERISTICS (continued)
POWER-SUPPLY REJECTION RANGE FREQUENCY +PSRR Frequency (Hz) 100k
Output Swing OUTPUT VOLTAGE SWING OUTPUT CURRENT ±2.75V ±0.9V -40_C +125_C Output Current (mA) +25_C +25_C
-PSRR PSRR (dB)
-40_ +125_C +25_C -40_
INPUT BIAS CURRENT COMMON-MODE VOLTAGE (pA) -100 Common-Mode Voltage
QUIESCENT CURRENT TEMPERATURE
INPUT BIAS CURRENT TEMPERATURE 5.5V 1.8V
(pA)
-100
-150 -200
Temperature
LARGE-SIGNAL STEP RESPONSE
5.5V (µA) 1.8V
Output Voltage (1V/div)
Time (50µs/div)
Temperature (_C)
Copyright 2007-2008, Texas Instruments Incorporated
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OPA333A-EP, OPA2333A-EP
SGLS383B APRIL 2007 REVISED JUNE 2008 www.ti.com
TYPICAL CHARACTERISTICS (continued)
SMALL-SIGNAL STEP RESPONSE 2V/div Output Voltage (50mV/div) Input Output
POSITIVE OVER-VOLTAGE RECOVERY
1V/div
OPA3 2.5V
Time (5µs/div) NEGATIVE OVER-VOLTAGE RECOVERY
Time (50µs/div)
SETTLING TIME CLOSED-LOOP GAIN Step Settling Time (µs) 0.001% 0.01% Gain (dB)
Input 2V/div 1V/div
2.5V
Output
Time (50µs/div)
SMALL-SIGNAL OVERSHOOT LOAD CAPACITANCE Overshoot
500nV/div
0.1Hz 10Hz NOISE
Load Capacitance (pF) 1000
1s/div
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TYPICAL CHARACTERISTICS (continued)
CURRENT VOLTAGE NOISE SPECTRAL DENSITY FREQUENCY 1000 1000
Voltage Noise (nV//Hz)
Continues with (flicker) noise. Current Noise Voltage Noise
Frequency (Hz)
Copyright 2007-2008, Texas Instruments Incorporated
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Current Noise (fA//Hz)
Product Folder Link(s): OPA333A-EP OPA2333A-EP
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APPLICATION INFORMATION
OPA333A OPA2333A unity-gain stable free from unexpected output phase reversal. They proprietary auto-calibration technique provide offset voltage very drift over time temperature. lowest offset voltage precision performance, circuit layout mechanical conditions should optimized. Avoid temperature gradients that create thermoelectric (Seebeck) effects thermocouple junctions formed from connecting dissimilar conductors. These thermally-generated potentials made cancel ensuring they equal both input terminals. Other layout design considerations include: thermoelectric-coefficient conditions (avoid dissimilar metals) Thermally isolate components from power supplies other heat sources Shield input circuitry from currents, such cooling fans Following these guidelines will reduce likelihood junctions being different temperatures, which cause thermoelectric voltages µV/°C higher, depending materials used.
Operating Voltage
OPA333A OPA2333A amps operate over power-supply range (±0.9 ±2.75 Supply voltages higher than (absolute maximum) permanently damage device. Parameters that vary over supply voltage temperature shown Typical Characteristics section this data sheet.
Input Voltage
OPA333A OPA2333A input common-mode voltage range extends beyond supply rails. OPA333A designed cover full range without troublesome transition region found some other rail-to-rail amplifiers. Normally, input bias current about however, input voltages exceeding power supplies cause excessive current flow into input pins. Momentary voltages greater than power supply tolerated input current limited This limitation easily accomplished with input resistor(see Figure
Current-limiting resistor required input voltage exceeds supply rails 0.5V. IOVERLOAD 10mA
OPA333A
VOUT
Figure Input Current Protection
Internal Offset Correction
OPA333A OPA2333A amps auto-calibration technique with time-continuous 350-kHz signal path. This amplifier zero corrected every using proprietary technique. Upon power amplifier requires approximately achieve specified accuracy. This design aliasing flicker noise.
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Achieving Output Swing Negative Rail
Some applications require output voltage swings from positive full-scale voltage (such with excellent accuracy. With most single-supply amps, problems arise when output signal approaches near lower output swing limit single-supply amp. good single-supply swing close single-supply ground, will reach ground. output OPA333A OPA2333A made swing ground, slightly below, single-supply power source. requires another resistor additional, more negative, power supply than negative supply. pulldown resistor connected between output additional negative supply pull output down below value that output would otherwise achieve (see Figure
OPA333A
VOUT
Additional Negative Supply
Figure VOUT Range Ground OPA333A OPA2333A have output stage that allows output voltage pulled negative supply rail, slightly below, using technique previously described. This technique only works with some types output stages. OPA333A OPA2333A have been characterized perform with this technique; however, recommended resistor value approximately Note that this configuration will increase current consumption several hundreds microamps. Accuracy excellent down Limiting nonlinearity occurs below excellent accuracy returns output again driven above Lowering resistance pulldown resistor allows swing even further below negative rail. Resistances used achieve excellent accuracy down
General Layout Guidelines
Attention good layout practices always recommended. Keep traces short and, when possible, printed circuit board (PCB) ground plane with surface-mount components placed close device pins possible. Place 0.1-µF capacitor closely across supply pins. These guidelines should applied throughout analog circuit improve performance provide benefits, such reducing electromagnetic interference (EMI) susceptibility. Operational amplifiers vary their susceptibility radio frequency interference (RFI). generally identified variation offset voltage signal levels with changes interfering signal. OPA333A been specifically designed minimize susceptibility demonstrates remarkably sensitivity compared previous-generation devices. Strong fields still cause varying offset levels.
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4.096V 0.1µF 6.04k REF3140 150k 31.6k
0.1µF
2.94k
PA333A
K-Type Thermocouple 40.7µV/_ 6.04k
60.4 Zero Adj.
Figure Temperature Measurement Figure shows basic configuration bridge amplifier.
OPA333A
VOUT
VREF
Figure Single Op-Amp Bridge Amplifier low-side current shunt monitor shown Figure operational resistors used isolate ADS1100 from noise digital bus. Since ADS1100 16-bit converter, precise reference essential maximum accuracy. absolute accuracy required, power supply sufficiently stable, REF3130 omitted.
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Product Folder Link(s): OPA333A-EP OPA2333A-EP
OPA333A-EP, OPA2333A-EP
Load 4.99k 49.9k 71.5k LOAD RSHUNT 4.99k OPA333A 48.7k ADS1100 REF3130
Stray Ground-Loop Resistance
1.18k
(PGA Gain 3.0V
NOTE: resistors provide adequate common-mode rejection small ground-loop errors.
Figure Low-Side Current Monitor
RSHUNT
zener(1) R1(2)
OPA333A MOSFET rated stand-off supply voltage such BSS84 50V.
zener biasing methods shown.(3) Output Load RBIAS
NOTES: zener rated supply capability (that 5.1V OPA333). Current-limiting resistor. Choose zener biasing resistor dual NMOSFETS (FDG6301N, NTJD4001N, Si1034)
Figure High-Side Current Monitor
Copyright 2007-2008, Texas Instruments Incorporated
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OPA333A-EP, OPA2333A-EP
SGLS383B APRIL 2007 REVISED JUNE 2008 www.ti.com
INA152 OPA333
Thermistor
OPA333
OPA333 2R2/R1)
Figure Thermistor Measurement
Figure Precision Instrumentation Amplifier
100k 100k 100k GTOT 1kV/V INA321(1) 100k 47pF 390k 100k Inverted
OPA2333 OPA2333 OPA2333
150Hz 1.06nF
100k
OPA2333
GINA
OPA2333
OPA333
VOUT GOPA
100k
318k
Wilson VCENTRAL LL)/3
fHPF 0.5Hz (provides signal coupling)
OPA2333
+2.7V +5.5V 0.5Hz 150Hz
0.64µF 0.5Hz
NOTE: Other instrumentation amplifiers used, such INA326, which lower noise, higher quiescent current.
Figure Single-Supply, Very-Low-Power Circuit
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PACKAGE OPTION ADDENDUM
www.ti.com
15-Aug-2008
PACKAGING INFORMATION
Orderable Device OPA2333AMDREP OPA333AMDBVREP OPA333AMDCKREP V62/07633-01XE V62/07633-01YE V62/07633-02ZE
Status ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE
Package Type SOIC SOT-23 SC70 SOT-23 SC70 SOIC
Package Drawing
Pins Package Plan 2500 Green (RoHS Sb/Br) 3000 Green (RoHS Sb/Br) 3000 Green (RoHS Sb/Br) 3000 Green (RoHS Sb/Br) 3000 Green (RoHS Sb/Br) 2500 Green (RoHS Sb/Br)
Lead/Ball Finish NIPDAU NIPDAU NIPDAU NIPDAU NIPDAU NIPDAU
Peak Temp Level-1-260C-UNLIM Level-1-260C-UNLIM Level-1-260C-UNLIM Level-1-260C-UNLIM Level-1-260C-UNLIM Level-1-260C-UNLIM
marketing status values defined follows: ACTIVE: Product device recommended designs. LIFEBUY: announced that device will discontinued, lifetime-buy period effect. NRND: recommended designs. Device production support existing customers, does recommend using this part design. PREVIEW: Device been announced production. Samples available. OBSOLETE: discontinued production device.
Plan planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), Green (RoHS Sb/Br) please check latest availability information additional product content details. TBD: Pb-Free/Green conversion plan been defined. Pb-Free (RoHS): TI's terms "Lead-Free" "Pb-Free" mean semiconductor products that compatible with current RoHS requirements substances, including requirement that lead exceed 0.1% weight homogeneous materials. Where designed soldered high temperatures, Pb-Free products suitable specified lead-free processes. Pb-Free (RoHS Exempt): This component RoHS exemption either lead-based flip-chip solder bumps used between package, lead-based adhesive used between leadframe. component otherwise considered Pb-Free (RoHS compatible) defined above. Green (RoHS Sb/Br): defines "Green" mean Pb-Free (RoHS compatible), free Bromine (Br) Antimony (Sb) based flame retardants exceed 0.1% weight homogeneous material)
MSL, Peak Temp. Moisture Sensitivity Level rating according JEDEC industry standard classifications, peak solder temperature. Important Information Disclaimer:The information provided this page represents TI's knowledge belief date that provided. bases knowledge belief information provided third parties, makes representation warranty accuracy such information. Efforts underway better integrate information from third parties. taken continues take reasonable steps provide representative accurate information have conducted destructive testing chemical analysis incoming materials chemicals. suppliers consider certain information proprietary, thus numbers other limited information available release. event shall TI's liability arising such information exceed total purchase price part(s) issue this document sold Customer annual basis.
Addendum-Page
PACKAGE MATERIALS INFORMATION
www.ti.com
14-Aug-2008
TAPE REEL INFORMATION
*All dimensions nominal
Device
Package Package Pins Type Drawing SOIC SOT-23 SC70
Reel Reel Diameter Width (mm) (mm) 330.0 179.0 179.0 12.4
(mm)
(mm)
(mm)
(mm)
Pin1 (mm) Quadrant 12.0
OPA2333AMDREP OPA333AMDBVREP OPA333AMDCKREP
2500 3000 3000
Pack Materials-Page
PACKAGE MATERIALS INFORMATION
www.ti.com
14-Aug-2008
*All dimensions nominal
Device OPA2333AMDREP OPA333AMDBVREP OPA333AMDCKREP
Package Type SOIC SOT-23 SC70
Package Drawing
Pins
2500 3000 3000
Length (mm) 346.0 195.0 195.0
Width (mm) 346.0 200.0 200.0
Height (mm) 29.0 45.0 45.0
Pack Materials-Page
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