For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824

Phone: 978-250-3343

Fax: 978-250-3373

Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

7

HMC939LP4 / 939LP4E

v01.1211

1.0 dB LSB GaAs MMIC 5-BIT DIGITAL

ATTENUATOR, 0.1 - 33 GHz

Evaluation PCB

Item

Description

J1, J2, J4, J5

2.9 mm PC Mount RF Connector

J3

DC Connector

C1, C2

1000 pF Capacitor, 0402 Pkg.

u1

HMC939LP4 Digital Attenuator

131909 Evaluation Board

[1] Reference this number when ordering complete evaluation PCB

[2] Circuit Board Material: Rogers 4350

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 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.