SBOS918B March   2018  – June 2026 OPA197-Q1 , OPA2197-Q1 , OPA4197-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information: OPA197-Q1
    5. 5.5 Thermal Information: OPA2197-Q1
    6. 5.6 Thermal Information: OPA4197-Q1
    7. 5.7 Electrical Characteristics: VS = ±4 V to ±18 V (VS = 8 V to 36 V)
    8. 5.8 Electrical Characteristics: VS = ±2.25 V to ±4 V (VS = 4.5 V to 8 V)
    9. 5.9 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Input Protection Circuitry
      2. 6.3.2 EMI Rejection
      3. 6.3.3 Phase Reversal Protection
      4. 6.3.4 Thermal Protection
      5. 6.3.5 Capacitive Load and Stability
      6. 6.3.6 Common-Mode Voltage Range
      7. 6.3.7 Electrical Overstress
      8. 6.3.8 Overload Recovery
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 16-Bit Precision Multiplexed Data-Acquisition System
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curve
      2. 7.2.2 Slew-Rate Limit for Input Protection
      3. 7.2.3 Precision Reference Buffer
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Examples
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 TINA-TI™ Simulation Software (Free Download)
        2. 8.1.1.2 TI Precision Designs
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

6.3.2 EMI Rejection

The OPAx197-Q1 use integrated electromagnetic interference (EMI) filtering to reduce the effects of EMI from sources such as wireless communications and densely-populated boards with a mix of analog signal chain and digital components. EMI immunity can be improved with circuit design techniques; the OPAx197-Q1 benefit from these design improvements. Texas Instruments has developed the ability to accurately measure and quantify the immunity of an operational amplifier over a broad frequency spectrum extending from 10MHz
to 6GHz. Figure 6-4 shows the results of this testing on the OPAx197-Q1. Table 6-1 shows the EMIRR IN+ values for the OPAx197-Q1 at particular frequencies commonly encountered in real-world applications. Applications listed in Table 6-1 may be centered on or operated near the particular frequency shown. Detailed information can also be found in the TI application report EMI Rejection Ratio of Operational Amplifiers available for download from www.ti.com.

OPA197-Q1 OPA2197-Q1 OPA4197-Q1 EMIRR TestingFigure 6-4 EMIRR Testing
Table 6-1 OPAx197-Q1 EMIRR IN+ For Frequencies of Interest
FREQUENCYAPPLICATION OR ALLOCATIONEMIRR IN+
400MHzMobile radio, mobile satellite, space operation, weather, radar, ultra-high frequency (UHF) applications44.1dB
900MHzGlobal system for mobile communications (GSM) applications, radio communication, navigation, GPS (to 1.6GHz), GSM, aeronautical mobile, UHF applications52.8dB
1.8GHzGSM applications, mobile personal communications, broadband, satellite, L-band (1GHz to 2GHz)61.0dB
2.4GHz802.11b, 802.11g, 802.11n, Bluetooth®, mobile personal communications, industrial, scientific and medical (ISM) radio band, amateur radio and satellite, S-band (2GHz to 4GHz)69.5dB
3.6GHzRadiolocation, aero communication and navigation, satellite, mobile, S-band88.7dB
5GHz802.11a, 802.11n, aero communication and navigation, mobile communication, space and satellite operation, C-band (4GHz to 8GHz)105.5dB