ANALOG DEVICES UG-424 Service Manual

Evaluation Board User Guide

UG-424

10785-001

PRIMARY SIDE

NOTES

1. THE EVALUATION BOARD SILKSCREEN PART NUMBER LABE LING ON YOUR BOARD M AY BE DIFFERENT FROM WHAT IS SHOWN HERE .

SECONDARY SIDE

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

Evaluation Board for the ADA4432-1, Video Filter Amplifier

Offered in 6-Lead SOT-23

FEATURES

Fully assembled and tested
Enables quick customer evaluation
Edge-mounted SMA connector provisions
Easy connection to test equipment and other circuits

GENERAL DESCRIPTION

The ADA4432-1BRJ-EBZ evaluation board makes it easy for
designers to quickly observe the performance of the ADA4432-1
video filter in a real-world application. Input signals are applied
through the SMA jack (IN), and output signals are taken from
the SMA jack (OUT). Power is applied through the red +VS test
point. Ground the black GND test point. The ADA4432-1
operates on a single-supply voltage ranging from 2.7 V to 3.6 V
and draws approximately 7 mA.

The evaluation board is configured with an input termination
resistor (R1) of 75 Ω. Choose this resistor to provide the correct
termination or load for the input signal source. For example,
some video encoders use current-mode video digital-to-analog

converter (DAC) outputs that require a 300 Ω load resistance.
In this case, replace R1 with a 300 Ω resistor.

The ADA4432-1BRJ-EBZ evaluation board is configured to drive a
back terminated 150 Ω differential load. A series back-termination
resistor of 75 Ω is installed on the output at R3. If it is different
from 75 Ω, this can be changed to match the actual load
impedance.

The ADA4432-1 can be powered down (disabled) by grounding
the green ENA test point at the top left of the evaluation board.
On the evaluation board, this pin is pulled up to +VS through
the 4.99 kΩ resistor (R6).

Figure 1 shows the evaluation board, component side and circuit
side. Figure 2 shows the evaluation board schematic. The printed
circuit board (PCB) layout pattern for the primary side and
secondary side are shown in Figure 3 and Figure 4, respectively.
The silkscreen pattern for the primary side and secondary side
are shown in Figure 5 and Figure 6, respectively.

DIGITAL PICTURE OF EVALUATION BOARD

Figure 1. ADA4432-1BRJ-EBZ Component Side and Circuit Side of PCB

PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.

Rev. 0 | Page 1 of 4

UG-424 Evaluation Board User Guide

TABLE OF CONTENTS

Features .............................................................................................. 1

General Description ......................................................................... 1

Digital Picture of Evaluation Board ............................................... 1

Revision History ............................................................................... 2

REVISION HISTORY

5/12—Revision 0: Initial Version

Evaluation Board Schematic and Artwork .....................................3

Ordering Information .......................................................................4

Bill of Materials ..............................................................................4

Rev. 0 | Page 2 of 4