SKY73112 Datasheet, PDF (7/13 Pages) Skyworks Solutions Inc. – 750-850 MHz High Performance VCO/Synthesizer With Integrated Switch

PRELIMINARY DATA SHEET • SKY73112 VCO/SYNTHESIZER
2. The ground pad of the SKY73112 provides critical electrical
grounding requirements. Design the connection to the ground
pad to provide the best electrical connection to the circuit
board. Multiple vias to the grounding layer are recommended
to connect the top layer ground area to the main ground layer.
3. Skyworks recommends including external bypass capacitors
on the VDD voltage input (pin 37) of the device. These
capacitors should be placed as close as possible to the VDD
input pin.
4. A 50 Ω impedance trace is needed for the RF_OUT (pin 10)
line.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY73112 are provided in
Table 3. The recommended operating conditions are specified in
Table 4 and electrical specifications are provided in Table 5. Spur
suppression measurements are provided in Table 6.
Measurement plots for single sideband phase noise and settling
time are shown in Figures 5 and 6, respectively.
A typical application schematic for the SKY73112 is provided in
Figure 7. Figure 8 shows the package dimensions for the 38-pin
MCM and Figure 9 provides the tape and reel dimensions.
Electrostatic Discharge (ESD) Sensitivity
The SKY73112 ESD threshold level is 2500 VDC using Human
Body Model (HBM) testing. This level applies to RF signal lines
>100 MHz, analog and RF lines <100 MHz, digital lines, power
supply lines, and ground pins.
To avoid latent or visible ESD damage, always follow proper ESD
handling precautions.
Table 3. SKY73112 Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Min
Typical
Max
Units
Supply voltage
VCC
0
5.5
V
Operating temperature, full performance
TOP
–40
+85
°C
Storage temperature
TST
–40
+150
°C
Note 1: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other
parameters set at or below their nominal values.
Table 4. SKY73112 Recommended Operating Conditions
Parameter
Symbol
Supply voltage
VCC
Input voltage (CLK, DATA, LE):
Low level
High level
Output voltage (LD) with 18 kΩ load from
VCC PLL:
Low level, unlocked
High level, unlocked
Reference frequency input voltage (FREF,
pin 23)
FREFIN
Load connected to RF output
RF output switch enable:
High
Low
SWENH
SWENL
Min
Typical
Max
4.75
5.00
5.25
0.6
1.4
Units
V
V
V
0.4
V
2.4
V
0.5
1.0
1.5
Vp-p
50 Ω, maximum VSWR (load input) 2.0:1, all phases
4.75
5.25
V
0.80
V
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
200736A • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • July 9, 2007
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