HMC472LP4 / 472LP4E
v06.1108
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 3.8 GHz
Pin Descriptions
Pin Number
1, 3, 5, 12,
14, 16, 17, 18
2
Function
N/C
Vdd
Description
These pins should be connected to PCB RF ground to
maximize performance.
Supply Voltage.
This pin is DC coupled and matched to 50 Ohm.
Blocking capacitors are required. Select value based on
lowest frequency of operation.
External capacitors to ground are recommended for low and
high frequency operation. Select value for
lowest frequency of operation. Place capacitor as close
to pins as possible. For operation from 700 to 2700 MHz,
these pins may be left unconnected.
Interface Schematic
5
ATTENUATORS - DIGITAL - SMT
5 - 145
4, 15
RF1, RF2
6 - 11, 13
ACG1 - ACG7
19 - 24
V1 - V6
See truth table and control voltage table.
GND
Package bottom has an exposed metal paddle that must also
be connected to RF/DC Ground.
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 ]
