Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Scrambler (zero drift) SOT 23 5

OUT

V–

+IN

V+

–IN

DBV PACKAGE

(TOP VIEW)

0.1Hz TO 10Hz NOISE

500nV/div

1s/div

OPA333-Q1

www.ti.com

SBOS522 –JUNE 2010

1.8-V MICROPOWER CMOS OPERATIONAL AMPLIFIER

ZERO-DRIFT SERIES

Check for Samples: OPA333-Q1

FEATURES

• Qualified for Automotive Applications

• Low Offset Voltage: 10 mV (Max)

• 0.01-Hz to 10-Hz Noise: 1.1 mV

• Quiescent Current: 17 mA

• Single-Supply Operation

• Supply Voltage: 1.8 V to 5.5 V

• Rail-to-Rail Input/Output

• MicroSize SOT23 (DBV) Package

DESCRIPTION/ORDERING INFORMATION

The OPA333 series of CMOS operational amplifiers uses a proprietary auto-calibration technique to

simultaneously provide very low offset voltage (10 mV max) and near-zero drift over time and temperature. These

miniature, high-precision, low-quiescent-current amplifiers offer high-impedance inputs that have a

common-mode range 100 mV beyond the rails, and rail-to-rail output that swings within 50 mV of the rails. Single

or dual supplies as low as 1.8 V (±0.9 V) and up to 5.5 V (±2.75 V) may be used. They are optimized for

low-voltage single-supply operation.

The OPA333 family offers excellent common-mode rejection ratio (CMRR) without the crossover associated with

traditional complementary input stages. This design results in superior performance for driving analog-to-digital

converters (ADCs) without degradation of differential linearity.

The OPA333 (single version) is available in the SOT23-5 package.

ORDERING INFORMATION

(1)

PACKAGE

(2)

ORDERABLE PART NUMBER TOP-SIDE MARKING

–40°C to 125°C SOT23 – DBV Reel of 2500 OPA333QDBVRQ1 QCNQ

(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (19 pages)

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OPA333-Q1 www.ti.com SBOS522 – JUNE 2010 1.8-V MICROPOWER CMOS OPERATIONAL AMPLIFIER ZERO-DRIFT SERIES Check for Samples: OPA333-Q1 FEATURES 1 • • • • • • • • Qualified for Automotive Applications Low Offset Voltage: 10 mV (Max) 0.01-Hz to 10-Hz Noise: 1.1 mVPP Quiescent Current: 17 mA Single-Supply Operation Supply Voltage: 1.8 V to 5.
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OPA333-Q1 SBOS522 – JUNE 2010 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure.
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OPA333-Q1 www.ti.com SBOS522 – JUNE 2010 ELECTRICAL CHARACTERISTICS: VS = 1.8 V to 5.5 V Boldface limits apply over the specified temperature range, TA = –40°C to 125°C. At TA = 25°C, RL = 10 kΩ connected to VS/2, VCM = VS/2, VOUT = VS/2 (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX 10 UNIT OFFSET VOLTAGE Input offset voltage vs temperature vs power supply Long-term stability VOS VS = 5 V 2 dVOS/dT VS = 5 V 0.5 PSRR VS = 1.8 V to 5.
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OPA333-Q1 SBOS522 – JUNE 2010 www.ti.com ELECTRICAL CHARACTERISTICS: VS = 1.8 V to 5.5 V (continued) Boldface limits apply over the specified temperature range, TA = –40°C to 125°C.
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OPA333-Q1 www.ti.com SBOS522 – JUNE 2010 TYPICAL CHARACTERISTICS At TA = 25°C, VS = 5 V, and CL = 0 pF (unless otherwise noted) OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION −10 −9 −8 −7 −6 −5 −4 −3 −2 −1 0 1 2 3 4 5 6 7 8 9 10 0 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.
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OPA333-Q1 SBOS522 – JUNE 2010 www.ti.com TYPICAL CHARACTERISTICS (continued) INPUT BIAS CURRENT vs COMMON−MODE VOLTAGE INPUT BIAS CURRENT vs TEMPERATURE 100 200 80 60 VS = 5V −IB 50 IB (pA) 20 0 −20 0 +IB −50 −40 −100 −60 +IB −80 −200 1 0 +I B −150 −100 2 3 4 5 −25 −50 0 QUIESCENT CURRENT vs TEMPERATURE 50 75 100 125 LARGE−SIGNAL STEP RESPONSE 25 G=1 RL = 10kΩ Output Voltage (1V/div) 20 VS = 5.5V IQ (µA) 25 Temperature (_ C) Common−Mode Voltage (V) 15 VS = 1.
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OPA333-Q1 www.ti.com SBOS522 – JUNE 2010 TYPICAL CHARACTERISTICS (continued) SETTLING TIME vs CLOSED−LOOP GAIN NEGATIVE OVER−VOLTAGE RECOVERY 600 4V Step 500 Settling Time (µs) 1V/div 2V/div Input 0 0 10 kΩ + 2.5V 1kΩ 400 300 200 0.001% Output O PA 333 100 0.01% − 2.5 V 0 10 1 Time (50µs/div) 100 Gain (dB) SMALL−SIGNAL OVERSHOOT vs LOAD CAPACITANCE 0.
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OPA333-Q1 SBOS522 – JUNE 2010 www.ti.com APPLICATION INFORMATION The OPA333 is unity-gain stable and free from unexpected output phase reversal. They use a proprietary auto-calibration technique to provide low offset voltage and very low drift over time and temperature. For lowest offset voltage and precision performance, circuit layout and mechanical conditions should be optimized.
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OPA333-Q1 www.ti.com SBOS522 – JUNE 2010 Achieving Output Swing to the Op Amp Negative Rail Some applications require output voltage swings from 0 V to a positive full-scale voltage (such as 2.5 V) with excellent accuracy. With most single-supply op amps, problems arise when the output signal approaches 0 V, near the lower output swing limit of a single-supply op amp. A good single-supply op amp may swing close to single-supply ground, but will not reach ground.
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OPA333-Q1 SBOS522 – JUNE 2010 www.ti.com 4.096V REF3140 +5V + R9 150kΩ 0.1µF R1 6.04kΩ R5 31.6kΩ D1 +5V 0.1µF + − R2 2.94kΩ − + + R2 549Ω R4 6.04kΩ VO O PA333A R6 200Ω K−Type Thermocouple 40.7µV/_ C R3 60.4Ω Zero Adj. Figure 3. Temperature Measurement Figure 4 shows the basic configuration for a bridge amplifier. VEX R1 +5V R R R R OPA333A VOUT R1 VREF Figure 4. Single Op-Amp Bridge Amplifier A low-side current shunt monitor is shown in Figure 5.
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OPA333-Q1 www.ti.com SBOS522 – JUNE 2010 3V +5V REF3130 Load R2 49.9kΩ R1 4.99kΩ R6 71.5kΩ V I LOAD RSHUNT 1Ω RN 56Ω OPA333A R3 4.99kΩ R4 48.7kΩ ADS1100 R7 1.18kΩ Stray Ground−Loop Resistance RN 56Ω I 2C (PGA Gain = 4) FS = 3.0V NOTE: 1% resistors provide adequate common−mode rejection at small ground−loop errors. Figure 5. Low-Side Current Monitor RG RSHUNT zener(1) R1(2) 10kΩ V+ MOSFET rated to stand−off supply voltage such as BSS84 for up to 50V.
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OPA333-Q1 SBOS522 – JUNE 2010 www.ti.com V1 −In INA152 OPA333 2 R2 100 kΩ 5 60 kΩ 1 MΩ 3V 1 MΩ 6 R1 NTC Thermistor OPA333 3 1 OPA333 V2 +In Figure 7. Thermistor Measurement VO = (1 + 2R2/R1) (V2 − V1) Figure 8. Precision Instrumentation Amplifier +VS R1 100kΩ VO R2 f LPF = 150Hz C4 1.
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PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 PACKAGING INFORMATION Orderable Device Status (1) OPA333AQDBVRQ1 ACTIVE Package Type Package Pins Package Drawing Qty SOT-23 DBV 5 3000 Eco Plan Lead/Ball Finish (2) Green (RoHS & no Sb/Br) MSL Peak Temp Op Temp (°C) Top-Side Markings (3) CU NIPDAU Level-1-260C-UNLIM (4) -40 to 125 QCNQ (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 26-Jul-2010 TAPE AND REEL INFORMATION *All dimensions are nominal Device OPA333AQDBVRQ1 Package Package Pins Type Drawing SPQ SOT-23 3000 DBV 5 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 179.0 8.4 Pack Materials-Page 1 3.2 B0 (mm) K0 (mm) P1 (mm) 3.2 1.4 4.0 W Pin1 (mm) Quadrant 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 26-Jul-2010 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) OPA333AQDBVRQ1 SOT-23 DBV 5 3000 203.0 203.0 35.
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