hittite HMC346G8 User Manual
查询HMC346G8供应商
MICROWAVE CORPORATION
Typical Applications
The HMC346G8 is ideal for:
• Basestation Infrastructure
9
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar, & ECM
• Test Instrumentation
Functional Diagram
ATTENUATORS - SMT
v01.0304
HMC346G8
GaAs MMIC HERMETIC SMT VOLTAGE-
VARIABLE ATTENUATOR, DC - 8 GHz
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 Variable 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 provide 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 compensation of multiple gain stages in microwave radios
and test instrumentation.
9 - 62
Electrical Specifi cations, T
Insertion Loss DC - 6 GHz
Attenuation Range DC - 8 GHz 30 dB
Return Loss DC - 8 GHz 7 10 dB
Switching Characteristics
Input Power for 0.25 dB Compression (0.5 - 8 GHz)
Input Third Order Intercept (0.5 - 8 GHz)
(Two-tone Input Power = -8 dBm Each Tone)
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
= +25° C, 50 ohm system
A
Parameter Min Typical Max Units
DC - 8 GHz
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
Min. Atten.
Atten. >2 dB
Min. Atten.
Atten. >2 dB
Order Online at www.hittite.com
2.0
2.0
+8
+25
+10
2
8
-2
3.0
3.5
dB
dB
ns
ns
dBm
dBm
dBm
dBm
MICROWAVE CORPORATION
v01.0304
HMC346G8
GaAs MMIC HERMETIC SMT VOLTAGE-
VARIABLE ATTENUATOR, DC - 8 GHz
GaAs MMIC SUB-HARMONICALLY PUMPED MIXER 17 - 25 GHz
Insertion Loss vs. Temperature
0
-1
-2
-3
INSERTION LOSS (dB)
-4
-5
01234567 8
+ 25C
- 40C
+ 85C
FREQUENCY
Optimized for 4 GHz Operation
0
-5
-10
-15
-20
-25
ATTENUATION (dB)
-30
-35
-40
01234567 8
FREQUENCY (GHz)
Relative Attenuation, Control Voltage
Relative Attenuation, Control Voltage
Return Loss vs. Attenuation
0
-5
-10
-15
RETURN LOSS (dB)
-20
-25
012345678 910
FREQUENCY (GHz)
5 dB
10 dB
15 dB
20 dB
25 dB
30 dB
Optimized for 8 GHz Operation
0
-5
-10
-15
-20
-25
ATTENUATION (dB)
-30
-35
-40
01234567 8
FREQUENCY (GHz)
9
ATTENUATORS - SMT
Relative Attenuation vs.
Control Voltage @ 4 GHz
0
-0.5
-1
-1.5
-2
CONTROL VOLTAGE (Vdc)
-2.5
-3
0 5 10 15 20 25 30
RELATIVE ATTENUATION (dB)
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
V1 + 25C
V2 + 25C
V1 - 40C
V2 - 40C
V1 + 85C
V2 + 85C
Relative Attenuation vs.
Control Voltage @ 8 GHz
0
-0.5
-1
-1.5
-2
CONTROL VOLTAGE (Vdc)
-2.5
-3
0 5 10 15 20 25 30
Order Online at www.hittite.com
V1 + 25C
V2 + 25C
V1 - 40C
V2 - 40 C
V1 + 85C
V2 + 85C
RELATIVE ATTENUATION (dB)
9 - 63
Loading...