SBAU489 June   2025 AMC23C15 , AMC3302

 

  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 Hardware Overview
    2. 2.2 Assembly Instructions
    3. 2.3 Interfaces
      1. 2.3.1 Analog Input
      2. 2.3.2 Digital Interface
    4. 2.4 Power Requirements
      1. 2.4.1 AVDD Input
      2. 2.4.2 DVDD Input
    5. 2.5 Test Points
    6. 2.6 Lug Information
    7. 2.7 Best Design Practices
  9. 3Implementation Results
    1. 3.1 Evaluation Procedure
      1. 3.1.1 Equipment Setup
      2. 3.1.2 Test Procedure
      3. 3.1.3 Full Signal Chain Evaluation Procedure
    2. 3.2 Performance Data and Results
      1. 3.2.1 Shunt Selection Calculations
      2. 3.2.2 Filter Selection
      3. 3.2.3 Thermal Results
  10. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  11. 5Additional Information
    1. 5.1 Trademarks
  12. 6Related Documentation

2.3.1 Analog Input

Figure 2-2 shows the analog input circuit for the AMC-MOD-50A-EVM.

The input is supplied through the high current input lugs at J2 (IN+) and J5 (IN−). The input current is sensed through shunt resistor R8 and carried into the analog inputs of the AMC1306M05. R7 is unpopulated by default configuration. The AMC1306M05 input is accessible to the user through test points INP and INN.

For the AMC3302 input, the passive components R3, R5, and C7 make a differential antialiasing filter with a cutoff frequency of 497kHz. Capacitors C8 and C9 help attenuate common-mode signals. C2 and C5 serve as decoupling capacitors for noise reduction and high-side power supply (AVDD) stability.

The adjustable output LDO, TLV709A01DBVR, circuitry includes resistors R1 and R2 to set the output voltage at 3.3V. Capacitors C1 and C2 counteract reactive input sources and improve transient responses.

AMC-MOD-50A-EVM AMC-MOD-50A-EVM Analog Input Figure 2-2 AMC-MOD-50A-EVM Analog Input