HMC539LP3 Datasheet, PDF (5/6 Pages) Hittite Microwave Corporation – 0.25 dB LSB GaAs MMIC 5-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, DC - 4.0 GHz

HMC539LP3 / 539LP3E
v00.0605
0.25 dB LSB GaAs MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 4.0 GHz
6
Pin Descriptions
Pin Number
Function
1
Vdd
2, 11
RF1, RF2
3, 9, 10
4-8
N/C
ACG1 - ACG5
Description
Supply Voltage.
This pin is DC coupled and matched to 50 Ohm.
Blocking capacitors are required.
Select value based on lowest frequency of operation.
These pins should be connected to PCB RF ground to
maximize performance.
External capacitor to ground is required. Select value for
lowest frequency of operation. Place capacitor as close
to pins as possible.
Interface Schematic
12 - 16
V1 - V5
See truth table and control voltage table.
GND
Package bottom has an exposed metal paddle that must be
connected to RF Ground.
Application Circuit
Recommended Component Values
C1, C2
100 pF ± 10%
C3
1,000 pF ± 10%
C4
330 pF ± 10%
R1 - R5
100 Ohm ± 10%
6 - 168
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