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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

v00.0905

Evaluation Circuit Board

The circuit board used in the final application should

use RF circuit design techniques. Signal lines should

have 50 ohm impedance while the package ground

leads should be connected directly to the ground

plane similar to that shown. A sufficient number of

via holes should be used to connect the top and

bottom ground planes. The evaluation circuit board

shown is available from Hittite upon request.

* R2 - R6= 100 Ohm.

These resistors are optional

and may be used to enhance

decoupling of the RF path

from the control inputs.

Item

Description

J1 - J2

PCB Mount SMA Connector

J3 - J8

DC Pin

R1

5k Ohm Resistor, 0402 Pkg.

R2 - R6

100 Ohm Resistor, 0402 Pkg.

C1 - C2

0402 Chip Capacitor, Select Value for Lowest

Frequency

U1

HMC603MS10 / HMC603MS10E

Digital Attenuators

112746 Evaluation PCB

[1] Reference this number when ordering complete evaluation PCB

[2] Circuit Board Material: Rogers 4350

0.5 dB LSB GaAs MMIC 5-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, 0.7 - 3.8 GHz