SBOSA95F May   2022  – October 2024 OPA2863A , OPA863A

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 OPA863A
    5. 6.5  Thermal Information OPA2863A
    6. 6.6  Electrical Characteristics VS = ±5 V
    7. 6.7  Electrical Characteristics VS = 3 V
    8. 6.8  Typical Characteristics: VS = ±5 V
    9. 6.9  Typical Characteristics: VS = 3 V
    10. 6.10 Typical Characteristics: VS = 3 V to 10 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 Stage
      2. 7.3.2 Output Stage
        1. 7.3.2.1 Overload Power Limit
      3. 7.3.3 ESD Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Power-Down Mode
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Active Filters
        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 Low-Power SAR ADC Driver and Reference Buffer
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

7.1 Overview

The OPAx863A bipolar voltage-feedback amplifiers offer a 50-MHz gain-bandwidth product with a proprietary in-package trim technology for high-precision performance with a maximum 95‑µV input offset voltage and 1.2‑µV/℃ offset drift. The OPAx863A are low-power, rail-to-rail input and output (RRIO) operational amplifiers with a voltage noise density of 6.3 nV/√Hz and a 1/f noise corner at 25 Hz. The OPAx863A work with a wide-supply voltage range of 2.7 V to 12.6 V and consume only 800 µA of quiescent current. The OPAx863A operate with a 2.7‑V supply, are RRIO capable, consume low power, and offer a power-down mode, which makes them an excellent amplifier choice for 3.3‑V or lower voltage applications that need excellent ac performance. The main and auxiliary input stages of the amplifier are matched for gain bandwidth product (GBW), noise, and offset voltage, and designed for applications that require a wide dynamic input range and good SNR.

The device includes an overload power limit feature that limits the increase in quiescent current with overdriven and saturated outputs to either of the supply rails. For more details of this overload power limit feature, see Section 7.3.2.1. The amplifier output is protected against short-circuit fault conditions.

The OPAx863A feature a power-down mode (PD) with a PD quiescent current of 20 µA (maximum) with a 3‑V supply, and a turn-on and turn-off time less than 8 µs.