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PDF HMC812ALC4 Data sheet ( Hoja de datos )
| Número de pieza | HMC812ALC4 | |
| Descripción | GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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8
Typical Applications
The HMC812ALC4 is ideal for:
• Point-to-Point Radio
• VSAT Radio
• Test Instrumentation
• Microwave Sensors
• Military, ECM & Radar
Functional Diagram
HMC812ALC4
v06.1216
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, 5 - 30 GHz
Features
Wide Bandwidth: 5 - 30 GHz
Excellent Linearity: +32 dBm Input IP3
High Power Handling: +25 dBm Input P1dB
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.
Electrical Specifications, TA = +25° C, 50 Ohm system
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
TBD
30
dB
Input Return Loss
10 dB
Output Return Loss
10 dB
Input Power for 1 dB Compression (any attenuation)
25 dBm
Input Third Order Intercept
(Two-tone Input Power = 10 dBm Each Tone)
32 dBm
8-1
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
1 page  
Attenuation vs. Frequency over Vctrl
Vctrl1 = Vctrl2
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
-50
2
-5 V
-4 V
-3 V
-2 V
-1 V
0V
6 10 14 18 22 26
FREQUENCY (GHz)
30
Attenuation vs. Input Power over Vctrl
Vctrl1 = Vctrl2
0
-5
-10
-15
-20
-25
-30
-5 V -2 V
-4 V -1 V
-35 -3 V 0 V
-40
15
20 25
INPUT POWER (dBm)
30
Output Return Loss, Vctrl1 = Vctrl2
0
-10
-20
-30
-40
2
-5 V
-4 V
-3 V
-2 V
-1 V
0V
6 10 14 18 22 26 30
FREQUENCY (GHz)
HMC812ALC4
GaAs MMIC VOLTAGE-VARIAvB06L.12E16
ATTENUATOR, 5 - 30 GHz
Attenuation vs. Vctrl over Temperature
@ 10 GHz, Vctrl1 = Vctrl2
0
-5
-10
-15
-20
-25
-30 +25 C
+85 C
-35 -40 C
-40
-5
-4 -3 -2 -1
CONTROL VOLTAGE (V)
0
Input Return Loss, Vctrl1 = Vctrl2
0
-10
-20
-30
-40
2
-5 V
-4 V
-3 V
-2 V
-1 V
0V
6 10 14 18 22 26 30
FREQUENCY (GHz)
Input IP3 vs Input Power Over Vctrl
@ 5 GHz, Vctrl1 = Vctrl2
55
-5 V -2 V
-4 V -1 V
50 -3 V 0 V
45
40
35
30
-5
05
SINGLE TONE INPUT POWER (dBm)
10
8
For price, delivery, and to place orders: Analog Devices, Inc., One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
8-4
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| PDF Descargar | [ Datasheet HMC812ALC4.PDF ] | |
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