HMC812A_16 Datasheet, PDF (1/9 Pages) Analog Devices – GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, 5 - 30 GHz

HMC812ALC4
v06.1216
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
8
Typical Applications
Features
The HMC812ALC4 is ideal for:
Wide Bandwidth: 5 - 30 GHz
• Point-to-Point Radio
Excellent Linearity: +32 dBm Input IP3
• VSAT Radio
High Power Handling: +25 dBm Input P1dB
• Test Instrumentation
• Microwave Sensors
• Military, ECM & Radar
ELIMINARY ^{Functional Diagram}
Wide Attenuation Range: 30 dB
24 Lead Ceramic 4x4 mm SMT Package: 16mm²
General Description
The HMC812ALC4 is an absorptive Voltage Variable
Attenuator (VVA) which operates from 5 - 30 GHz
and is ideal in designs where an analog DC control
signal must be used to control RF signal levels over a
30 dB amplitude range. It features two shunt-type
attenuators which are controlled by two analog vol-
tages, Vctrl1 and Vctrl2. Optimum linearity perfor-
mance of the attenuator is achieved by first varying
Vctrl1 of the 1st attenuation stage from -5V to 0V
with Vctrl2 fixed at -5V. The control voltage of the
2nd attenuation stage, Vctrl2, should then be varied
from -5V to 0V, with Vctrl1 fixed at 0V. The HMC812ALC4
is housed in a RoHS compliant 4x4 mm QFN lead-
less ceramic package
However, if the Vctrl1 and Vctrl2 pins are connected
together it is possible to achieve the full analog atten-
uation range with only a small degradation in input
IP3 performance. Applications include AGC circuits
and temperature compensation of multiple gain stages
in microwave point-to-point and VSAT radios.
R _{Electrical Specifications, TA = +25° C, 50 Ohm system}
P ^Parameter
Min.
Typ.
Max.
Units
Insertion Loss
5 - 16 GHz
16 - 24 GHz
24 - 30 GHz
1.5
TBD
dB
2
TBD
dB
2.5
TBD
dB
Attenuation Range
Input Return Loss
Output Return Loss
Input Power for 1 dB Compression (any attenuation)
Input Third Order Intercept
(Two-tone Input Power = 10 dBm Each Tone)
TBD
30
10
10
25
32
dB
dB
dB
dBm
dBm
8-1
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