JAJS261B July   2007  – January 2018 DAC8881

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      ブロック図
  4. 4 改訂履歴
  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 Timing Characteristics for
    7. 6.7 Timing Characteristics for and
    8. 6.8 Typical Characteristics: VDD = +5 V
    9. 6.9 TYpical Characteristics: VDD = +2.7 V
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Analog Output
      2. 7.3.2  Reference Inputs
      3. 7.3.3  Output Range
      4. 7.3.4  Input Data Format
      5. 7.3.5  Hardware Reset
      6. 7.3.6  Power-On Reset
      7. 7.3.7  Program Reset Value
      8. 7.3.8  Power Down
      9. 7.3.9  Double-Buffered Interface
      10. 7.3.10 Load DAC Pin (LDAC)
        1. 7.3.10.1 Synchronous Mode
        2. 7.3.10.2 Asynchronous Mode
      11. 7.3.11 1.8 V to 5.5 V Logic Interface
    4. 7.4 Device Functional Modes
      1. 7.4.1 Serial Interface
        1. 7.4.1.1 Input Shift Register
          1. 7.4.1.1.1 Stand-Alone Mode
          2. 7.4.1.1.2 Daisy-Chain Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Bipolar Operation Using The DAC8881
    2. 8.2 Typical Application
      1. 8.2.1 DAC8881 Sample Hold Circuit
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
    3. 8.3 System Example
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11デバイスおよびドキュメントのサポート
    1. 11.1 ドキュメントのサポート
      1. 11.1.1 関連資料
    2. 11.2 ドキュメントの更新通知を受け取る方法
    3. 11.3 コミュニティ・リソース
    4. 11.4 商標
    5. 11.5 静電気放電に関する注意事項
    6. 11.6 Glossary

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

8.1.1 Bipolar Operation Using The DAC8881

The DAC8881 is designed for single-supply operation; however, a bipolar output is also possible using the circuit shown in Figure 72. This circuit gives a bipolar output voltage of VOUT. When GAIN = 1, VOUT can be calculated using Equation 2:

DAC8881 Bipolar_Output_Range.gif
Some pins are omitted for clarity.
Figure 72. Bipolar Operation Using the DAC8881
Equation 2. DAC8881 q_vout3_bas422.gif

Where:

VBIP(CODE) = bipolar output voltage versus CODE from the OPA211.

CODE = 0 to 262143. This is the digital code loaded to the DAC.

VREF = reference high voltage applied to the DAC8881.

As an example, a ±8-V output span can be achieved by using values of 5 V, 6.25 kΩ, 16.67 kΩ, and 10 kΩ for Vref, R1, R2, and R3 respectively.