This Variable Attenuator has high gain throughout the broadband.
Electrical Specifications
@ Ta=+25℃, Vcc=+3V, F=3500MHz
PARAMETER
Attenuation
Input Return Loss
Output Return Loss
IIP3
Input P1dB
Current
UNIT
dB
dB
dB
dBm
dBm
mA
MIN
17
-12
-19
46
-
0
TYP
3.3
-16
-17
44
30
10
MAX
2.2
-17
-16
45
-
28
CONDITION
-
-
-
-
-
-
Absolute Maximum Ratings
PARAMETER
Reference Voltage
RF Input Power
Storage Temperature
UNIT
VDC
dBm
℃
MIN
-
-
-40
MAX
3V
30
125
Operating Ranges
PARAMETER
Operating Frequency
Reference Voltage
Control Voltage
UNIT
MHz
VDC
VDC
MIN
3000
-
+1.2V
TYP
-
+3V
-
MAX
4000
-
+10V
Functional Diagram
Korean Facilities : 82-31-250-5078 / rfsales@rfhic.com
US Facility : 919-677-8780 / sales@rfhicusa.com
1
/
4
All specifications may change without notice
Version 5.4
Variable Attenuator
VA103
1.2V
17
-12
46
0
2.5V
9.2
-19
44
4
4.5V
3.3
-16
44
10
7.0V
2.8
-16
44
18
10V
2.2
-17
45
28
Typical Performance Data
@ Vcc=3V, f = 3500MHz
Control Voltage
Attenuation(dB)
Return Loss(dB)
IIP3 (dBm)
Current (mA)
Typical Performance
Attenuation vs. Control
18
16
14
12
10
8
6
4
2
0
1.0V
0
Return Loss vs. Control
Atte nu ation( dB)
R e t u r n L o ss ( d B )
2.5V
4.5V
7.0V
10V
-5
-10
-15
-20
-25
1.0V
2.5V
4.5V
7.0V
10V
C o n tr o l V o l ta g e ( V )
C o n tr o l V o l ta g e ( V )
Current vs. Control Voltage
30
25
50
45
IIP3 vs. Control Voltage
C urrent(mA)
20
15
10
5
0
1.0V
IIP 3 ( d B m )
2.5V
4.5V
7.0V
10V
40
35
30
1.0V
2.5V
4.5V
7.0V
10V
C o n tr o l V o l ta g e ( V )
C o n tr o l V o l ta g e ( V )
Korean Facilities : 82-31-250-5078 / rfsales@rfhic.com
US Facility : 919-677-8780 / sales@rfhicusa.com
2
/
4
All specifications may change without notice
Version 5.4
Variable Attenuator
Package Dimensions
(Type: HY-46B)
VA103
* Unit: mm[inch] | Tolerance:
±0.15[.006]
▲
Top View
▲
Side View
Pin Description
Pin No
1
2
3
Function
Input 1
Ground
Control
Pin No
4
5
6
Function
Vcc+5V
Ground
Output 1
Recommended Pattern
* Mounting Configuration Notes
1. Ground / thermal via holes are critical for the proper performance of this device.
2. Add as much copper as possible to inner and outer layers near the part to ensure optimal thermal performance.
3. Mounting screws can be added near the part to fasten the board to a heatsink. Ensure that the ground / thermal via hole region contacts the heatsink.
4. Do not put solder mask on the backside of the PCB in the region where the board contacts the heatsink.
5. RF trace width depends upon the PCB material and construction.
6. Use 1 oz. Copper minimum.
Korean Facilities : 82-31-250-5078 / rfsales@rfhic.com
US Facility : 919-677-8780 / sales@rfhicusa.com
3
/
4
All specifications may change without notice
Version 5.4
Variable Attenuator
Revision History
Part Number
VA103
Release Date
2012.9.10
Version
5.4
VA103
Modification
-
Data Sheet Status
-
RFHIC Corporation reserves the right to make changes to any products herein or to discontinue any product at any time without notice. While product specifications have been thoroughly
examined for reliability, RFHIC Corporation strongly recommends buyers to verify that the information they are using is accurate before ordering. RFHIC Corporation does not assume
any liability for the suitability of its products for any particular purpose, and disclaims any and all liability, including without limitation consequential or incidental damages.
RFHIC products are not intended for use in life support equipment or application where malfunction of the product can be expected to result in personal injury or death. Buyer uses or
sells such products for any such unintended or unauthorized application, buyer shall indemnify, protect and hold RFHIC Corporation and its directors, officers, stockholders, employees,
representatives and distributors harmless against any and all claims arising out of such unauthorized use.
Sales, inquiries and support should be directed to the local authorized geographic distributor for RFHIC Corporation. For customers in the US, please contact the US Sales Team at 919-
677-8780. For all other inquiries, please contact the International Sales Team at 82-31-250-5078.
Korean Facilities : 82-31-250-5078 / rfsales@rfhic.com
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