Datasheet

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

145

125

105

Offset Voltage ( V)m

-55 -15 5 25 125

Temperature ( C)°

-35 45 65

OPA188 Zero-Drift Architecture

Precision Laser Trim Architecture

85 105

OPA188

www.ti.com

SBOS642A –MARCH 2013–REVISED MARCH 2013

Precision, Low-Noise, Rail-to-Rail Output,

36-V, Zero-Drift Operational Amplifiers

Check for Samples: OPA188

FEATURES

DESCRIPTION

The OPA188 operational amplifier uses TI proprietary

2345

• Low Offset Voltage: 25 μV (max)

auto-zeroing techniques to provide low offset voltage

• Zero-Drift: 0.03 μV/°C

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

• Low Noise: 8.8 nV/√Hz

temperature. This miniature, high-precision, low-

quiescent current amplifier offers high input

– 0.1-Hz to 10-Hz Noise: 0.25 µV

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

used in the range of +4 V to +36 V (±2 V to ±18 V).

– CMRR: 146 dB

– Open-Loop Gain: 136 dB

The single version is available in the MicroSIZE

SOT23-5, MSOP-8, and SO-8 packages. All versions

• Gain Bandwidth: 2 MHz

are specified for operation from –40°C to +125°C.

• Quiescent Current: 510 μA (max)

• 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

• Transducer Applications

• Temperature Measurement

• Electronic Scales

• Medical Instrumentation

• Resistance Temperature Detectors

Zero-Drift Amplifier Portfolio

OFFSET VOLTAGE OFFSET VOLTAGE INPUT VOLTAGE NOISE

VERSION PRODUCT (µV, max) DRIFT (µV/°C, max) BANDWIDTH (MHz) (µV

, f = 0.1 Hz to 10 Hz)

OPA188 (4 V to 36 V) ±25 ±0.085 2 0.25

OPA333 (5 V) ±10 ±0.05 0.35 1.1

Single

OPA378 (5 V) ±50 ±0.25 0.9 0.4

OPA735 (12 V) ±5 ±0.05 1.6 2.5

OPA2188 (4 V to 36 V) ±25 ±0.085 2 0.25

OPA2333 (5 V) ±10 ±0.05 0.35 1.1

Dual

OPA2378 (5 V) ±50 ±0.25 0.9 0.4

OPA2735 (12 V) ±5 ±0.05 1.6 2.5

OPA4188 (4 V to 36 V) ±25 ±0.085 2 0.25

Quad

OPA4330 (5 V) ±50 ±0.25 0.35 1.1

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.

2TINA-TI is a trademark of Texas Instruments, Inc and DesignSoft, Inc.

3Bluetooth is a registered trademark of Bluetooth SIG, Inc.

4TINA, DesignSoft are trademarks of DesignSoft, Inc.

5All other 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 (34 pages)

PAGE 1
OPA188 www.ti.com SBOS642A – MARCH 2013 – REVISED MARCH 2013 Precision, Low-Noise, Rail-to-Rail Output, 36-V, Zero-Drift Operational Amplifiers Check for Samples: OPA188 FEATURES DESCRIPTION • Low Offset Voltage: 25 μV (max) • Zero-Drift: 0.03 μV/°C • Low Noise: 8.8 nV/√Hz – 0.1-Hz to 10-Hz Noise: 0.
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OPA188 SBOS642A – MARCH 2013 – REVISED MARCH 2013 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
OPA188 www.ti.com SBOS642A – MARCH 2013 – REVISED MARCH 2013 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 (1), and VCM = VOUT = VS / 2 (1), unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNIT OFFSET VOLTAGE VOS Input offset voltage PSRR Power-supply rejection ratio TA = –40°C to +125°C VS = 4 V to 36 V, TA = –40°C to +125°C Long-term stability (2) μV ±6 ±25 ±0.03 ±0.085 μV/°C ±0.
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OPA188 SBOS642A – MARCH 2013 – REVISED MARCH 2013 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(1), and VCM = VOUT = VS / 2(1), unless otherwise noted.
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OPA188 www.ti.com SBOS642A – MARCH 2013 – REVISED MARCH 2013 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 (1), and VCM = VOUT = VS / 2 (1), unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNIT OFFSET VOLTAGE VOS Input offset voltage PSRR Power-supply rejection ratio Long-term stability μV ±6 ±25 TA = –40°C to +125°C ±0.03 ±0.085 μV/°C VS = 4 V to 36 V, TA = –40°C to +125°C 0.075 0.
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OPA188 SBOS642A – MARCH 2013 – REVISED MARCH 2013 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(1), and VCM = VOUT = VS / 2(1), unless otherwise noted.
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OPA188 www.ti.com SBOS642A – MARCH 2013 – REVISED MARCH 2013 PIN CONFIGURATIONS OPA188 D, DGK PACKAGES (SO-8, MSOP-8) (TOP VIEW) (1) 1 8 NC -IN 2 7 V+ +IN 3 6 OUT V- 4 5 NC NC OPA188 DBV PACKAGE (SOT23-5) (TOP VIEW) OUT 1 V- 2 +IN 3 5 V+ 4 -IN (1) NC = no connection. FUNCTIONAL BLOCK DIAGRAM V+ C2 OPA188 CHOP1 GM1 NOTCH FILTER CHOP2 GM2 GM3 OUT +IN -IN C1 GM_FF V- Figure 1. Functional Block Diagram Table 1.
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OPA188 SBOS642A – MARCH 2013 – REVISED MARCH 2013 www.ti.com TYPICAL CHARACTERISTICS Table 2.
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OPA188 www.ti.com SBOS642A – MARCH 2013 – REVISED MARCH 2013 TYPICAL CHARACTERISTICS VS = ±18 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 100 pF, unless otherwise noted. 40 Data Taken From 3 Unique Fab Lots Data Taken From 3 Unique Fab Lots Percentage of Amplifiers (%) 16 14 12 10 8 6 4 35 30 25 20 15 10 5 2 15 5 Typical Units Shown VS = ±18 V VOS (mV) 0.09 0 -5 -5 -10 -10 -15 -2.5 -15 -55 -35 -15 5 25 45 65 85 105 125 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.
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OPA188 SBOS642A – MARCH 2013 – REVISED MARCH 2013 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. 140 25 0 GBW = 2MHz Dominant Pole @7mHz 120 Gain 20 Phase 90 60 40 Gain (dB) 10 80 Phase (ƒ) Gain (dB) 15 45 100 5 0 -5 135 20 -10 0 G = 10 G = +1 G = -1 -15 ±20 1 10 100 1k 10k 100k 1M 180 10M -20 10k C007 100k 1M 10M Frequency (Hz) Figure 8.
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OPA188 www.ti.com SBOS642A – MARCH 2013 – REVISED MARCH 2013 TYPICAL CHARACTERISTICS (continued) 40 Common-Mode Rejection Ratio (mV/V) Common-Mode Rejection Ratio (mV/V) VS = ±18 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 100 pF, unless otherwise noted. (V-) < VCM < (V+) - 1.5 V 35 (V-) + 0.5 V < VCM < (V+) - 1.5 V 30 VSUPPLY = ±2 V 25 20 15 10 5 0 8 (V-) < VCM < (V+) - 1.5 V 7 (V-) + 0.5 V < VCM < (V+) - 1.
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OPA188 SBOS642A – MARCH 2013 – REVISED MARCH 2013 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. 0.01 -80 0.001 -100 0.0001 -120 G = +1, RL = 10 kW G = -1, RL = 10 kW 0.00001 0.01 0.5 0.48 0.46 0.44 IQ (mA) Total Harmonic Distortion + Noise (%) -60 BW = 80 kHz Total Harmonic Distortion + Noise (dB) 0.1 1 10 0.4 0.38 0.36 0.34 0.32 -140 0.1 0.42 Specified Supply-Voltage Range 0.
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OPA188 www.ti.com SBOS642A – MARCH 2013 – REVISED MARCH 2013 TYPICAL CHARACTERISTICS (continued) VS = ±18 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 100 pF, unless otherwise noted. 40 RISO = 0 W 35 Device RISO = 50 W 30 25 -18 V 37 VPP Sine Wave (±18.
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OPA188 SBOS642A – MARCH 2013 – REVISED MARCH 2013 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. 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 32. LARGE-SIGNAL STEP RESPONSE 10 G = -1 8 6 4 12-Bit Settling 2 0 -2 (±1/2 LSB = ±0.024%) -4 -6 -8 Output D From Final Value (mV) Output D From Final Value (mV) 10 Figure 33.
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OPA188 www.ti.com SBOS642A – MARCH 2013 – REVISED MARCH 2013 TYPICAL CHARACTERISTICS (continued) VS = ±18 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 100 pF, unless otherwise noted. 160 140 EMIRR IN+ (dB) 120 100 80 60 40 20 0 10M 100M 1G 10G Frequency (Hz) Figure 38.
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OPA188 SBOS642A – MARCH 2013 – REVISED MARCH 2013 www.ti.com APPLICATION INFORMATION The OPA188 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.
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OPA188 www.ti.com SBOS642A – MARCH 2013 – REVISED MARCH 2013 GENERAL LAYOUT GUIDELINES For best operational performance of the device, good printed circuit board (PCB) layout practices are recommended. Including: • Low-ESR, 0.1-µF ceramic 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 single-supply applications.
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OPA188 SBOS642A – MARCH 2013 – REVISED MARCH 2013 www.ti.com CAPACITIVE LOAD AND STABILITY The device dynamic characteristics are optimized for a range of common operating conditions. The combination of low closed-loop gain and high capacitive loads decreases the amplifier phase margin and can lead to gain peaking or oscillations. As a result, larger capacitive loads must be isolated from the output.
PAGE 19
OPA188 www.ti.com SBOS642A – MARCH 2013 – REVISED MARCH 2013 Figure 43 shows a specific example where the input voltage, VIN, exceeds the positive supply voltage (+VS) by 500mV or more. Much of what happens in the circuit depends on the supply characteristics. If +VS can sink the current, one of the upper input steering diodes conducts and directs current to +VS. Excessively high current levels can flow with increasingly higher VIN.
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OPA188 SBOS642A – MARCH 2013 – REVISED MARCH 2013 www.ti.com APPLICATION EXAMPLES The following application examples highlight only a few of the circuits where the OPA188 can be used. TINA-TI™ (Free Download Software) Using a TINA-TI SPICE-Based Analog Simulation Program with the OPA188 TINA™ is a simple, powerful, and easy-to-use circuit simulation program based on a SPICE engine.
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OPA188 www.ti.com SBOS642A – MARCH 2013 – REVISED MARCH 2013 Figure 45 shows the basic configuration for a bridge amplifier. Click the following link to download the TINA-TI file: Bridge Amplifier Circuit. 15V R1 15V R R R OPA188 VOUT + R R1 VREF Figure 45. Bridge Amplifier Figure 46 shows the OPA188 configured in a low-side current-sensing application. The load current (ILOAD) creates a voltage drop across the shunt resistor (RSHUNT). This voltage is amplified by the OPA188, with a gain of 201.
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OPA188 SBOS642A – MARCH 2013 – REVISED MARCH 2013 www.ti.com Figure 47 shows the OPA188 configured as a precision programmable power supply using the 16-bit, voltage output DAC8581 and the OPA548 high-current amplifier. This application amplifies the digital-to-analog converter (DAC) voltage by a value of five and handles a large variety of capacitive and current loads. The OPA188 in the front-end provides precision and low drift across a wide range of inputs and conditions.
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OPA188 www.ti.com SBOS642A – MARCH 2013 – REVISED MARCH 2013 REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Original (March 2013) to Revision A • Page Changed document status to Production Data .....................................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 9-Jun-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 18-Jul-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ OPA188AIDBVR SOT-23 3000 180.0 DBV 5 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) 8.4 3.23 3.17 1.37 4.0 W Pin1 (mm) Quadrant 8.0 Q3 OPA188AIDBVT SOT-23 DBV 5 250 180.0 8.4 3.23 3.17 1.37 4.0 8.0 Q3 OPA188AIDGKR VSSOP DGK 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 18-Jul-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) OPA188AIDBVR SOT-23 DBV 5 3000 202.0 201.0 28.0 OPA188AIDBVT SOT-23 DBV 5 250 202.0 201.0 28.0 OPA188AIDGKR VSSOP DGK 8 2500 358.0 335.0 35.0 OPA188AIDGKT VSSOP DGK 8 250 202.0 201.0 28.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.