For price, delivery, and to place orders, please contact Hittite Microwave Corporation:

20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

Order On-line at www.hittite.com

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Evaluation Circuit Board

The circuit board used in the application should use

RF circuit design techniques. Signal lines should

have 50 Ohm impedance while the package ground

leads and exposed ground paddle should be con-

nected directly to the ground plane similar to that

shown below.

A sufficient number of via holes

should be used to connect the top and bottom

ground planes.

The evaluation circuit board as

shown is available from Hittite Microwave Corpora-

tion upon request.

Item

Description

J1 - J2

PCB Mount SMA Connector

J3

2 mm Molex Header

C1, C2

100 pF Capacitor, 0402 Pkg.

C3

0.01 μF Capacitor, 0402 Pkg.

R1

5k Ohm Resistor, 0402 Pkg.

U1

HMC271LP4(E) Digital Attenuator

108780 Evaluation PCB

[1] Reference this number when ordering complete evaluation PCB

[2] Circuit Board Material: Rogers 4350

HMC271LP4 / 271LP4E

v03.0809

1 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz