For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
ATTENUATORS - ANALOG - SMT
1
HMC346LC3B
v06.0514
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 18 GHz
General Description
Features
Functional Diagram
Wide Bandwidth: DC - 18 GHz
Low Phase Shift vs. Attenuation
30 dB Attenuation Range
Simplied Voltage Control
RoHS Compliant 3 x 3 mm SMT Package
Electrical Specications, T
A
= +25° C, 50 Ohm system
Typical Applications
The HMC346LC3B is ideal for:
• Test Instrumentation
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar, & ECM
The HMC346LC3B is an absorptive Voltage Variable
Attenuator (VVA) in a leadless “Pb free” RoHS
compliant SMT mount ceramic package operating from
DC - 18 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. The HMC346LC3B allows
the use of surface mount manufacturing techniques.
Parameter Min Typical Max Units
Insertion Loss
DC - 10 GHz
DC - 14 GHz
DC - 18 GHz
1.5
2.2
2.8
2.0
2.7
3.5
dB
dB
dB
Attenuation Range
DC - 12 GHz
DC - 18 GHz
26
22
30
26
dB
dB
Return Loss
DC - 18 GHz 10 dB
Input Power for 0.25 dB Compression (0.5 - 18 GHz)
Min. Atten:
Atten. >2 dB:
+8
-4
dBm
dBm
Input Third Order Intercept (0.5 - 18 GHz)
(Two-tone Input Power = -8 dBm Each Tone)
Min. Atten:
Atten. >2 dB:
+25
+10
dBm
dBm
Switching Characteristics
tRISE, tFALL (10/90% RF):
tON, tOFF (50% CTL to 10/90% RF):
2
8
ns
ns
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
