HMC288MS8_08 Datasheet, PDF (5/6 Pages) Hittite Microwave Corporation – 2 dB LSB GaAs MMIC 3-BIT DIGITAL ATTENUATOR, 0.7 - 3.7 GHz

v01.0705
5
Evaluation Circuit Board
HMC288MS8 / 288MS8E
2 dB LSB GaAs MMIC 3-BIT DIGITAL
ATTENUATOR, 0.7 - 3.7 GHz
* R2 = R3 = R4 = 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 103143 ^[1]
Item
J1 - J2
J3 - J6
R1
R2, R3, R4
C1, C2
Description
PCB Mount SMA Connector
DC Pin
5k Ohm Resistor, 0402 Chip
100 Ohm Resistor, 0402 Chip
0402 Chip Capacitor, Select for Lowest Fre-
quency of Operation
The circuit board used in the final application should
use RF circuit design techniques. Signal lines
should have 50 ohm impedance while the pack-
age 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 cir-
U1
PCB ^[2]
HMC288MS8 / HMC288MS8E
Digital Attenuator
103141 Evaluation PCB 1.5” x 1.5”
cuit board as shown is available from Hittite Micro-
wave Corporation upon request.
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
5 - 38
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