SKY73032-11_09 Datasheet, PDF (9/14 Pages) Skyworks Solutions Inc. – 700 – 1000 MHz High Gain and Linearity Single Downconversion Mixer

DATA SHEET • SKY73032-11 DOWNCONVERSION MIXER
Evaluation Board Description
The SKY73032-11 Evaluation Board is used to test the
performance of the SKY73032-11 downconversion mixer. An
assembly drawing for the Evaluation Board is shown in Figure 20
and the layer detail is provided in Figure 21.
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 and as low
impedance as possible.
2. The ground pad of the SKY73032-11 provides critical
electrical and thermal functionality. 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 heat produced by the
circuit board. For more information on soldering the
SKY73032-11, refer to the Package and Handling Information
section of this Data Sheet.
3. Skyworks recommends including external bypass capacitors
on the VCC voltage inputs of the device.
4. Components L5 and L4 (see Figure 22) are high-Q, low loss
inductors. These inductors must be able to pass currents in
excess of 200 mA DC.
5. Components R7 and R8 (see Figure 22) allow for external
adjustment of the IF amplifier bias points. To reduce the IF
amplifier bias current, connect pin 20 to ground through
external resistor R8. To increase the IF amplifier bias current,
connect pin 20 to VCC through external resistor R7. For
operation as specified in Tables 3 and 4, these resistors are
not required.
A schematic diagram for the SKY73032-11 Evaluation Board is
shown in Figure 22.
J4
J1
J9
J5
C16 C15
R6
R5 L3
C13 C14
L2 R4
C17 ^T2 C18
L4
L5
C11 C12
J8
R3
R7
R8
C19
R1
C20
C10
C2 C1
U1
C7
C3 ^L1
C5
C4
C6
J2
R2
J3
C8 C9
Note: This Evaluation Board is used for several different Skyworks devices.
Components C4, C6, C8, C9, C13, C15 through C19, R5, and L3 are not used for the
device described by this Data Sheet.
S939
Figure 20. SKY73032-11 Evaluation Board Assembly Diagram
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
200625E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 24. 2009
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