HMC681LP5 Datasheet, PDF (5/10 Pages) Hittite Microwave Corporation – 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL VARIABLE GAIN AMPLIFIER w/ SERIAL CONTROL, DC - 1 GHz

12
HMC681LP5 / 681LP5E
v03.1010
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL VARIABLE
GAIN AMPLIFIER w/ SERIAL CONTROL, DC - 1 GHz
350 to 1000 MHz Tuning
Relative Phase vs. Frequency
(Only Major States are Shown)
60
31.5 dB
40
16 dB
8 dB
20
0
0.5 - 4 dB
-20
-40
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
Output P1dB
(Major States shown are IL through 16 dB)
24
22
I.L.
20
18
16 dB
16
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
Power-Up States
If LE is set to logic LOW at power-up, the logic state
of PUP1 and PUP2 determines the power-up state of
the part per PUP truth table. The attenuator latches
in the desired power-up state approximately 200 ms
after power-up.
Power-On Sequence
The ideal power-up sequence is: GND, Vdd, digital
inputs, RF inputs. The relative order of the digital
inputs are not important as long as they are powered
after Vdd / GND
Step Error vs. Frequency
(Only Major States are Shown)
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
0.2
16 dB
32 dB
4, 8 dB
0.4
0.6
0.8
1
FREQUENCY (GHz)
Output IP3 @ 5 dBm Output Power per
Tone (Major States shown are IL through 16 dB)
50
I.L.
40
30
16 dB
20
10
0.2
0.4
0.6
0.8
1
FREQUENCY (GHz)
PUP Truth Table
LE
PUP1
PUP2
0
0
0
0
1
0
0
0
1
0
1
1
Relative Gain Setting
-31.5
-24
-16
Insertion Loss
12 - 5
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