HMC346LC3B [HITTITE]
GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 18 GHz; 砷化镓MMIC压控衰减器， DC - 18 GHz的
| 型号： | HMC346LC3B |
| 厂家： | 
HITTITE MICROWAVE CORPORATION |
| 描述： | GaAs MMIC VOLTAGE-VARIABLE ATTENUATOR, DC - 18 GHz |
| 文件： | 总6页 (文件大小：238K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HMC346LC3B
v05.1208
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 18 GHz
5
Typical Applications
The HMC346LC3B is ideal for:
• Test Instrumentation
Features
Wide Bandwidth: DC - 18 GHz
Low Phase Shift vs. Attenuation
30 dB Attenuation Range
• Fiber Optics & Broadband Telecom
• Microwave Radio & VSAT
• Military Radios, Radar, & ECM
Simplified Voltage Control
RoHS Compliant 3 x 3 mm SMT Package
General Description
Functional Diagram
The HMC346LC3B is an absorptive Voltage Variable
Attenuator (VVA) in a leadless “Pb free” RoHS com-
pliant SMT mount ceramic package operating from
DC - 18 GHz. It features an on-chip reference atten-
uator 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.
Electrical Specifications, TA = +25° C, 50 Ohm system
Parameter
Min
Typical
Max
Units
DC - 10 GHz
DC - 14 GHz
DC - 18 GHz
1.5
2.2
2.8
2.0
2.7
3.5
dB
dB
dB
Insertion Loss
DC - 12 GHz
DC - 18 GHz
26
22
30
26
dB
dB
Attenuation Range
DC - 18 GHz
10
dB
Return Loss
Min. Atten:
Atten. >2 dB:
+8
-4
dBm
dBm
Input Power for 0.25 dB Compression (0.5 - 18 GHz)
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
tRISE, tFALL (10/90% RF):
tON, tOFF (50% CTL to 10/90% RF):
2
8
ns
ns
Switching Characteristics
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
5 - 80
HMC346LC3B
v05.1208
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 18 GHz
5
Relative Attenuation
Insertion Loss vs. Temperature
0
-1
-2
-3
-4
0
-10
-20
-30
-40
+25C
+85C
-40C
0
2
4
6
8
10
12
14
16
18
18
18
0
2
4
6
8
10
12
14
16
18
30
18
FREQUENCY (GHz)
FREQUENCY (GHz)
Relative Attenuation vs.
Control Voltage @ 10 GHz
Return Loss vs. Attenuation
0
0
-5
-10
-15
-20
-25
-30
-35
-0.5
V1
-1
V2
-1.5
-2
-2.5
-3
MIN
5 dB
MAX
0
2
4
6
8
10
12
14
16
0
5
10
15
20
25
FREQUENCY (GHz)
RELATIVE ATTENUATION (dB)
Relative Phase vs. Attenuation
Input IP3 vs. Attenuation*
180
30
5 dB
150
120
90
60
30
0
10dB
15dB
20dB
25dB
30dB
Max
25
20
15
10
0 dB
3 dB
5
6 dB
10 dB
0
0
2
4
6
8
10
12
14
16
0
2
4
6
8
10
12
14
16
FREQUENCY (GHz)
FREQUENCY (GHz)
*Two-tone input power = -8 dBm each tone, 1 MHz spacing.
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
5 - 81
HMC346LC3B
v05.1208
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 18 GHz
Second Harmonic
vs. Attenuation, Pin = -8 dBm
5
Input IP2 vs. Attenuation*
70
80
60
50
40
70
60
50
30
40
0 dB
0 dB
3 dB
6 dB
3 dB
6 dB
10 dB
10 dB
20
30
10
20
0
2
4
6
8
10
12
14
16
18
0
2
4
6
8
10
12
14
16
18
FREQUENCY (GHz)
FREQUENCY (GHz)
0.25 dB Compression vs. Attenuation
1 dB Compression vs. Attenuation
15
20
10
15
10
5
5
0 dB (REF)
6 dB
0
0 dB (REF)
6 dB
-5
0
-10
-5
0
2
4
6
8
10
12
14
16
18
0
2
4
6
8
10
12
14
16
18
FREQUENCY (GHz)
FREQUENCY (GHz)
*Two-tone input power = -8 dBm each tone, 1 MHz spacing.
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
5 - 82
HMC346LC3B
v05.1208
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 18 GHz
5
Absolute Maximum Ratings
RF Input Power
+18 dBm
Control Voltage Range
Storage Temperature
Operating Temperature
ESD Sensitivity (HBM)
+1 to -5V
-65 to +150 °C
-40 to +85 °C
Class 1A
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Outline Drawing
NOTES:
1. PACKAGE BODY MATERIAL: ALUMINA
2. LEAD AND GROUND PADDLE PLATING: GOLD FLASH OVER Ni
3. DIMENSIONS ARE IN INCHES [MILLIMETERS]
4. LEAD SPACING TOLERANCE IS NON-CUMULATIVE
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED
TO PCB RF GROUND
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
5 - 83
HMC346LC3B
v05.1208
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 18 GHz
5
Pin Descriptions
Pin Number
Function
GND
Description
Interface Schematic
Package bottom has exposed metal paddle that must also be
connected to PCB RF ground.
1, 3, 7, 9
2, 8
This pin is DC coupled and matched to 50 Ohm. Blocking
capacitors are required if the RF line potential is not equal to
0V.
RF1
RF2
4, 6
V2, V1
Control input (master).
Control input (slave).
5
I
This pin may be connected to PCB RF/DC ground.
Performance will not be affected.
10, 11, 12
N/C
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.)
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
5 - 84
HMC346LC3B
v05.1208
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 18 GHz
5
Evaluation PCB
List of Materials for Evaluation PCB 109741 [1]
The circuit board used in the final application
should be generated with proper RF circuit design
techniques. Signal lines at the RF ports should be
50 ohm impedance and the package ground leads
and package bottom should be connected directly
to the PCB RF ground plane, similar to that shown
above. The evaluation circuit board shown above is
available from Hittite Microwave Corporation upon
request.
Item
Description
J1 - J2
J3 - J7
U1
PCB Mount SMA RF Connector
DC Pin
HMC346LC3B VVA
109739-1 Evaluation PCB
[2]
PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
5 - 85
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