SKY12228-12LF Datasheet, PDF (4/9 Pages) Skyworks Solutions Inc. – High IIP3, 0.7 to 1.0 GHz Variable Attenuator

DATA SHEET • SKY12228-12LF: VARIABLE ATTENUATOR
Typical Performance Characteristics
(TOP = +25 C, VCONTROL = 0 to 3.0 V, PIN = 0 dBm, Characteristic Impedance [Zo] = 50 Ω, Unless Otherwise Noted)
0
–5
–10
–15
–20
–25
–30
–35
–40
–45
–50
0.70
271 μA
0 μA
856 μA
1465 μA
1524 μA
0 V 3.1 V
1 V 3.2 V
2 V 3.3 V
3 V 3.4 V
1585 μA
1646 μA
1708 μA
0.75
0.80
0.85
0.90
0.95
1.00
Frequency (GHz)
Figure 3. Insertion Loss vs Frequency vs Control Voltage
0
–5
0 V 3.1 V
1 V 3.2 V
–10
2 V 3.3 V
3 V 3.4 V
–15
–20
–25
–30
–35
–40
–45
–50
0.70
0.75
0.80
0.85
0.90
0.95
1.00
Frequency (GHz)
Figure 4. Return Loss vs Frequency vs Control Voltage
+60
+55
+50
+45
+40
+35
+30
+25
+20
0
700 MHz
900 MHz
1100 MHz
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Control Voltage (V)
Figure 5. IIP3 vs Control Voltage vs Frequency
(Spacing = 10 MHz)
0
–5
–10
–15
–20
–25
–30
–35
–40
–45
0
700 MHz
900 MHz
1100 MHz
200 400 600 800 1000 1200 1400 1600 1800
Control Current (mA)
Figure 6. Attenuation vs Control Current vs Frequency
Evaluation Board Description
The SKY12228-12LF Evaluation Board is used to test the
performance of the SKY12228-12LF variable attenuator. An
assembly drawing for the Evaluation Board is shown in Figure 7
and the layer detail is provided in Figure 8. An Evaluation Board
schematic is shown in Figure 9. Table 4 provides the Bill of
Materials (BOM) list for Evaluation Board components.
The attenuation level of the SKY12228-12LF is controlled by
applying 0 to 3 V to the VCONTROL pin on the Evaluation Board (see
Figure 7).
Package Dimensions
The PCB layout footprint for the SKY12228-12LF is shown in
Figure 10. Typical part markings are shown in Figure 11. Package
dimensions for the 8-pin SOIC are shown in Figure 12, and tape
and reel dimensions are provided in Figure 13.
Package and Handling Information
Since the device package is sensitive to moisture absorption, it is
baked and vacuum packed before shipping. Instructions on the
shipping container label regarding exposure to moisture after the
container seal is broken must be followed. Otherwise, problems
related to moisture absorption may occur when the part is
subjected to high temperature during solder assembly.
The SKY12228-12LF is rated to Moisture Sensitivity Level 3
(MSL3) at 260 C. It can be used for lead or lead-free soldering.
For additional information, refer to the Skyworks Application Note,
Solder Reflow Information, document number 200164.
Care must be taken when attaching this product, whether it is
done manually or in a production solder reflow environment.
Production quantities of this product are shipped in a standard
tape and reel format.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
4
April 6, 2015 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 202500D