Analog Devices AD8338-EVALZ User Manual
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Analog Devices AD8338-EVALZ User Manual

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One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com

FEATURES

Full featured evaluation board for the
On-board voltage regulator
On-board potentiometers for direct adjustment, with test
points for electronic adjustment
All analog design, no software needed

EVALUATION KIT CONTENTS

AD8338-EVALZ
evaluation board
AD8338-EVALZ
user guide (UG-559)

ADDITIONAL EQUIPMENT NEEDED

A signal generator
A power supply capable of 6 V to 20 V output
An oscilloscope with a 100 MHz minimum bandwidth
3 SMA (M) to BNC (M) cables

ONLINE RESOURCES

AD8338
data sheet
UG-559
user guide
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Arrow.com.
Downloaded from
Evaluating the
AD8338
AD8338
AD8338-EVALZ
EVALUATION BOARD
Figure 1.
Rev. B | Page 1 of 8
Evaluation Board User Guide
Low Power VGA

GENERAL DESCRIPTION

This user guide describes the
AD8338
discusses common configurations. The design of this board
(AD8338-EVALZ) emphasizes simplicity and ease of use,
which is evident in the minimalist approach to connector
implementation.
The
AD8338
data sheet, available at www.analog.com, covers
the details for the operation of the AD8338. The
sheet should be consulted in conjunction with this user guide.
The data sheet not only assists designers in their end
applications but also provides important information to
understand the operation of the
especially its initial configuration and power up.
UG-559
evaluation board and
AD8338
data
AD8338
evaluation board,

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Summary of Contents for Analog Devices AD8338-EVALZ

  • Page 1: Features

    On-board voltage regulator discusses common configurations. The design of this board On-board potentiometers for direct adjustment, with test (AD8338-EVALZ) emphasizes simplicity and ease of use, points for electronic adjustment which is evident in the minimalist approach to connector All analog design, no software needed implementation.

  • Page 2: Table Of Contents

    Online Resources ................1 Modes and Input and Output Signals .........4 General Description ................. 1 Default Operation and Jumper Selection Settings ....4 AD8338-EVALZ Evaluation Board ..........1 Evaluation Board Schematic ............6 Revision History ................2 Ordering Information ...............7 Evaluation Board Quick Start Procedures ........3 Bill of Materials ................7...

  • Page 3: Evaluation Board Quick Start Procedures

    Manually adjust gain by adjusting the GAIN ADJ AD8338 evaluation board needs only a few external potentiometer. If these work, then basic operation of the connections. Setting up this board for the first time requires AD8338-EVALZ is verified. the following: CONFIGURING FOR SINGLE-ENDED INPUT, •...

  • Page 4: Changes To The Modes And Input And Output Signals Section

    45 Ω (a VSWR match of 1.1:1). INPUT CONTROLS Output Signals AD8338-EVALZ has two primary input controls, GAIN AD8338 outputs swing nearly up to 1.5 V relative to VREF, ADJUST and AGC SET (see Figure 1).

  • Page 5: Changes To Power Supplies Section

    Evaluation Board User Guide UG-559 Configuration for Decreasing Gain with Increasing Configuration for Using AGC Loop Voltage on GAIN Pin For the application of the AGC loop, set MODE on the AD8338 Figure 5 shows the basic connections of the evaluation board. to high.

  • Page 6: Changes To Figure 6

    UG-559 Evaluation Board User Guide EVALUATION BOARD SCHEMATIC Figure 7. Schematic Rev. B | Page 6 of 8 Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from...

  • Page 7: Ordering Information

    R5, R6 49.9 Ω resistor, 0603 KOA Speer RK73H1JTTD49R9F 499 Ω resistor, 0603 Vishay CRCW0603499RFKEA Analog Devices, Inc. AD8338ACPZ-R7 AD8338, low power, 80 dB VGA, low frequency to 18 MHz Low power, low distortion ADC driver Analog Devices ADA4940-1ARZ 4 V to 28 V input LDO, 50 mA output, 5 V...
  • Page 8 (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc.

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