SBOS558C April   2011  – April 2016 INA200-Q1 , INA201-Q1 , INA202-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and 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: Current-Shunt Monitor
    6. 7.6 Electrical Characteristics: Comparator
    7. 7.7 Electrical Characteristics: General
    8. 7.8 Typical Characteristics
  8. 8 Parameter Measurement Information
    1. 8.1 Hysteresis
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Comparator
      2. 9.3.2 Output Voltage Range
    4. 9.4 Device Functional Modes
  10. 10Application Information
    1. 10.1 Application Information
      1. 10.1.1 Basic Connections
      2. 10.1.2 Selecting RS
      3. 10.1.3 Input Filtering
      4. 10.1.4 Accuracy Variations as a Result of VSENSE and Common-Mode Voltage
        1. 10.1.4.1 Normal Case 1: VSENSE ≥ 20 mV, VCM ≥ VS
        2. 10.1.4.2 Normal Case 2: VSENSE ≥ 20 mV, VCM < VS
        3. 10.1.4.3 Low VSENSE Case 1: VSENSE < 20 mV, -16 V ≤ VCM < 0 V; and Low VSENSE Case 3: VSENSE < 20 mV, VS < VCM ≤ 80 V
        4. 10.1.4.4 Low VSENSE Case 2: VSENSE < 20 mV, 0 V ≤ VCM ≤ VS
      5. 10.1.5 Transient Protection
    2. 10.2 Typical Applications
      1. 10.2.1 Low-Side Switch Overcurrent Shutdown
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
        3. 10.2.1.3 Application Curves
      2. 10.2.2 High-Side Switch Overcurrent Shutdown
      3. 10.2.3 Bidirectional Overcurrent Comparator
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Related Links
    2. 13.2 Community Resources
    3. 13.3 Trademarks
    4. 13.4 Electrostatic Discharge Caution
    5. 13.5 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

9 Detailed Description

9.1 Overview

The INA20x-Q1 current-shunt monitors operate over a wide common-mode voltage range (–16 V to +80 V). These devices integrate an open-drain comparator with an internal 0.6-V reference at the negative input. Use external dividers from the output of the current shunt monitor to the positive input of the comparator to set the positive input for overcurrent detection. The comparator includes a latching capability, but can also be made transparent by grounding (or floating) the RESET pin.

9.2 Functional Block Diagram

INA200-Q1 INA201-Q1 INA202-Q1 block_diag_sbos558.gif

9.3 Feature Description

9.3.1 Comparator

The INA200-Q1, INA201-Q1, and INA202-Q1 devices incorporate an open-drain comparator. This comparator typically has 2 mV of offset and a 1.3 μs (typical) response time. The RESET pin latches and resets the output of the comparator; see Figure 26.

INA200-Q1 INA201-Q1 INA202-Q1 ai_comp_latch_bos374.gif Figure 26. Comparator Latching Capability

9.3.2 Output Voltage Range

The output of the INA20x-Q1 is accurate within the output voltage swing range set by the power supply pin, VS. Best illustration of this performance occurs when using the INA202-Q1 (gain-of-100 version), where a 100-mV full-scale input from the shunt resistor requires an output voltage swing of 10 V, and a power-supply voltage sufficient to achieve 10 V on the output.

9.4 Device Functional Modes

The INA20x-Q1 have a single functional mode and are operational when the power-supply voltage is greater than 2.7 V. The common-mode voltage must be between –16 V and +80 V. The maximum power supply voltage for the INA20x-Q1 is 18 V.