HMC346LC3BTR [HITTITE]
Variable Attenuator, GAAS,;
| 型号： | HMC346LC3BTR |
| 厂家： | 
HITTITE MICROWAVE CORPORATION |
| 描述： | Variable Attenuator, GAAS, |
| 文件： | 总6页 (文件大小：297K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HMC346LC3B
v06.0514
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 18 GHz
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
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.
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: 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
1
HMC346LC3B
v06.0514
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 18 GHz
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: 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
2
HMC346LC3B
v06.0514
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 18 GHz
Second Harmonic
vs. Attenuation, Pin = -8 dBm
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: 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
3
HMC346LC3B
v06.0514
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 18 GHz
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
Package Information
Part Number
Package Body Material
Alumina, White
Lead Finish
MSL Rating
MSL3 [1]
Package Marking [2]
H346
XXXX
HMC346LC3B
Gold over Nickel
[1] Max peak reflow temperature of 260 °C
[2] 4-Digit lot number XXXX
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
4
HMC346LC3B
v06.0514
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 18 GHz
Pin Descriptions
Pin Number
Function
Description
Interface Schematic
Package bottom has exposed metal paddle that must also be
connected to PCB RF ground.
1, 3, 7, 9
2, 8
GND
This pin is DC coupled and matched to 50 Ohm. Blocking
capacitors are required if the RF line potential is not equal to
RF1
RF2
0V.
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: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
5
Application Support: Phone: 978-250-3343 or apps@hittite.com
HMC346LC3B
v06.0514
GaAs MMIC VOLTAGE-VARIABLE
ATTENUATOR, DC - 18 GHz
Evaluation PCB
List of Materials for Evaluation PCB 109741 [1]
The circuit board used in the application should
be generated with proper RF circuit design tech-
niques. 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: 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
6
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