EVAL-CN0187-SDPZ Analog Devices Inc, EVAL-CN0187-SDPZ Datasheet

EVAL-CN0187-SDPZ

Manufacturer Part Number

EVAL-CN0187-SDPZ

Description

BOARD, EVAL, FOR CN0187

Manufacturer

Analog Devices Inc

Series

-r

Datasheet

1.EVAL-CN0187-SDPZ.pdf (7 pages)

Specifications of EVAL-CN0187-SDPZ

Rohs Compliant

YES

Svhc

No SVHC (15-Dec-2010)

Main Purpose

Measurement, RF Power

Embedded

Utilized Ic / Part

ADA4891-4, ADL5502, ADP121, AD7266

Primary Attributes

Secondary Attributes

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

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EVALUATION AND DESIGN SUPPORT

Circuit Evaluation Boards

Design and Integration Files

Rev.0

Circuits from the Lab™ circuits from Analog Devices have been designed and built by Analog Devices

engineers. Standard engineering practices have been employed in the design and construction of

each circuit, and their function and performance have been tested and verified in a lab environment at

room temperature. However, you are solely responsible for testing the circuit and determining its

suitability and applicability for your use and application. Accordingly, in no event shall Analog Devices

be liable for direct, indirect, special, incidental, consequential or punitive damages due to any cause

whatsoever connected to the use of any Circuits from the Lab circuits. (Continued on last page)

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

System Demonstration Platform (EVAL-SDP-CB1Z)

Schematics, Layout Files, Bill of Materials

Figure 1. High Speed, Low Power, Crest Factor, Peak, and RMS Power Measurement System (Simplified Schematic: All connections and Decoupling Not Shown)

1000pF

RFIN

Crest Factor, Peak, and RMS RF Power Measurement Circuit Optimized for

0.01µF

0.1µF

+3.3V

0.01µF

75Ω

+5.5V

0.01µF

FLTR

1µF

Circuits from the Lab™ reference circuits are engineered and

tested for quick and easy system integration to help solve today’ s

analog, mixed-signal, and RF design challenges. For more

information and/or support, visit www.analog.com/CN0187.

FLTR

VPOS

RFIN

ADL5502

High Speed, Low Power, and Single 3.3 V Supply

COMM

ENBL

VIN

ADP121

VRMS

PEAK

CNTL

GND

VOUT

NOTE: U2 AND U3 ARE ADA4891-4

CONTROL

(HIGH RESET;

LOW PEAK HOLD)

*SEE TEXT

1µF

+3.3V

U2-B

U3-B

442Ω

0.47µF

442Ω

+1.25V

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

CIRCUIT FUNCTION AND BENEFITS

The circuit shown in Figure 1 measures peak and rms power

at any RF frequency from 450 MHz to 6 GHz over a range of

approximately 45 dB. The measurement results are converted

to differential signals in order to eliminate noise and are

provided as digital codes at the output of a 12-bit SAR ADC

with serial interface and integrated reference. A simple two-

point calibration is performed in the digital domain.

U2-A

U2-D

U3-A

U3-D

U3-A

U3-D

220Ω

10kΩ

+3.3V

Devices Connected/Referenced

ADL5502

AD7266

ADA4891-4

ADP121

U2-C

U3-C

27Ω

450 MHz to 6 GHz Crest Factor Detector

Differential/Single-Ended Input, Dual,

Simultaneous Sampling, 2 MSPS, 12-Bit,

3-Channel SAR Analog-to-Digital Converter

Low Cost, Quad, CMOS, High Speed, Rail-to-

Rail Amplifier

150 mA, Low Quiescent Current, CMOS Linear

Regulator in 5-Lead TSOT or 4-Ball WLCSP

+2.5V

0.47µF

VA1

VA2

VB1

VB2

AGND

AVDD DVDD

+3.3V

CAP

AD7266

VDRIVE

DOUTA

+3.3V

SCLK

DGND

Circuit Note

www.analog.com

SUPPORT

CIRCUITS

BOARD

SDP

AND

CN-0187

Related parts for EVAL-CN0187-SDPZ

EVAL-CN0187-SDPZ Summary of contents

Page 1

... Crest Factor, Peak, and RMS RF Power Measurement Circuit Optimized for High Speed, Low Power, and Single 3.3 V Supply EVALUATION AND DESIGN SUPPORT Circuit Evaluation Boards CN-0187 Circuit Evaluation Board (EVAL-CN0187-SDPZ) System Demonstration Platform (EVAL-SDP-CB1Z) Design and Integration Files Schematics, Layout Files, Bill of Materials +3 ...

Page 2

CN-0187 The ADL5502 is a mean-responding (true rms) power detector in combination with an envelope detector to accurately determine the crest factor (CF modulated signal. It can be used in high frequency receiver and transmitter signal chains from ...

Page 3

Circuit Note Typical measured performance characteristics of the circuit are presented in Figure 2 through Figure 0.1 0.01 –25 –20 –15 –10 –5 INPUT (dBm) Figure 2. Measured VRMS Output vs. Input Level (Log Scale), 450 MHz, ...

Page 4

CN-0187 400mV rms RF INPUT 250mV rms 160mV rms 70mV rms 1ms/DIV Figure 7. Output Response to Various RF Input Pulse Levels, Supply 3 V, 900 MHz Frequency, Square-Domain Filter Open, Output Filter 0.1 μF with Parallel 1 kΩ The ...

Page 5

... GHz (see CN-0150 CIRCUIT EVALUATION AND TEST This circuit uses the EVAL-CN0187-SDPZ circuit board and the EVAL-SDP-CB1Z System Demonstration Platform (SDP) evaluation board. The two boards have 120-pin mating connectors, allowing for the quick setup and evaluation of the ...

Page 6

... 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 Support Package. Setup Connect the 120-pin connector on the EVAL-CN0187-SDPZ circuit board to the connector marked “ ...

Page 7

Circuit Note REVISION HISTORY 4/11—Revision 0: Initial Version (Continued from first page) Circuits from the Lab circuits are intended only for use with Analog Devices products and are the intellectual property of Analog Devices or its licensors. While you may ...

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