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Table of Contents

Evaluating the ADRF6850 100 MHz to 1000 MHz Integrated Broadband Receiver

Preface

This user guide describes both the hardware and software setup needed to evaluate ADRF6850 integrated broadband receiver using ADRF6850-EVALZ and the SDP-S controller board developed by Analog Devices.

Typical Setup

Figure 1. ADRF6850 Evaluation Setup

Tip: Click on any picture in this guide to open an enlarged version.

Helpful Files

  • Data Sheet: ADRF6850
  • Schematics:
  • Bill of Materials:
  • PCB Gerber Files:
  • PCB Layout:

Software Needed

Labview-based Controller Software (runs on PC with Windows 10 or earlier version Windows OS)

Hardware Needed

  • ADRF6850-EVALZ Board
  • SDP-S (EVAL-SDP-CS1Z) Board which comes with USB A to mini-B cable
  • Windows P.C. with ADRF6850 Software
  • 3.3Vdc 0.5A Power Supply
  • 0V Power Supply (or short VGAIN test point to GND)
  • Spectrum Analyzer (to observe 20MHz tone)
  • High-Frequency Signal Generator (to output 520MHz at 0dBm level)
  • 50Ω SMA termination
  • 2 SMA Cables

Quick Start Guide

Evaluation Software Installation

  1. Extract the ADRF6850_USB_v1_Installer zip file.
  2. Inside the folders, run setup.exe.
  3. Follow all prompts to install.
  4. Default install destination is C:\Program Files (x86)\ADRF6850_USB\
  5. Run the executable either from a shortcut or by going to the location specified above and run the .exe file.

Figure 2. ADRF6850 Evaluation Software

Board Testing

  1. Make sure that J21 is connected by default. Refer to Figure 3 below:

    Figure 3. ADRF6850 Evaluation Setup

  2. Attach the SDP-S board on the evaluation board then connect SDP-S to PC via USB. See Figure 1.
  3. Connect J2 (IBBP RF OUT) to the input of a spectrum analyzer. Connect the 50Ω termination to J3. Set up the analyzer as follows:
    • Ref: 0 dBm
    • Center Freq.: 20 MHz
    • Freq. Span: 5 MHz
    • RBW and VBW: 100 KHz
    • Attn.: 30 dB (adjust until noise floor like in Figure 4 is achieved)
  4. Connect a high-frequency signal generator to J9 (RF IN). Set the signal generator output to 520 MHz and 0 dBm, then enable the output.
  5. Connect 3.3V 0.5A supply to VCC and GND test points then 0V VGAIN. Enable the supplies. The 3.3V supply should be sourcing current between 110 mA and 135 mA.
  6. Run the evaluation software on PC. Refer to Figure 2.
    1. Click “Select SPI Mode” (top left).
    2. Click “Write Default Settings” (just to the right of above button). The +3.3V current should increase to between 310 mA and 380 mA.
    3. Set “LO Frequency” to 540MHz and click “Program LO Frequency”.
  7. A tone at 20MHz with a level of -2 dBm to -4 dBm should appear on the spectrum analyzer. The tone should be steady at a frequency of 20MHz. Refer to the screenshot in Figure 4.

    Figure 4. IBBP Output Spectral Plot at IF = 20 MHz

resources/eval/sdp/eval-adrf6850.1642597186.txt.gz · Last modified: 19 Jan 2022 13:59 by Shine Cabatan

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