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PDF HMC346G8 Data sheet ( Hoja de datos )
| Número de pieza | HMC346G8 | |
| Descripción | GaAs MMIC HERMETIC SMT VOLTAGEVARIABLE ATTENUATOR/ DC - 8 GHz | |
| Fabricantes | Hittite Microwave Corporation | |
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HMC346G8v01.0304
MICROWAVE CORPORATION
GaAs MMIC HERMETIC SMT VOLTAGE-
VARIABLE ATTENUATOR, DC - 8 GHz
Typical Applications
The HMC346G8 is ideal for:
9 • Basestation Infrastructure
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar, & ECM
• Test Instrumentation
Functional Diagram
Features
Wide Bandwidth: DC - 8 GHz
Low Phase Shift vs. Attenuation
30 dB Attenuation Range
8 Lead Hermetic SMT Package
General Description
The HMC346G8 is an absorptive Voltage Vari-
able Attenuator (VVA) in an 8 lead glass/metal
(hermetic) surface-mount package operating
from DC - 8 GHz. It features an on-chip reference
attenuator for use with an external op-amp to pro-
vide simple single voltage attenuation control, 0
to -3V. The device is ideal in designs where an
analog DC control signal must control RF signal
levels over a 30 dB amplitude range. Applications
include AGC circuits and temperature compensa-
tion of multiple gain stages in microwave radios
and test instrumentation.
Electrical Specifications, TA = +25° C, 50 ohm system
Parameter
Min
Insertion Loss
DC - 6 GHz
DC - 8 GHz
Attenuation Range
DC - 8 GHz
Return Loss
DC - 8 GHz
7
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
Input Power for 0.25 dB Compression (0.5 - 8 GHz)
Min. Atten.
Atten. >2 dB
Input Third Order Intercept (0.5 - 8 GHz)
(Two-tone Input Power = -8 dBm Each Tone)
Min. Atten.
Atten. >2 dB
Typical
2.0
2.0
30
10
2
8
+8
-2
+25
+10
Max
3.0
3.5
Units
dB
dB
dB
dB
ns
ns
dBm
dBm
dBm
dBm
9 - 62
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
1 page  
MICROWAVE CORPORATION
v01.0304
HMC346G8
GaAs MMIC HERMETIC SMT VOLTAGE-
VARIABLE ATTENUATOR, DC - 8 GHz
9
Pin Descriptions
Pin Number
Function
1, 8 RF1, RF2
2, 7 GND
Description
This pin is DC coupled and matched to 50 Ohm. Blocking
capacitors are required if RF line potential is not equal to 0V.
This pin must be DC grounded.
Interface Schematic
3, 6 V2, V1
Control Input (Master).
4I
Control Input (Slave).
5 O This pin must have an external 500 Ohm resistor to ground.
Single-Line Control Driver
9 - 66
Note:
External op-amp control circuit maintains impedance
match while attenuation is varied. Input control ranges
from 0 Volts (min. attenuation) to -2.5 Volts (max.
attenuation.)
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
5 Page | ||
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| PDF Descargar | [ Datasheet HMC346G8.PDF ] | |
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