SBOS940B May   2019  – December 2025 OPA818

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics: VS = ±5 V
    7. 6.7 Typical Characteristics: VS = 6 V
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Input and ESD Protection
      2. 7.3.2 Feedback Pin
      3. 7.3.3 Decompensated Architecture With Wide Gain-Bandwidth Product
      4. 7.3.4 Low Input Capacitance
    4. 7.4 Device Functional Modes
      1. 7.4.1 Split-Supply Operation (+4/–2 V to ±6.5 V)
      2. 7.4.2 Single-Supply Operation (6 V to 13 V)
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Wideband, Noninverting Operation
      2. 8.1.2 Wideband, Transimpedance Design Using the OPA818
    2. 8.2 Typical Applications
      1. 8.2.1 High-Bandwidth, 100-kΩ Gain Transimpedance Design
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Noninverting Gain of 2 V/V
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 Thermal Considerations
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Development Support
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DRG|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.1 Overview

The OPA818 is a 13-V supply, 2.7-GHz gain-bandwidth product (GBWP), voltage-feedback operational amplifier (op amp) featuring a 2.2-nV/√Hz, low-noise, JFET input stage. The OPA818 is decompensated to be typically stable in gains ≥ 7 V/V. The decompensated architecture allows for a favorable tradeoff of low quiescent current for a very high GBWP and low distortion performance in high-gain applications. The high voltage capability combined with a 1400-V/µs slew rate enables applications that require wide output swings (10 VPP at VS = 12 V) for high-frequency signals. Such applications include optical front ends, test and measurement, and medical systems. The low noise JFET input with pico amperes of bias current makes this device particularly attractive for high TIA gain applications and test and measurement front ends. The OPA818 also features a power-down mode that disables the core amplifier for power savings.

The OPA818 is built using TI's proprietary high-voltage, high-speed, complementary, bipolar SiGe process.