SBOS982G June   2020  – July 2022 OPA2863 , OPA4863 , OPA863

PRODMIX  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information: OPA863
    5. 7.5  Thermal Information: OPA2863
    6. 7.6  Thermal Information: OPA4863
    7. 7.7  Electrical Characteristics: VS = 10 V
    8. 7.8  Electrical Characteristics: VS = 3 V
    9. 7.9  Typical Characteristics: VS = 10 V
    10. 7.10 Typical Characteristics: VS = 3 V
    11. 7.11 Typical Characteristics: VS = 3 V to 10 V
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Input Stage
      2. 8.3.2 Output Stage
        1. 8.3.2.1 Overload Power Limit
      3. 8.3.3 ESD Protection
    4. 8.4 Device Functional Modes
      1. 8.4.1 Power-Down Mode
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Low-Side Current Sensing
      1. 9.2.1 Design Requirements
    3. 9.3 Front-End Gain and Filtering
    4. 9.4 Low-Power SAR ADC Driver and Reference Buffer
    5. 9.5 Variable Reference Generator Using MDAC
    6. 9.6 Clamp-On Ultrasonic Flow Meter
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Thermal Considerations
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    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

Overview

The OPAx863 devices are low-power, 50 MHz, rail-to-rail input and output (RRIO) bipolar voltage-feedback operational amplifiers with a voltage noise density of 5.9 nV/√Hz and 1/f noise corner at 25 Hz. The OPAx863 devices work in a wide-supply voltage range from 2.7 V to 12.6 V and consumes only 700 μA quiescent current. The OPAx863 devices operate with 2.7 V supply, are RRIO capable, consume low-power, and offer a power-down mode, which makes them ideal amplifiers for 3.3-V or lower voltage applications that need superior AC performance. The amplifier's main and auxiliary input stages are matched for gain bandwidth product (GBW), noise and offset voltage suitable for applications which require wide dynamic input range and good SNR.

The device includes an overload power limit feature which limits the increase in quiescent current with over-driven and saturated outputs to either of the supply rails. For more details of this overload power limit feature, see Section 8.3.2.1. The amplifier's output is protected against short-circuit fault conditions.

The OPAx863 devices feature a power-down mode (PD) with a PD quiescent current of 1.5 µA (maximum) with a 3 V supply, with turn-on and turn-off time within less than 6.5 µs.