VARIABLE ATTENUATOR. HMC985LP4KE Datasheet

HMC985LP4KE ATTENUATOR. Datasheet pdf. Equivalent

HMC985LP4KE Datasheet
Recommendation HMC985LP4KE Datasheet
Part HMC985LP4KE
Description GaAs MMIC VOLTAGE - VARIABLE ATTENUATOR
Feature HMC985LP4KE; attenuators - analog - SMT v01.0813 Typical Applications The HMC985LP4KE is ideal for: • Point-to-.
Manufacture Analog Devices
Datasheet
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Analog Devices HMC985LP4KE
v01.0813
Typical Applications
The HMC985LP4KE is ideal for:
Point-to-Point Radio
VSAT Radio
Test Instrumentation
Microwave Sensors
Military, ECM & Radar
Functional Diagram
HMC985LP4KE
GaAs MMIC VOLTAGE - VARIABLE
ATTENUATOR, 10 - 40 GHz
Features
Wide Bandwidth: 10 - 40 GHz
Excellent Linearity: +32 dB Input IP3
Wide Attenuation Range: 35 dB
No External Matching
24 Lead 4x4 mm SMT Package: 16 mm²
General Description
The HMC985LP4KE is an absorptive Voltage Variable
Attenuator (VVA) which operates from 10 - 40 GHz and
is ideal in designs where an analog DC control signal
must be used to control RF signal levels over a 35 dB
dynamic range. It features two shunt-type attenuators
which are controlled by two analog voltages, Vctl1 and
Vctl2. Optimum linearity performance of the attenuator
is achieved by first varying Vctl1 of the first attenuation
stage from -3V to 0V with Vctl2 fixed at -3V. The control
voltage of the second attenuation stage, Vctl2, should
then be varied from -3V to 0V with Vctl1 fixed at 0V.
if the Vctl1 and Vctl2 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, TA = +25 °C, Test Condition Vctl1 = Vctl2
Parameter
Insertion Loss [1]
Attenuation Range
Input Return Loss
Output Return Loss
Frequency
10 - 20 GHz
20 - 30 GHz
30 -40 GHz
10 - 20 GHz
20 - 30 GHz
30 - 40 GHz
10 - 40 GHz
10 - 40 GHz
Min.
25
30
35
Typ.
3
3
3.5
30
35
40
13
13
Input Third Order Intercept
(two-tone input Power = 10 dBm Each Tone) [2]
33
[1] Vcntl1 = Vcntl2 =-2.4V
[2] Vcntl1 = Vcntl2 =-2.0V worst case
Max.
3.5
4
4.5
Units
dB
dB
dB
dB
dB
dB
dB
dB
dBm
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Analog Devices HMC985LP4KE
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Last Content Update: 02/23/2017
COMPARABLE PARTS
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EVALUATION KITS
HMC985LP4KE Evaluation Board
DOCUMENTATION
Data Sheet
HMC985 Die Data Sheet
HMC985LP4KE Data Sheet
TOOLS AND SIMULATIONS
HMC985 S-Parameters
REFERENCE MATERIALS
Quality Documentation
Package/Assembly Qualification Test Report: LP4, LP4B,
LP4C, LP4K (QTR: 2013-00487 REV: 04)
Semiconductor Qualification Test Report: MESFET-F (QTR:
2013-00247)
DESIGN RESOURCES
HMC985 Material Declaration
PCN-PDN Information
Quality And Reliability
Symbols and Footprints
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Analog Devices HMC985LP4KE
v01.0813
Attenuation vs. Frequency over Vctl1 =
Variable, Vctl2 = -3V
0
-5
-10
-15
-20
-25
10
15 20 25 30
FREQUENCY (GHz)
-2.4V
-2.0V
-1.6V
-1.2V
-0.8V
-0.4V
35 40
0.0V
Attenuation vs. Vctl1
Over Temperature @ 25 GHz, Vctl2 = -3V
0
-3
-6
-9
-12
-15
-2.4
-2 -1.6 -1.2 -0.8
Vctrl1 (V)
+25 C
+85 C
-0.4 0
-40 C
Attenuation vs. Pin @ 20 GHz over Vctl1
Vctl1 = Variable, Vctl2 = -3V
0
-4
-8
-12
-16
-20
-24
-5
-1 3 7
INPUT POWER (dBm)
-2.4V
-2.0V
-1.6V
-1.2V
-0.8V
-0.4V
11 15
0.0V
HMC985LP4KE
Gaas mmic voltage - variable
attenuator, 10 - 40 GHz
Attenuation vs. Frequency over Vctl1 =
0V, Vctl2 = Variable
0
-10
-20
-30
-40
-50
-60
-70
10 15 20 25 30 35 40
FREQUENCY (GHz)
-2.4V
-2.0V
-1.6V
-1.2V
-0.8V
-0.4V
0.0V
Attenuation vs. Vctl2
Over Temperature @ 30 GHz, Vctl1 = 0V
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
-2.4
-2
-1.6 -1.2 -0.8
Vctrl1 (V)
-0.4
0
+25 C
+85 C
-40 C
Attenuation vs. Pin @ 20 GHz over Vctl2
Vctl2 = Variable, Vctl1 = 0V
0
-10
-20
-30
-40
-50
-5
-1 3
7 11
INPUT POWER (dBm)
15
-2.4V
-2.0V
-1.6V
-1.2V
-0.8V
-0.4V
0.0V
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