HMC712ALP3C Datasheet, PDF (3/4 Pages) Analog Devices – GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, 5 - 26.5 GHz

HMC712ALP3C
v00.1115
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 26.5 GHz
Typical Applications
Features
The HMC712ALP3CE is ideal for:
Wide Bandwidth: 5 - 26.5 GHz
• Point-to-Point Radio
Excellent Linearity: +28 dBm Input P1dB
• VSAT Radio
Wide Attenuation Range: 28 dB
• Test Instrumentation
Absorptive Topology
• Microwave Sensors
Singe or Dual Control Operation
• Military, ECM & Radar
16 Lead 3x3mm SMT Package: 9mm²
Preliminary ^{Functional Diagram}
General Description
The HMC712ALP3CE is an absorptive Voltage Var-
iable Attenuator (VVA) which operates from 5 - 26.5
GHz and is ideal in designs where an analog DC
control signal must be used to control RF signal
levels over a 28 dB amplitude range. It features two
shunt-type attenuators which are controlled by two
analog voltages, Vctrl1 and Vctrl2. Optimum linearity
performance of the attenuator is achieved by first
varying Vctrl1 of the 1st attenuation stage from -3V
to 0V with Vctrl2 fixed at -3V. The control voltage of
the 2nd attenuation stage, Vctrl2, should then be
varied from -3V to 0V, with Vctrl1 fixed at 0V. The
HMC712ALP3CE is housed in a RoHS
compliant 3x3 mm QFN leadless package
However, if the Vctrl1 and Vctrl2 pins are connected
together it is possible to achieve the full analog
attenuation 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.
Electrical Specifications, T_A = +25° C, 50 Ohm system
Parameter
Min.
Typ.
Max.
Units
Insertion Loss
5 - 16 GHz
3.5
dB
16 - 24 GHz
4.5
dB
24 - 26.5 GHz
5.5
dB
Attenuation Range
28
dB
Input Return Loss
12
dB
Output Return Loss
10
dB
Input Power for 1 dB Compression (any attenuation)
28
dBm
Input Third Order Intercept
(Two-tone Input Power = 10 dBm Each Tone)
32
dBm
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