SBOSA11A March   2020  – March 2021 OPA2206

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information: OPA2206
    5. 6.5 Electrical Characteristics: VS = ±5 V
    6. 6.6 Electrical Characteristics: VS = ±15 V
    7. 6.7 Typical Characteristics
  7. Parameter Measurement Information
    1. 7.1 Typical Specifications and Distributions
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Input Overvoltage Protection
      2. 8.3.2 Input Offset Trimming
      3. 8.3.3 Lower Input Bias With Super-Beta Inputs
      4. 8.3.4 Overload Power Limiter
      5. 8.3.5 EMI Rejection
    4. 8.4 Device Functional Modes
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Voltage Attenuator
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Discrete, Two-Op-Amp Instrumentation Amplifier
      3. 9.2.3 Input Buffer and Protection for ADC Driver
  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
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Input Overvoltage Protection

The inputs of the OPA2206 are individually protected for voltages up to ±40 V beyond either supply. For example, a common-mode voltage anywhere between –55 V and +55 V does not cause damage when powered from ±15-V supplies. Internal circuitry on each input provides low series impedance under normal signal conditions thus maintaining high performance under normal operating conditions. If the input is overloaded, the protection circuitry limits the input current to a value of approximately 4.8 mA.

During an input overvoltage condition, current flows through the input protection diodes into the power supplies, as shown in Figure 8-1. If the power supplies are unable to sink current, then Zener diode clamps (ZD1 and ZD2) must be placed on the power supplies to provide a current pathway to ground. During an overvoltage condition, the input bias current of the inputs increase as shown in Figure 8-2.

GUID-1B1F558F-BB69-4203-835D-F1703FD3744F-low.gifFigure 8-1 OPA2206 Input Overvoltage Current Path

Figure 8-2 shows the input current for input voltages from –55 V to +55 V when the OPA2206 is powered by ±15-V supplies.

GUID-20210322-CA0I-C8GX-NJWV-WC2NLQHMN21L-low.pngFigure 8-2 OPA2206 Input Current vs Input Voltage (VS = ±15 V)