CN-0187

Circuit Note

Rev. 0| Page 6 of 7

Equipment Needed

• PC with a USB port and Windows® XP or Windows Vista®

(32-bit), or Windows® 7 (32-bit)

• EVAL-CN0187-SDPZ circuit evaluation board

• EVAL-SDP-CB1Z SDP evaluation board

• CN0187 evaluation software

• Power supply: +6 V, or +6 V “wall wart”

• RF signal source

• Coaxial RF cable with SMA connectors

Getting Started

Load the evaluation software by placing the CN0187 Evaluation

Software disc in the CD drive of the PC. Using "My Computer,"

locate the drive that contains the evaluation software disc and

open the Readme file. Follow the instructions contained in the

Readme file for installing and using the evaluation software.

Functional Block Diagram

See Figure 1 of this circuit note for the circuit block diagram,

and the “EVAL-CN0187-SDPZ-SCH” pdf file for the circuit

schematics. This file is contained in the CN0187 Design

Support Package.

Setup

Connect the 120-pin connector on the EVAL-CN0187-SDPZ

circuit board to the connector marked “CON A” on the

EVAL-SDP-CB1Z evaluation (SDP) board. Nylon hardware

should be used to firmly secure the two boards, using the holes

provided at the ends of the 120-pin connectors. Using an

appropriate RF cable, connect the RF signal source to the

EVAL-CN0187-SDPZ board via the SMA RF input connector.

With power to the supply off, connect a +6 V power supply to

the pins marked “+6 V” and “GND” on the board. If available, a

+6 V "wall wart" can be connected to the barrel jack connector

on the board and used in place of the +6 V power supply.

Connect the USB cable supplied with the SDP board to the USB

port on the PC. Note: Do not connect the USB cable to the mini

USB connector on the SDP board at this time.

Test

Apply power to the +6 V supply (or “wall wart”) connected to

EVAL-CN0187-SDPZ circuit board. Launch the evaluation

software and connect the USB cable from the PC to the USB

mini-connector on the SDP board. The software will be able to

communicate to the SDP board if the Analog Devices System

Development Platform driver is listed in the Device Manager.

Once USB communications are established, the SDP board can

now be used to send, receive, and capture serial data from the

EVAL-CN0187-SDPZ board.

The data in this circuit note were generated using a Rohde &

Schwarz SMT-03 RF signal source and an Agilent E3631A

power supply. The signal source was set to the frequencies

indicated in the graphs, and the input power was stepped and

data recorded in 1 dB increments.

Information and details regarding how to use the evaluation

software for data capture can be found in the CN0187

Evaluation Software Readme file.

Information regarding the SDP board can be found in the

SDP User Guide.

LEARN MORE

CN0187 Design Support Package:

http://www.analog.com/CN0187-DesignSupport

SDP User Guide

Ardizzoni, John. A Practical Guide to High-Speed Printed-Circuit-

Board Layout, Analog Dialogue 39-09, September 2005.

CN-0150 Circuit Note, Software-Calibrated, 1 MHz to 8 GHz,

70 dB RF Power Measurement System Using the AD8318

Logarithmic Detector, Analog Devices.

MT-031 Tutorial, Grounding Data Converters and Solving the

Mystery of “AGND” and “DGND”, Analog Devices.

MT-073 Tutorial, High Speed Variable Gain Amplifiers (VGAs),

Analog Devices.

MT-077 Tutorial, Log Amp Basics, Analog Devices.

MT-078 Tutorial, High Speed Log Amps, Analog Devices.

MT-081 Tutorial, RMS-to-DC Converters, Analog Devices.

MT-101 Tutorial, Decoupling Techniques, Analog Devices.

Whitlow, Dana. Design and Operation of Automatic Gain

Control Loops for Receivers in Modern Communications

Systems. Chapter 8. Analog Devices Wireless Seminar. 2006.

Data Sheets and Evaluation Boards

CN-0187 Circuit Evaluation Board (EVAL-CN0187-SDPZ)

System Demonstration Platform (EVAL-SDP-CB1Z)

ADL5502 Data Sheet

ADL5502 Evaluation Board

AD7266 Data Sheet

AD7266 Evaluation Board

ADA4891 Data Sheet