SBOSAI9B December   2023  – March 2024 INA500

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  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 - INA500A
    6. 6.6 Electrical Characteristics - INA500B
    7. 6.7 Electrical Characteristics - INA500C
    8. 6.8 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 Gain Options and Resistors
        1. 7.3.1.1 Gain Error and Drift
      2. 7.3.2 Input Common-Mode Voltage Range
      3. 7.3.3 EMI Rejection
      4. 7.3.4 Typical Specifications and Distributions
      5. 7.3.5 Electrical Overstress
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Reference Pin
    2. 8.2 Typical Applications
      1. 8.2.1 Battery Monitoring using Difference Amplifier
        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 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Development Support
        1. 9.1.1.1 PSpice® for TI
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DBV|6
  • DCK|6
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.3.2 Input Common-Mode Voltage Range

The INA500 difference-amplifier rejects the input common mode. The rejection capability is based on the matching of the internal resistors. The input voltage range of the INA500 is primarily dictated by the signal swing at the op-amp inputs. The INA500 input common-mode voltage range can extend well beyond the supply rails and is a major function of the gain configuration. To maximize performance, it is critical to keep the op-amp inside the INA500 within the linear range for a given combination of gain, reference voltage, and input common-mode voltage for a particular input differential voltage and output swing.

Input common-mode voltage (VCM) vs output voltage graphs (VOUT) in this section outlines the linear performance region of the INA500 for a particular combination of gain and reference voltage values. A good common-mode rejection can be expected when operating with in the limits of the VCM versus VOUT graph. The common-mode range for the INA500 in equation form is outlined in the Electrical Characteristics for each gain. The most common operating conditions are outlined graphically in the Typical Characteristics section. Figure 7-79 shows the region of operation where a minimum of 75dB CMRR can be achieved. This is referred as the high CMRR region. Figure 7-80 has much wider region of operation with a lower CMRR of 62dB minimum. This is because the input signal crosses over the transition region of the input pairs to achieve rail-to-rail operation.

GUID-20231215-SS0I-MPHJ-CHH6-BSRJ9759CQ5X-low.gif
V+ = 5.5V V– = 0V G = 1 VREF = 0V
Figure 7-2 Input Common-Mode Voltage vs Output Voltage (High CMRR Region)
GUID-20231215-SS0I-TX0S-9FWB-Q4WW057ZKQDL-low.gif
V+ = 5.5V V– = 0V G = 1 VREF = 0V
Figure 7-3 Input Common-Mode Voltage vs Output Voltage