Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Zero drift SOIC 8

145

125

105

OffsetVoltage( V)m

-55 -15 5 25 125

Temperature( C)°

-35 45 65

OPA2188Zero-DriftArchitecture

PrecisionLaserTrimArchitecture

85 105

OPA2188

www.ti.com

SBOS525B –AUGUST 2011–REVISED SEPTEMBER 2012

0.03-μV/°C Drift, Low-Noise, Rail-to-Rail Output,

36-V, Zero-Drift OPERATIONAL AMPLIFIERS

Check for Samples: OPA2188

FEATURES

DESCRIPTION

The OPA2188 operational amplifier uses TI

• Low Offset Voltage: 25 μV (max)

proprietary auto-zeroing techniques to provide low

• Zero-Drift: 0.03 μV/°C

offset voltage (25 μV, max), and near zero-drift over

• Low Noise: 8.8 nV/√Hz

time and temperature. This miniature, high-precision,

0.1-Hz to 10-Hz Noise: 0.25 µV

low quiescent current amplifier offers high input

impedance and rail-to-rail output swing within 15 mV

• Excellent DC Precision:

of the rails. The input common-mode range includes

PSRR: 142 dB

the negative rail. Either single or dual supplies can be

CMRR: 146 dB

used in the range of +4.0 V to +36 V (±2 V to ±18 V).

Open-Loop Gain: 136 dB

The OPA2188 is available in MSOP-8 and SO-8

• Gain Bandwidth: 2 MHz

packages. The device is specified for operation from

• Quiescent Current: 475 μA (max)

–40°C to +105°C.

• Wide Supply Range: ±2 V to ±18 V

• Rail-to-Rail Output:

Input Includes Negative Rail

• RFI Filtered Inputs

• MicroSIZE Packages

APPLICATIONS

• Bridge Amplifiers

• Strain Gauges

• Test Equipment

• Transducer Applications

• Temperature Measurement

• Electronic Scales

• Medical Instrumentation

• Resistance Temperature Detectors

• Precision Active Filters

Zero-Drift Amplifier Portfolio

OFFSET VOLTAGE DRIFT

VERSION PRODUCT OFFSET VOLTAGE (µV) (µV/°C) BANDWIDTH (MHz)

OPA188 (4 V to 36 V) 25 0.085 2

OPA333 (5 V) 10 0.05 0.35

Single

OPA378 (5 V) 50 0.25 0.9

OPA735 (12 V) 5 0.05 1.6

OPA2188 (4 V to 36 V) 25 0.085 2

OPA2333 (5 V) 10 0.05 0.35

Dual

OPA2378 (5 V) 50 0.25 0.9

OPA2735 (12 V) 5 0.05 1.6

OPA4188 (4 V to 36 V) 25 0.085 2

Quad

OPA4330 (5 V) 50 0.25 0.35

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.

2All trademarks are the property of their respective owners.

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 (28 pages)

PAGE 1
OPA2188 www.ti.com SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 0.03-μV/°C Drift, Low-Noise, Rail-to-Rail Output, 36-V, Zero-Drift OPERATIONAL AMPLIFIERS Check for Samples: OPA2188 FEATURES DESCRIPTION 1 • • • • • • • The OPA2188 operational amplifier uses TI proprietary auto-zeroing techniques to provide low offset voltage (25 μV, max), and near zero-drift over time and temperature.
PAGE 2
OPA2188 SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 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.
PAGE 3
OPA2188 www.ti.com SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 ELECTRICAL CHARACTERISTICS: High-Voltage Operation, VS = ±4 V to ±18 V (VS = +8 V to +36 V) At TA = +25°C, RL = 10 kΩ connected to VS / 2, and VCOM = VOUT = VS / 2, unless otherwise noted. OPA2188 PARAMETER CONDITIONS MIN TYP MAX UNIT OFFSET VOLTAGE VOS Input offset voltage PSRR Power-supply rejection ratio VS = 4 V to 36 V, VCM = VS / 2 25 0.085 μV/°C 0.075 0.3 μV/V 0.
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OPA2188 SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 www.ti.com ELECTRICAL CHARACTERISTICS: High-Voltage Operation, VS = ±4 V to ±18 V (VS = +8 V to +36 V) (continued) At TA = +25°C, RL = 10 kΩ connected to VS / 2, and VCOM = VOUT = VS / 2, unless otherwise noted.
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OPA2188 www.ti.com SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 ELECTRICAL CHARACTERISTICS: Low-Voltage Operation, VS = ±2 V to < ±4 V (VS = +4 V to < +8 V) At TA = +25°C, RL = 10 kΩ connected to VS / 2, and VCOM = VOUT = VS / 2, unless otherwise noted. OPA2188 PARAMETER CONDITIONS MIN TYP MAX UNIT OFFSET VOLTAGE VOS Input offset voltage PSRR Power-supply rejection ratio TA = –40°C to +105°C VS = 4 V to 36 V, VCM = VS / 2 25 0.085 μV/°C 0.075 0.3 μV/V 0.
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OPA2188 SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 www.ti.com ELECTRICAL CHARACTERISTICS: Low-Voltage Operation, VS = ±2 V to < ±4 V (VS = +4 V to < +8 V) (continued) At TA = +25°C, RL = 10 kΩ connected to VS / 2, and VCOM = VOUT = VS / 2, unless otherwise noted.
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OPA2188 www.ti.com SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 TYPICAL CHARACTERISTICS Table 1.
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OPA2188 SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 www.ti.com TYPICAL CHARACTERISTICS VS = ±18 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 100 pF, unless otherwise noted.
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OPA2188 www.ti.com SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 TYPICAL CHARACTERISTICS (continued) VS = ±18 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 100 pF, unless otherwise noted. IB AND IOS vs COMMON-MODE VOLTAGE 500 INPUT BIAS CURRENT vs TEMPERATURE 4000 IB+ +IB 400 IB and IOS (pA) IOS Input Bias Current (pA) IOS 300 IB- 3000 -IB 200 100 0 -100 2000 1000 0 -1000 -200 -300 -2000 -20 -15 -10 0 -5 5 10 15 20 -55 -35 5 -15 65 85 105 Figure 8.
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OPA2188 SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) VS = ±18 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 100 pF, unless otherwise noted. PSRR vs TEMPERATURE 0.1-Hz TO 10-Hz NOISE 5 Typical Units Shown VSUPPLY = ±2 V to ±18 V 0.8 0.6 0.4 50 nV/div Power-Supply Rejection Ratio (mV/V) 1 0.2 0 -0.2 -0.4 -0.6 -0.8 Peak-to-Peak Noise = 250 nV -1 -55 -35 -15 5 25 45 65 85 105 Time (1 s/div) 125 Temperature (°C) Figure 13.
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OPA2188 www.ti.com SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 TYPICAL CHARACTERISTICS (continued) VS = ±18 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 100 pF, unless otherwise noted. QUIESCENT CURRENT vs TEMPERATURE OPEN-LOOP GAIN AND PHASE vs FREQUENCY 0.5 180 140 VS = ±18 V 0.48 120 VS = ±2 V 0.46 Gain Phase 135 100 0.42 0.4 0.38 90 60 40 0.36 45 20 0.34 Phase (°) 80 Gain (dB) IQ (mA) 0.44 0 0.32 −20 0.
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OPA2188 SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) VS = ±18 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 100 pF, unless otherwise noted. SMALL-SIGNAL OVERSHOOT vs CAPACITIVE LOAD (100-mV Output Step) NO PHASE REVERSAL 40 ROUT = 0 W 35 Device ROUT = 50 W 30 25 -18 V 37 VPP Sine Wave (±18.
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OPA2188 www.ti.com SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 TYPICAL CHARACTERISTICS (continued) VS = ±18 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 100 pF, unless otherwise noted. LARGE-SIGNAL STEP RESPONSE LARGE-SIGNAL STEP RESPONSE G = +1 RL = 10 kW CL = 10 pF 5 V/div 5 V/div G = -1 RL = 10 kW CL = 10 pF Time (50 ms/div) Time (50 ms/div) Figure 31. Figure 32.
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OPA2188 SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 www.ti.com TYPICAL CHARACTERISTICS (continued) VS = ±18 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 100 pF, unless otherwise noted.
PAGE 15
OPA2188 www.ti.com SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 APPLICATION INFORMATION The OPA2188 operational amplifier combines precision offset and drift with excellent overall performance, making the device ideal for many precision applications. The precision offset drift of only 0.085 µV per degree Celsius provides stability over the entire temperature range. In addition, the device offers excellent overall performance with high CMRR, PSRR, and AOL.
PAGE 16
OPA2188 SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 www.ti.com GENERAL LAYOUT GUIDELINES For best operational performance of the device, good printed circuit board (PCB) layout practices are recommended. Low-loss, 0.1-µF bypass capacitors should be connected between each supply pin and ground, placed as close to the device as possible. A single bypass capacitor from V+ to ground is applicable to singlesupply applications.
PAGE 17
OPA2188 www.ti.com SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 ELECTRICAL OVERSTRESS Designers often ask questions about the capability of an operational amplifier to withstand electrical overstress. These questions tend to focus on the device inputs, but may involve the supply voltage pins or even the output pin.
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OPA2188 SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 www.ti.com APPLICATION EXAMPLES The application examples of Figure 44 and Figure 45 highlight only a few of the circuits where the OPA2188 can be used. 15 V U2 1/2 OPA2188 VOUTP 3.3 V VDIFF/2 -15 V R5 1 kW Ref 1 Ref 2 RG 500 W + VCM 10 R7 1 kW U1 INA159 VOUT Sense -15 V -VDIFF/2 U5 1/2 OPA2188 VOUTN 15 V Figure 44. Discrete INA + Attenuation for ADC with 3.3-V Supply +15 V (5 V) Out REF5050 In 1 mF 1 mF R2 49.1 kW R3 60.
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OPA2188 www.ti.com SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012 REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision A (June 2012) to Revision B • Page Changed second to last Applications bullet ..........................................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 18-Oct-2013 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
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PACKAGE MATERIALS INFORMATION www.ti.com 27-Aug-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant OPA2188AIDGKR VSSOP DGK 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 OPA2188AIDGKR VSSOP DGK 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 OPA2188AIDGKT VSSOP DGK 8 250 330.0 12.4 5.3 3.4 1.4 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 27-Aug-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) OPA2188AIDGKR VSSOP DGK 8 2500 366.0 364.0 50.0 OPA2188AIDGKR VSSOP DGK 8 2500 358.0 335.0 35.0 OPA2188AIDGKT VSSOP DGK 8 250 366.0 364.0 50.0 OPA2188AIDGKT VSSOP DGK 8 250 223.0 270.0 35.0 OPA2188AIDR SOIC D 8 2500 367.0 367.0 35.
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