HMC346LP3
/
346LP3E
v05.1008
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 14 GHz
5
ATTENUATORS - SMT
Typical Applications
The HMC346LP3 / HMC346LP3E is ideal for:
• Basestation Infrastructure
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar, & ECM
• Test Instrumentation
Features
Wide Bandwidth: DC - 14 GHz
Low Phase Shift vs. Attenuation
30 dB Attenuation Range
Simplified Voltage Control
3 x 3 x 1 mm SMT Package
Functional Diagram
General Description
The HMC346LP3 & HMC346LP3E are pabsorp-
tive Voltage Variable Attenuators (VVA) in low cost
leadless surface mount plastic packages operating
from DC - 14 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. This VVA is an excellent alterna-
tive to the HMC121C8.
Electrical Specifi cations,
T
A
= +25° C, 50 ohm system
Parameter
Insertion Loss
Attenuation Range
Return Loss
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)
DC - 10 GHz
DC - 14 GHz
DC - 10 GHz
DC - 14 GHz
DC - 14 GHz
tRISE, tFALL (10/90% RF):
tON, tOFF (50% CTL to 10/90% RF):
Min. Atten:
Atten. >2 dB:
Min. Atten:
Atten. >2 dB:
27
22
5
Min
Typical
1.7
2.8
30
27
10
2
8
+8
-4
+25
+10
Max
2.2
3.3
Units
dB
dB
dB
dB
dB
ns
ns
dBm
dBm
dBm
dBm
5 - 96
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.,
For price, delivery, and to place orders, please contact Hittite
Way, P.O. Box 9106, Norwood, MA 02062-9106
Microwave Corporation:
One Technology
20 Alpha Road, Chelmsford, MA 01824 Phone:
Phone: 781-329-4700 • Order online at www.analog.com
978-250-3343 Fax: 978-250-3373
Application Support: Phone: 1-800-ANALOG-D
Order On-line at www.hittite.com
HMC346LP3 / 346LP3E
v05.1008
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 14 GHz
Insertion Loss vs. Temperature
0
Relative Attenuation
0
5
ATTENUATORS - SMT
5 - 97
INSERTION LOSS (dB)
-2
ATTENUATION (dB)
12
14
16
-1
-10
-20
-3
+25 C
-40 C
+85 C
-30
-4
0
2
4
6
8
10
FREQUENCY (GHz)
-40
0
2
4
6
8
10
12
14
16
FREQUENCY (GHz)
Return Loss vs. Attenuation
0
-5
-10
-15
-20
-25
-30
-35
0
2
4
6
8
10
12
14
16
FREQUENCY (GHz)
Relative Attenuation vs.
Control Voltage @ 10 GHz
0
-0.5
-1
-1.5
-2
-2.5
-3
0
5
10
15
20
25
30
RELATIVE ATTENUATION (dB)
V1
V2
MIN
5 dB
MAX
Relative Phase
180
150
120
90
60
30
0
0
2
4
6
8
10
12
14
16
FREQUENCY (GHz)
5 dB
10 dB
15 dB
20 dB
25 dB
30 dB
max
Input IP3 vs. Attenuation*
30
25
INPUT IP3 (dBm)
20
15
10
5
0
0
2
4
6
8
10
12
14
16
FREQUENCY (GHz)
0 dB
3 dB
6 dB
10 dB
*Two-tone input power = -8 dBm each tone, 1 MHz spacing.
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.
RELATIVE PHASE (DEG)
For price, delivery, and to place orders: Analog Devices, Inc.,
For price, delivery, and to place orders, please contact Hittite
Way, P.O. Box 9106, Norwood, MA 02062-9106
Microwave Corporation:
One Technology
20 Alpha Road, Chelmsford, MA 01824 Phone:
Phone: 781-329-4700 • Order online at www.analog.com
978-250-3343 Fax: 978-250-3373
Application Support: Phone: 1-800-ANALOG-D
Order On-line at www.hittite.com
CONTROL VOLTAGE (Vdc)
RETURN LOSS (dB)
v05.1008
HMC346LP3 / 346LP3E
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 14 GHz
5
ATTENUATORS - SMT
Input IP2 vs. Attenuation*
70
60
INPUT IP2 (dBm)
50
40
30
20
10
0
2
4
6
8
10
12
14
16
FREQUENCY (GHz)
Second Harmonic
vs. Attenuation, Pin = -8 dBm
80
70
60
50
40
30
20
0
2
4
6
8
10
12
14
16
FREQUENCY (GHz)
0 dB
3 dB
6 dB
10 dB
SECOND HARMONIC (dBc)
0 dB
3 dB
6 dB
10 dB
0.25 dB Compression vs. Attenuation
15
1 dB Compression vs. Attenuation
20
10
INPUT 0.25dB (dBm)
INPUT P1dB (dBm)
15
5
0 dB (REF)
6 dB
10
0
5
-5
0
0 dB (REF)
6 dB
-10
0
2
4
6
8
10
12
14
16
FREQUENCY (GHz)
-5
0
2
4
6
8
10
12
14
16
FREQUENCY (GHz)
*Two-tone input power = -8 dBm each tone, 1 MHz spacing.
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.
5 - 98
For price, delivery, and to place orders: Analog Devices, Inc.,
For price, delivery, and to place orders, please contact Hittite
Way, P.O. Box 9106, Norwood, MA 02062-9106
Microwave Corporation:
One Technology
20 Alpha Road, Chelmsford, MA 01824 Phone:
Phone: 781-329-4700 • Order online at www.analog.com
978-250-3343 Fax: 978-250-3373
Application Support: Phone: 1-800-ANALOG-D
Order On-line at www.hittite.com
HMC346LP3 / 346LP3E
v05.1008
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 14 GHz
Absolute Maximum Ratings
RF Input Power
Control Voltage Range
Storage Temperature
Operating Temperature
ESD Sensitivity (HBM)
+18 dBm
+1 to -5V
-65 to +150 °C
-40 to +85 °C
Class 1A
5
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Outline Drawing
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS]
3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE
4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM.
PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm.
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE
SOLDERED TO PCB RF GROUND.
7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED
LAND PATTERN.
Package Information
Part Number
HMC346LP3
HMC346LP3E
Package Body Material
Low Stress Injection Molded Plastic
RoHS-compliant Low Stress Injection Molded Plastic
Lead Finish
Sn/Pb Solder
100% matte Sn
MSL Rating
MSL1
MSL1
[1]
Package Marking
[3]
346
XXXX
346
XXXX
[2]
[1] Max peak reflow temperature of 235 °C
[2] Max peak reflow temperature of 260 °C
[3] 4-Digit lot number XXXX
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.,
For price, delivery, and to place orders, please contact Hittite
Way, P.O. Box 9106, Norwood, MA 02062-9106
Microwave Corporation:
One Technology
20 Alpha Road, Chelmsford, MA 01824 Phone:
Phone: 781-329-4700 • Order online at www.analog.com
978-250-3343 Fax: 978-250-3373
Application Support: Phone: 1-800-ANALOG-D
Order On-line at www.hittite.com
5 - 99
ATTENUATORS - SMT
HMC346LP3 / 346LP3E
v05.1008
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 14 GHz
5
ATTENUATORS - SMT
Pin Descriptions
Pin Number
1, 3, 7, 10, 12
Function
GND
Description
Package bottom has exposed metal paddle that must also be
connected to PCB RF ground.
This pin is DC coupled and matched to 50 Ohm. Blocking
capacitors are required if the RF line potential is not equal to
0V.
This pin should be connected to PCB RF ground.
Interface Schematic
2, 11
RF1
RF2
4, 9, 13, 14, 15, 16
N/C
5, 8
V2, V1
Control input (master).
6
I
Control input (slave).
Single-Line Control Driver
External op-amp control circuit maintains impedance match while attenuation is varied. Input control ranges from 0 Volts
(min. attenuation) to -3.0 Volts (max. attenuation.)
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.
5 - 100
For price, delivery, and to place orders: Analog Devices, Inc.,
For price, delivery, and to place orders, please contact Hittite
Way, P.O. Box 9106, Norwood, MA 02062-9106
Microwave Corporation:
One Technology
20 Alpha Road, Chelmsford, MA 01824 Phone:
Phone: 781-329-4700 • Order online at www.analog.com
978-250-3343 Fax: 978-250-3373
Application Support: Phone: 1-800-ANALOG-D
Order On-line at www.hittite.com
