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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
5
5 - 147
Evaluation PCB
The circuit board used in the fi nal application should
use RF circuit design techniques. Signal lines
should have 50 ohm impedance while the package
ground leads and exposed paddle should be con-
nected 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.
List of Materials for Evaluation PCB 107010
 [1]
Item
Description
J1 - J2
PCB Mount SMA Connector
J3
14 Pin DC Connector
C1
1000 pF Capacitor, 0603 Pkg.
C2, C3
1000 pF Capacitor, 0402 Pkg.
C4 - C7
330 pF Capacitor, 0402 Pkg.
U1
HMC472LP4 / HMC472LP4E
Digital Attenuator
PCB
[2]
106977 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
HMC472LP4 / 472LP4E
v06.1108
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz
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