JAJSNM7 December   2021 REF35

ADVANCE INFORMATION  

  1. 特長
  2. アプリケーション
  3. 説明
  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
    1. 8.1 Solder Heat Shift
    2. 8.2 Temperature Coefficient
    3. 8.3 Long-Term Stability
    4. 8.4 Thermal Hysteresis
    5. 8.5 Noise Performance
      1. 8.5.1 Low Frequency (1/f) Noise
      2. 8.5.2 Broadband Noise
    6. 8.6 Power Dissipation
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Supply Voltage
      2. 9.3.2 EN Pin
      3. 9.3.3 NR Pin
    4. 9.4 Device Functional Modes
      1. 9.4.1 Basic Connections
      2. 9.4.2 スタートアップ
      3. 9.4.3 出力過渡動作
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application: Negative Reference Voltage
    3. 10.3 Typical Application: Precision Power Supply and Reference
      1. 10.3.1 Design Requirements
      2. 10.3.2 Detailed Design Procedure
        1. 10.3.2.1 リファレンスの選択
        2. 10.3.2.2 Input and Output Capacitors
        3. 10.3.2.3 Selection of ADC
      3. 10.3.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  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 サポート・リソース
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 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

Temperature Coefficient

The REF35 is designed and tested for a low output voltage temperature coefficient, which is defined as the change in output voltage over temperature. The temperature coefficient is calculated using the box method in which a box is formed by the min/max limits for the nominal output voltage over the operating temperature range. REF35 has a low maximum temperature coefficient of 10 ppm/°C from –40°C to +125°C and TBD ppm/°C from –40°C to +85°C. The box method specifies limits for the temperature error but does not specify the exact shape and slope of the device under test. Due to temperature curvature correction to achieve low-temperature drift, the temperature drift is expected to be non-linear. See SLYT183 for more information on the box method. The box method equation is shown in Equation 1

Equation 1. GUID-20210405-CA0I-HV5Z-CPFM-6H5P01QLFHZX-low.gif

Figure 8-3 shows a typical voltage versus temperature curves across 32 devices. Figure 8-4 shows the distribution of temperature coefficients across 32 devices.

GUID-32C95F0F-ABA7-47FB-9BB6-37CAFBCDD9D2-low.gifFigure 8-3 Output Voltage Vs Free-Air Temperature
GUID-32C95F0F-ABA7-47FB-9BB6-37CAFBCDD9D2-low.gifFigure 8-4 Temperature Coefficient Distribution