ZHCSJE3C february   2019  – august 2021 INA191 , INA2191

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 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
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Precision Current Measurement
      2. 7.3.2 Low Input Bias Current
      3. 7.3.3 Low Quiescent Current With Output Enable
      4. 7.3.4 Bidirectional Current Monitoring (INA2191 Only)
      5. 7.3.5 High-Side and Low-Side Current Sensing
      6. 7.3.6 High Common-Mode Rejection
      7. 7.3.7 Rail-to-Rail Output Swing
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation
      2. 7.4.2 Unidirectional Mode
      3. 7.4.3 Bidirectional Mode (INA2191 Only)
      4. 7.4.4 Input Differential Overload
      5. 7.4.5 Shutdown
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Basic Connections
      2. 8.1.2 RSENSE and Device Gain Selection
      3. 8.1.3 Signal Conditioning
      4. 8.1.4 Common-Mode Voltage Transients
    2. 8.2 Typical Application
      1. 8.2.1 Microamp Current Measurement
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 接收文档更新通知
    3. 11.3 支持资源
    4. 11.4 Trademarks
    5. 11.5 静电放电警告
    6. 11.6 术语表
  13. 12Mechanical, Packaging, and Orderable Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • YFD|6
散热焊盘机械数据 (封装 | 引脚)
订购信息

5 Pin Configuration and Functions

GUID-50AB94A3-8D39-4E2F-B7B0-C4DDD2E3CF8B-low.svg Figure 5-1 INA191 YFD Package6-Pin DSBGA Top View
Table 5-1 Pin Functions (INA191)
PIN TYPE DESCRIPTION
NAME NO.
ENABLE B3 Digital input Enable pin. When this pin is driven to VS, the device is on and functions as a current sense amplifier. When this pin is driven to GND, the device is off, the supply current is reduced, and the output is placed in a high-impedance state. This pin must be driven externally, or connected to VS if not used.
GND B2 Analog Ground.
IN+ A1 Analog input Current-shunt monitor positive input. For high-side applications, connect this pin to the bus voltage side of the sense resistor. For low-side applications, connect this pin to the load side of the sense resistor.
IN– B1 Analog input Current-shunt monitor negative input. For high-side applications, connect this pin to the load side of the sense resistor. For low-side applications, connect this pin to the ground side of the sense resistor.
OUT A3 Analog output This pin provides an analog voltage output that is the amplified voltage difference from the IN+ to the IN– pins.
VS A2 Analog Power supply, 1.7 V to 5.5 V.
GUID-20210104-CA0I-HH6C-B8TM-1HM7ZZLVNCKR-low.gif Figure 5-2 INA2191 YBJ Package12-Pin DSBGATop View
Table 5-2 Pin Functions (INA2191)
PIN TYPE DESCRIPTION
NAME NO.
ENABLE1 B2 Digital input Enable pin for output 1. When this pin is driven to VS, channel 1 is on and functions as a current sense amplifier. When both enable pins are driven to GND, the device is off and the supply current is reduced. This pin must be driven externally, or connected to VS if not used.
ENABLE2 C2 Digital input Enable pin for output 2. When this pin is driven to VS, channel 2 is on and functions as a current sense amplifier. When both enable pins are driven to GND, the device is off and the supply current is reduced. This pin must be driven externally, or connected to VS if not used.
GND D2 Analog Ground.
IN+1 A1 Analog input Current-shunt monitor positive input for channel 1. For high-side applications, connect this pin to the bus voltage side of the sense resistor. For low-side applications, connect this pin to the load side of the sense resistor.
IN+2 D1 Analog input Current-shunt monitor positive input for channel 2. For high-side applications, connect this pin to the bus voltage side of the sense resistor. For low-side applications, connect this pin to the load side of the sense resistor.
IN–1 B1 Analog input Current-shunt monitor negative input for channel 1. For high-side applications, connect this pin to the load side of the sense resistor. For low-side applications, connect this pin to the ground side of the sense resistor.
IN–2 C1 Analog input Current-shunt monitor negative input for channel 2. For high-side applications, connect this pin to the load side of the sense resistor. For low-side applications, connect this pin to the ground side of the sense resistor.
OUT1 A3 Analog output This pin provides an analog voltage output that is the amplified voltage difference from the IN+1 to the IN–1 pins, and is offset by the voltage applied to the REF1 pin.
OUT2 D3 Analog output This pin provides an analog voltage output that is the amplified voltage difference from the IN+2 to the IN–2 pins, and is offset by the voltage applied to the REF2 pin.
REF1 B3 Analog input Reference input for channel 1. Enables bidirectional current sensing for channel 1 with an externally applied voltage.
REF2 C3 Analog input Reference input for channel 2. Enables bidirectional current sensing for channel 2 with an externally applied voltage.
VS A2 Analog Power supply, 1.7 V to 5.5 V.
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