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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
Truth Table
Control Voltage
Bias Voltage & Current
Worst Case Step Error
Between Successive Attenuation States
Vdd = +5.0 Vdc ?10%
Vdd
(VDC)
Idd (Typ.)
(mA)
+4.5
3.3
+5.0
3.5
+5.5
3.7
State
Bias Condition
Low
0 to +0.8V @ -5 uA Typ.
High
+2.0 to + 5.0 Vdc @ 30 uA Typ.
Note: Vdd = +5V
Control Voltage Input
Attenuation
State
RF1 - RF2
V1
4 dB
V2
2 dB
V3
1 dB
V4
0.5 dB
V5
0.25 dB
High
High
High
High
High
Reference
I.L.
High
High
High
High
Low
0.25 dB
High
High
High
Low
High
0.5 dB
High
High
Low
High
High
1 dB
High
Low
High
High
High
2 dB
Low
High
High
High
High
4 dB
Low
Low
Low
Low
Low
7.75 dB
Any combination of the above states will provide an attenuation
approximately equal to the sum of the bits selected.
-0.25
-0.15
-0.05
0.05
0.15
0.25
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
FREQUENCY (GHz)
HMC539LP3 / 539LP3E
0.25 dB LSB GaAs MMIC 5-BIT DIGITAL
POSITIVE CONTROL ATTENUATOR, DC - 4 GHz
v00.0605
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