HMC425LP3_09 Datasheet, PDF (6/6 Pages) Hittite Microwave Corporation – 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz

Evaluation PCB
HMC425LP3 / 425LP3E
v03.0409
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz
5
* 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
Description
J1 - J2
PCB Mount SMA Connector
J3
8 Pin DC Connector
C1
0.01 μF Capacitor, 0603 Pkg.
C2, C3
100 pF Capacitor, 0402 Pkg.
R1 - R6
100 Ohm Resistor, 0603 Pkg.
U1
HMC425LP3 / HMC425LP3E Digital Attenuator
PCB ^[2]
105260 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
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.
[2] Circuit Board Material: Rogers 4350
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order On-line at www.hittite.com
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