SKY73084-11 Datasheet, PDF (9/16 Pages) Skyworks Solutions Inc. – 300 - 500 MHz High Gain and Linearity Diversity Downconversion Mixer

DATA SHEET • SKY73084-11 DOWNCONVERSION MIXER
–90
–93
–96
–99
–102
–105
–108
–111
–114
–117
–120
4.75
–40 ^oC
+25 ^oC
+85 ^oC
5.00
5.25
Supply Voltage (V)
Figure 31. Mixer B 4RF to 3LO vs Supply Voltage and Temperature
Evaluation Board Description
The SKY73084-11 Evaluation Board is used to test the
performance of the SKY73084-11 downconversion mixer. An
assembly drawing for the Evaluation Board is shown in Figure 32
and the layer detail is provided in Figure 33. A schematic diagram
of the SKY73084-11 Evaluation Board is shown in Figure 34.
Circuit Design Configurations
The following design considerations are general in nature and
must be followed regardless of final use or configuration:
1. Paths to ground should be made as short as possible.
2. The ground pad of the SKY73084-11 has special electrical
and thermal grounding requirements. This pad is the main
thermal conduit for heat dissipation. Since the circuit board
acts as the heat sink, it must shunt as much heat as possible
from the device. Therefore, design the connection to the
ground pad to dissipate the maximum wattage produced by
the circuit board.
3. Skyworks recommends including external bypass capacitors
on the VCC voltage inputs of the device.
4. Components L5, L6, L14, and L15 (see Figure 34) are high-Q
low loss inductors. These inductors must be able to pass
currents in excess of 200 mA DC.
5. Components R1 and R2 (see Figure 34) set the bias current
for the IF amplifiers. Skyworks recommends that these
resistors have a tolerance of ±1% to optimize performance
consistency of the SKY73084-11. These resistors are not
required for the Evaluation Board to operate as specified in
Tables 3 and 4.
Package Dimensions
The PCB layout footprint for the SKY73084-11 is provided in
Figure 35. Figure 36 shows the package dimensions for the
36-pin MCM and Figure 37 provides the tape and reel
dimensions.
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 SKY73084-11 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,
PCB Design & SMT Assembly/Rework Guidelines for MCM-L
Packages, document number 101752.
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. For packaging details, refer to the Skyworks
Application Note, Tape and Reel, document number 101568.
Electrostatic Discharge (ESD) Sensitivity
The SKY73084-11 is a static-sensitive electronic device. Do not
operate or store near strong electrostatic fields. Take proper ESD
precautions.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
200884F • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • April 3, 2009
9