SBOU316A September   2024  – June 2025 INA630

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 EVM General Overview
    2. 2.2 Setup and Connections
    3. 2.3 Power Requirements
    4. 2.4 Jumper and Vref Input Information
    5. 2.5 Test Points
    6. 2.6 Adjusting INA630 Gain
  9. 3Hardware Design Files
    1. 3.1 Schematics
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials (BOM)
  10. 4Additional Information
    1. 4.1 Trademarks
  11. 5Revision History

2.1 EVM General Overview

The INA630 is a monolithic precision instrumentation amplifier that incorporates an indirect current-feedback architecture. The gain is set by the ratio of two external resistors for a gain range of 20V/V to 1000V/V. The ratio gain set method allows for very low gain drift when a TC matched resistor network is used. The device has high precision as a result of super-beta input transistors, which provide low input offset voltage, offset voltage drift, input voltage noise, and current noise. The indirect current feedback architecture offers low gain error and non-linearity and the reference pin impedance does not degrade the common-mode rejection (CMRR) performance. For a full list of electrical characteristics for the INA630, see the INA630 Precision, Low-Power, Indirect Current Feedback Instrumentation Amplifier data sheet.

Figure 3-1 shows the full schematic of the INA630EVM. The components marked with a red X are optional and not installed. The purpose of these components is explained in subsequent sections of this document.