SWRU553A September   2019  – February 2020 AWR1243 , AWR2243

 

  1.   AWRx Cascaded Radar RF Evaluation Module (MMWCAS-RF-EVM)
    1.     Trademarks
    2. 1 Getting Started
      1. 1.1 Introduction
      2. 1.2 EVM Revisions
      3. 1.3 Key Features
      4. 1.4 What is Included
        1. 1.4.1 Kit Hardware Contents
        2. 1.4.2 mmWave Studio and Matlab Post Processing
    3. 2 Hardware Description
      1. 2.1 Block Diagram
      2. 2.2 Attaching the MMWAVCAS-RF-EVM to the MMWAVCAS-DSP-EVM
      3. 2.3 Power Status LED Indicators
      4. 2.4 Reset LED Indicators
      5. 2.5 Connectors
        1. 2.5.1 Host Board Connectors(J4, J5)
        2. 2.5.2 Bench Power Connector(J6)
        3. 2.5.3 20 GHz LO Debug Connector (J3)
        4. 2.5.4 AWR OSC_CLKOUT Debug Header (J2)
        5. 2.5.5 AWR Debug Headers (J1_1, J1_2, J1_3, J1_4)
      6. 2.6 Antennas
        1. 2.6.1 TX and RX Antenna Arrays
        2. 2.6.2 PCB Antenna Element
          1. 2.6.2.1 RX Antenna Element Performance
          2. 2.6.2.2 TX Antenna Element Performance
        3. 2.6.3 Virtual Antenna Array
    4. 3 Design Files and Software Tools
      1. 3.1 Hardware Collateral
      2. 3.2 Software, Development Tools, and Example Codes for MMWCAS-RF-EVM
      3. 3.3 Critical AWRx Setup Notes
        1. 3.3.1 LDO Bypass Requirement
    5. 4 PCB Dimensions and Mounting Information
    6. 5 PCB Storage and Handling Recommendations
    7. 6 References
    8. 7 Regulatory Information
  2.   Revision History

2.5.2 Bench Power Connector(J6)

A separate, 6-pin, Molex Minifit Jr connector provides for the connection of bench 5.0 V power to the MMWAVCAS-RF-EVM. 5.0 V power, GND return and a 5.0 V sense and GND sense path are also provided for a 4-terminal, "Kelvin" connection.

NOTE

The Host Board Connectors, J4, and J5 are the primary 5.0 V power inputs to the MMWCAS-RF-EVM. If this bench power connector, J6, is to be used, an attached host board should ensure that either the J4, J5, 5.0 V nets are being supplied from the same supply sourcing J6, or that the 5.0 V nets on J4 and J5 are open and not providing 5.0 V power to the MMWCAS-RF-EVM.

The MMWCAS-DSP-EVM host board has no method of disconnecting these 5.0 V power nets and therefore it is incompatible with this J6 bench power connector.

WARNING

It is required that any attached host board provide 5.0V power conditioning. No 5.0 V rail protection exists on the MMWAVCAS-RF-EVM design itself. The attached host board is expected to provide reverse polarity protection and turn-on/off transient suppression. This is especially import to note when testing in an automotive alternator/battery powered system.

Table 4. Bench Power Connector (J6)

Pin Number Pin Name Pin Type Pin Description
1 GND_SENSE Power GND return sense path
2 GND Power GND return
3 GND Power GND return
4 SYSTEM_5V0_SENSE Power 5.0V sense path
5 SYSTEM_5V0 Power 5.0V System Power
6 SYSTEM_5V0 Power 5.0V System Power