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  • OPAx189 Precision, Lowest-Noise, 36-V, Zero-Drift, 14-MHz, MUX-Friendly, Rail-to-Rail Output Operational Amplifiers

    • SBOS830I September   2017  – October 2021 OPA189 , OPA2189 , OPA4189

      PRODUCTION DATA  

  • CONTENTS
  • SEARCH
  • OPAx189 Precision, Lowest-Noise, 36-V, Zero-Drift, 14-MHz, MUX-Friendly, Rail-to-Rail Output Operational Amplifiers
  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information: OPA189
    5. 7.5 Thermal Information: OPA2189
    6. 7.6 Thermal Information: OPA4189
    7. 7.7 Electrical Characteristics
    8. 7.8 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Operating Characteristics
      2. 8.3.2 Phase-Reversal Protection
      3. 8.3.3 Input Bias Current Clock Feedthrough
      4. 8.3.4 EMI Rejection
      5. 8.3.5 EMIRR +IN Test Configuration
      6. 8.3.6 Electrical Overstress
      7. 8.3.7 MUX-Friendly Inputs
      8. 8.3.8 Noise Performance
      9. 8.3.9 Basic Noise Calculations
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 25-kHz Low-Pass Filter
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curve
      2. 9.2.2 Discrete INA + Attenuation for ADC With 3.3-V Supply
      3. 9.2.3 Bridge Amplifier
      4. 9.2.4 Low-Side Current Monitor
      5. 9.2.5 Programmable Power Supply
      6. 9.2.6 RTD Amplifier With Linearization
    3. 9.3 System Examples
      1. 9.3.1 24-Bit, Delta-Sigma, Differential Load Cell or Strain Gauge Sensor Signal Conditioning
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Development Support
        1. 12.1.1.1 TINA-TI™ Simulation Software (Free Download)
        2. 12.1.1.2 TI Precision Designs
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Support Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information
  14. IMPORTANT NOTICE

Package Options

Mechanical Data (Package|Pins)
  • PW|14
    • MPDS360A
  • D|14
    • MPDS177H
Thermal pad, mechanical data (Package|Pins)
Orderable Information
  • sbos830i_oa
  • sbos830i_pm
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  • Full reading width
    • Full reading width
    • Comfortable reading width
    • Expanded reading width
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DATA SHEET

OPAx189 Precision, Lowest-Noise, 36-V, Zero-Drift, 14-MHz, MUX-Friendly, Rail-to-Rail Output Operational Amplifiers

1 Features

  • Ultra-high precision:
    • Zero-drift: 0.005 μV/°C (OPA189)
    • Ultra-low offset voltage: 3 μV maximum (OPA189)
  • Excellent dc precision:
    • CMRR: 168 dB
    • Open-loop gain: 170 dB
  • Low noise:
    • en at 1 kHz: 5.2 nV/√Hz
    • 0.1-Hz to 10-Hz noise: 0.1 µVPP
  • Excellent dynamic performance:
    • Gain bandwidth: 14 MHz
    • Slew rate: 20 V/µs
    • Fast settling: 10-V step, 0.01% in 1.1 µs
  • Robust design:
    • MUX-friendly inputs
    • RFI/EMI filtered inputs
  • Wide supply range: 4.5 V to 36 V
  • Quiescent current: 1.7 mA (maximum)
  • Rail-to-rail output
  • Input includes negative rail

2 Applications

  • Battery test
  • Analog input module
  • Weigh scale
  • DC power supply, ac source, electronic load
  • Multifunction relay

3 Description

The OPA189, OPA2189, and OPA4189 (OPAx189) high-precision operational amplifiers are ultra-low noise, fast-settling, zero-drift devices that provide rail-to-rail output operation and feature a unique MUX-friendly architecture and controlled start-up system. These features and excellent ac performance, combined with only 0.4 µV of offset voltage and 0.005µV/°C of drift over temperature for the single-channel version, make the OPAx189 a great choice for precision instrumentation, signal measurement, and active filtering applications. Moreover, the MUX-friendly input architecture prevents inrush current when applying large input differential voltages, which improves settling performance in multichannel systems, all while providing robust ESD protection during shipment, handling, and assembly.

All versions are specified from –40°C to +125°C.

Device Information
PART NUMBER PACKAGE(1) BODY SIZE (NOM)
OPA189 SOIC (8) 4.90 mm × 3.90 mm
SOT-23 (5) 2.90 mm × 1.60 mm
VSSOP (8) 3.00 mm × 3.00 mm
OPA2189 SOIC (8) 4.90 mm × 3.90 mm
VSSOP (8) 3.00 mm × 3.00 mm
OPA4189 TSSOP (14) 5.00 mm × 4.40 mm
SOIC (14) 8.65 mm × 3.91 mm
(1) For all available packages, see the package option addendum at the end of the data sheet.
GUID-65E09B40-F830-4A72-A7CC-881579E11945-low.gifOPAx189 Preserves R-C Settling Performance in a Switched or Multiplexed Application
GUID-A08C3309-ADD6-45E3-AEEF-67F48BAD547F-low.pngOPAx189 MUX-Friendly Input Settles Quickly and Maintains High Input Impedance When Switched

4 Revision History

Changes from Revision H (August 2021) to Revision I (September 2021)

  • Changed OPA4189 from advanced information (preview) to production data (active) Go

Changes from Revision G (April 2021) to Revision H (August 2021)

  • Added OPA4189 in SOIC-14 (D) package as advanced information (preview)Go
  • Changed OPA4189IPW thermal information to final valuesGo

Changes from Revision F (July 2020) to Revision G (April 2021)

  • Added OPA4189 in TSSOP-14 (PW) package as advanced information (preview)Go

Changes from Revision E (May 2019) to Revision F (July 2020)

  • Changed OPA2189 VSSOP-8 (DGK) package from preview to production data (active)Go
  • Added Added input offset for OPA2189IDGKGo
  • Added Added input offset drift for OPA2189IDGKGo

Changes from Revision D (December 2018) to Revision E (May 2019)

  • Changed OPA189 SOT-23 (DBV) package from preview to production data (active)Go
  • Changed Figure 3, Input Bias Current Production Distribution, to show updated dataGo
  • Changed Figure 4, Input Offset Current Production Distribution, to show updated dataGo
  • Changed Figure 8, Open-Loop Gain and Phase vs Frequency, for clarityGo
  • Changed Figure 9, Closed-Loop Gain vs Frequency, for clarityGo
  • Added new Figure 39, OPA2189 Long-Term Drift Go

Changes from Revision C (October 2018) to Revision D (November 2018)

  • Changed OPA2189 SOIC (D) package from preview to production dataGo
  • Added input bias current for OPA2189IDGo
  • Added input offset current for OPA2189IDGo
  • Added crosstalk for OPA2189IDGo
  • Changed Maximum Output Voltage Amplitude vs Frequency to reflect undistorted operating rangeGo
  • Added OPA189 long-term drift and OPA2189 channel separation curvesGo

Changes from Revision B (October 2018) to Revision C (October 2018)

  • First release of production-data sheet for OPA189IDGKGo

Changes from Revision A (November 2017) to Revision B (October 2018)

  • Added input offset for OPA2189IDGo
  • Added input offset drift for OPA2189IDGo

Changes from Revision * (September 2017) to Revision A (October 2017)

  • First release of production-data sheet for OPA189ID device Go

 
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