SKY73134 Datasheet, PDF (10/17 Pages) Skyworks Solutions Inc. – Wideband PLL Frequency Synthesizer

PRELIMINARY DATA SHEET • SKY73134 FREQUENCY SYNTHESIZER
Table 7. SKY73134 Electrical Specifications: Phase Noise Performance (3 of 3) (Note 1)
(TC = +25 qC, Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Typical
Max
VCO Divided by 4
Phase noise:
@ 1 kHz
@ 10 kHz
@ 100 kHz
@ 1 MHz
VCO – 12
VCO – 12
VCO – 12
VCO – 12
VCO Divided by 8
Phase noise:
@ 1 kHz
@ 10 kHz
@ 100 kHz
Note 1: Performance is guaranteed only under the conditions listed in this Table.
VCO – 18
VCO – 18
VCO – 18
Units
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
Evaluation Board Description
The SKY73134 Evaluation Board is used to test the performance
of the SKY73134 frequency synthesizer. An assembly drawing for
the Evaluation Board is shown in Figure 8 and the layer detail is
provided in Figure 9. A schematic diagram of the SKY73134
Evaluation Board is shown in Figure 10.
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 SKY73134 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.
*** add’l info TBD ***
Package Dimensions
The PCB layout footprint for the SKY73134 is provided in
Figure 11. Figure 12 shows the package dimensions for the
25-pin LGA and Figure 13 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 SKY73134 is rated to Moisture Sensitivity Level 3 (MSL3) at
260 qC. 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 RFLGA
Packages, document number 103147.
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 Information – RF Modules,
document number 101568.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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December 15, 2009 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201199A