HMC110
MICROWAVE CORPORATION
HMC110
F
EBRUARY
2001
5 - BIT DIGITAL ATTENUATOR DC - 10 GHz
Schematic
A1 B1
A2
A3
A4 B4
A5 B5
RF1
A
TTENUATORS
4dB
1dB
2dB
8dB
16dB
HMC110
GND GND
GND GND
GND GND
GND GND
GND GND
DIE
Absolute Maximum Ratings
Control Voltage Range
Storage Temperature
Operating Temperature
RF Input Power (0.5 - 4 GHz)
Insertion Loss State
Any Attenuation State
+0.5 to -8.5 Vdc
-65 to +150 deg C
-55 to +125 deg C
+27 dBm
+13 dBm
Truth Table
Control Input
4 dB Bit
A1
Hi
B1
Lo
Lo
Lo
Hi
Lo
Lo
1dB
A2
Hi
Lo
Hi
Hi
Hi
Hi
2dB
A3
Hi
Hi
Lo
Hi
Hi
Hi
8dB Bit
A4
Hi
Hi
Hi
Hi
Lo
Hi
B4
Lo
Lo
Lo
Lo
Hi
Lo
16dB Bit
A5
Hi
Hi
Hi
Hi
Hi
Lo
B5
Lo
Lo
Lo
Lo
Lo
Hi
Ref
1dB
2dB
4dB
8dB
16dB
Att
Set
Control Voltages
State
Low
High
Bias Condition
0 to -0.2V@20uA Max
-3V@50uA Typ to -8V@500uA Max
Hi
Hi
Lo
Hi
Hi
Any combination of above states will provide an attenuation
approximately equal to the sum of the bits selected.
12 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Web Site: www.hittite.com
2-4
RF2
2
NEL [ NEL FREQUENCY CONTROLS,INC ]
