JAJSGD1B October   2018  – December 2018 INA901-SP

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      概略回路図
  4. 4 改訂履歴
  5. 5 概要（続き）
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 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 Quality Conformance Inspection
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Basic Connection
      2. 8.3.2 Selecting RS
      3. 8.3.3 Transient Protection
    4. 8.4 Device Functional Modes
      1. 8.4.1 First- or Second-Order Filtering
      2. 8.4.2 Accuracy Variations as a Result of VSENSE and Common-Mode Voltage
        1. 8.4.2.1 Normal Case 1: VSENSE ≥ 20 mV, VCM ≥ VS
        2. 8.4.2.2 Normal Case 2: VSENSE ≥ 20 mV, VCM < VS
        3. 8.4.2.3 Low VSENSE Case 1: VSENSE < 20 mV, –16 V ≤ VCM < 0; and Low VSENSE Case 3: VSENSE < 20 mV, VS < VCM ≤ 80 V
        4. 8.4.2.4 Low VSENSE Case 2: VSENSE < 20 mV, 0 V ≤ VCM ≤ VS
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 RFI and EMI
    2. 11.2 Layout Example
  12. 12デバイスおよびドキュメントのサポート
    1. 12.1 ドキュメントのサポート
      1. 12.1.1 関連資料
    2. 12.2 ドキュメントの更新通知を受け取る方法
    3. 12.3 コミュニティ・リソース
    4. 12.4 商標
    5. 12.5 静電気放電に関する注意事項
    6. 12.6 Glossary
  13. 13メカニカル、パッケージ、および注文情報

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

8.4.2.1 Normal Case 1: VSENSE ≥ 20 mV, VCM ≥ VS

This region of operation provides the highest accuracy. Here, the input offset voltage is characterized and measured using a two-step method. First, the gain is determined by Equation 1.

Equation 1. INA901-SP q_g_bos381.gif

where

  • VOUT1 = Output voltage with VSENSE = 100 mV and
  • VOUT2 = Output voltage with VSENSE = 20 mV.

Then the offset voltage is measured at VSENSE = 100 mV and referred to the input (RTI) of the current shunt monitor, as shown in Equation 2.

Equation 2. INA901-SP q_vos_bos381.gif

In the Typical Characteristics section, the Output Error vs Common-Mode Voltage curve (Figure 6) shows the highest accuracy for the this region of operation. In this plot, VS = 12 V; for VCM ≥ 12 V, the output error is at its minimum. This case is also used to create the VSENSE ≥ 20-mV output specifications in the Electrical Characteristics table.