HMC425LP3
/
425LP3E
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz
v03.0409
Evaluation PCB
5
ATTENUATORS - DIGITAL - SMT
5 - 121
* R1 - R6 = 100 Ohm.
These resistors are optional
and may be used to enhance
decoupling of the RF path
from the control inputs.
List of Materials for Evaluation PCB 105408
[1]
Item
J1 - J2
J3
C1
C2, C3
R1 - R6
U1
PCB
[2]
Description
PCB Mount SMA Connector
8 Pin DC Connector
0.01 μF Capacitor, 0603 Pkg.
100 pF Capacitor, 0402 Pkg.
100 Ohm Resistor, 0603 Pkg.
HMC425LP3 / HMC425LP3E Digital Attenuator
105260 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
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 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.
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
HITTITE [ HITTITE MICROWAVE CORPORATION ]
