SBOS410J June   2007  – July 2022 REF5010 , REF5020 , REF5025 , REF5030 , REF5040 , REF5045 , REF5050

PRODUCTION DATA  

  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
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. Parameter Measurement Information
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Temperature Monitoring
      2. 9.3.2 Temperature Drift
      3. 9.3.3 Thermal Hysteresis
      4. 9.3.4 Noise Performance
      5. 9.3.5 Long-Term Stability
      6. 9.3.6 Output Adjustment Using the TRIM/NR Pin
    4. 9.4 Device Functional Modes
      1. 9.4.1 Basic Connections
      2. 9.4.2 Supply Voltage
      3. 9.4.3 Negative Reference Voltage
  10. 10Applications and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Applications
      1. 10.2.1 16-Bit, 250-KSPS Data Acquisition System
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
        3. 10.2.1.3 Application Curve
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
    3. 12.3 Power Dissipation
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    2. 13.2 Receiving Notification of Documentation Updates
    3. 13.3 Support Resources
    4. 13.4 Trademarks
    5. 13.5 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ(パッケージ|ピン)
サーマルパッド・メカニカル・データ
発注情報

Parameter Measurement Information

Solder Heat Shift: The materials used in the manufacture of the REF50xx have differing coefficients of thermal expansion, resulting in stress on the device die when the part is heated. Mechanical and thermal stress on the device can cause the output voltages to shift, degrading the initial accuracy and drift specifications of the product. Reflow soldering is a common cause of this error.

To illustrate this effect, a total of 36 devices were soldered on printed-circuit-boards using lead-free solder paste and the paste manufacturer suggested reflow profile. The reflow profile is as shown in Figure 8-1. The printed-circuit-board is comprised of FR4 material. The board thickness is 0.8 mm and the area is 13 mm × 13 mm.

The reference voltage is measured before and after the reflow process across temperature; the typical shift of accuracy and drift is displayed in Figure 8-2 through Figure 8-9. Although all tested units exhibit very low shifts, higher shifts are also possible depending on the size, thickness, and material of the printed-circuit-board. An important note is that the histograms display the typical shift for exposure to a single reflow profile. Exposure to multiple reflows, as is common on printed circuit boards (PCBs) with surface-mount components on both sides, causes additional shifts in the output bias voltage. If the PCB is exposed to multiple reflows, then solder the device in the last pass to minimize device exposure to thermal stress.

GUID-B3BBF53B-4F2B-43C8-A2EB-23FF6B08E478-low.png Figure 8-1 Reflow Profile
GUID-E24095ED-A874-4215-9EC6-78819EBBF482-low.pngFigure 8-2 Solder Heat Shift Distribution (%), SOIC Package
GUID-CD5FC36E-ECD8-499A-8602-6402B60A907A-low.pngFigure 8-4 Drift Pre-Soldering Distribution, SOIC Package
GUID-5CB70C78-1750-4F77-9CBC-5FEACB0512D9-low.pngFigure 8-6 Drift Distribution Pre-Soldering, VSSOP Package
GUID-FDFCA543-0326-4C97-B70B-ED8B04C5E3DA-low.pngFigure 8-8 Drift Shift Distribution, SOIC Package
GUID-B5A357AE-EABE-4996-9728-7D2361BC2C22-low.pngFigure 8-3 Solder Heat Shift Distribution (%), VSSOP Package
GUID-B61BDAB6-E94B-4D01-AEEF-BCEB6C03FA1A-low.pngFigure 8-5 Drift Post Soldering Distribution, SOIC Package
GUID-AB71795D-D14F-4C16-BE9E-90F8F28C58C7-low.pngFigure 8-7 Drift Distribution Post-Soldering, VSSOP Package
GUID-A6C0153B-1D80-4CF1-8CE3-152C3853FFA3-low.pngFigure 8-9 Drift Shift Distribution, VSSOP Package