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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

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 as shown is available from

Hittite Microwave Corporation upon request.

* R2 = R3 = 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 - J6

DC Pin

R1

5k Ohm Resistor, 0402 Chip

R2, R3

100 Ohm Resistor, 0402 Chip

C1, C2

0402 Chip Capacitor, Select for Lowest

Frequency of Operation

U1

HMC290 / HMC290E Digital Attenuator

103370 Evaluation PCB 1.5” x 1.5”

[1] Reference this number when ordering complete evaluation PCB

[2] Circuit Board Material: Rogers 4350

2 dB LSB GaAs MMIC 2-BIT DIGITAL

ATTENUATOR, 0.7 - 4.0 GHz

v01.0605