HMC539LP3 Datasheet, PDF (3/6 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
Worst Case Step Error
Between Successive Attenuation States
6
0.25
0.2
0.15
0.1
0.05
0
-0.05
-0.1
-0.15
-0.2
-0.25
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
FREQUENCY (GHz)
Bias Voltage & Current
Vdd = +5.0 Vdc ± 10%
Vdd
(VDC)
Idd (Typ.)
(mA)
+4.5
3.3
+5.0
3.5
+5.5
3.7
Control Voltage
State
Low
High
Note: Vdd = +5V
Bias Condition
0 to +0.8V @ -5 uA Typ.
+2.0 to + 5.0 Vdc @ 30 uA Typ.
Truth Table
V1
4 dB
Control Voltage Input
V2
2 dB
V3
1 dB
V4
0.5 dB
V5
0.25 dB
Attenuation
State
RF1 - RF2
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.
6 - 166
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