SBOS522A June   2010  – November 2019 OPA333-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      0.1-Hz to 10-Hz Noise
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 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
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Rail-to-Rail Input Voltage
      2. 7.3.2 Internal Offset Correction
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Achieving Output Swing to the Op Amp Negative Rail
    2. 8.2 Typical Applications
      1. 8.2.1 High-Side Voltage-to-Current (V-I) Converter
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Precision, Low-Level Voltage-to-Current (V-I) Converter
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
      3. 8.2.3 Composite Amplifier
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
        3. 8.2.3.3 Application Curve
      4. 8.2.4 Temperature Measurement
      5. 8.2.5 Single Op-Amp Bridge-Amplifier
      6. 8.2.6 Low-Side Current-Monitor
      7. 8.2.7 High-Side Current Monitor
      8. 8.2.8 Thermistor Measurement
      9. 8.2.9 Precision Instrumentation Amplifier
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

8.2.3 Composite Amplifier

The circuit shown in Figure 25 is a composite amplifier used to drive the reference on the ADS8881. The OPA333-Q1 provides excellent dc accuracy, and the THS4281 allows the output of the circuit to respond quickly to the transient current requirements of a typical successive approximation register (SAR) data-converter reference input. The ADS8881 system was optimized for THD and achieved a measured performance of –110 dB. The linearity of the ADC is shown Figure 26.

OPA333-Q1 Composite-Amplifier-Reference-Driver-Circuit_bos522.gifFigure 25. Composite Amplifier Reference Driver Circuit