PRELIMINARY DATA SHEET
SKY73100: 865-960 MHz High Performance VCO/Synthesizer
With Integrated Switch
Applications
Description
Skyworks SKY73100 Voltage-Controlled Oscillator
(VCO)/Synthesizer is a fully integrated, high performance signal
source for high dynamic range transceivers. The device provides
ultra-fine frequency resolution, fast switching speed, and low
phase noise performance for 2G, 2.5G, and 3G base station
transceivers.
• 2G, 2.5G, and 3G base station transceivers:
− GSM, EDGE, CDMA, WCDMA
• General purpose RF systems
Features
The SKY73100 VCO/Synthesizer is a key building block for high-
performance radio system designs that require low power and a
fine step size. Reference clock generators with an output
frequency up to 52 MHz can be used with the SKY73100. The
input clock frequency is divided down by programmable dividers
(1 to 8) for the synthesizer. The phase detector can operate at a
maximum speed of 26 MHz, which allows better phase noise due
to the lower division value.
• Wideband frequency operation: 865 to 960 MHz
• Process-tolerant compensation for VCO
• 24-bit Σ∆ fractional-N synthesizer
• Ultra-fine frequency resolution of 0.001 ppm
• Flexible reference frequency selection
• Three-wire serial interface up to 20 MHz clock frequency
• Integrated PLL supply regulation for spur isolation
The SKY73100 VCO/Synthesizer is provided in a compact, 38-pin
Multi-Chip Module (MCM). The device package and pinout are
shown in Figure 1. A functional block diagram is shown in
Figure 2. Signal pin assignments and functional pin descriptions
are provided in Table 1.
• MCM (38-pin, 9 x 12 mm) Pb-free free (MSL3, 260 °C per
JEDEC J-STD-020) SMT package
Skyworks offers lead (Pb)-free, RoHS (Restriction of
Hazardous Substances) compliant packaging.
38
37
36
35
34
33
32
31
30
29
1
2
3
GND
GND
GND
GND
N/C
28
27
26
25
24
23
22
21
20
GND
4
5
6
7
8
9
SW_EN
GND
GND
GND
GND
GND
GND
GND
FREF
LD
GND
N/C
RF_OUT 10
11
GND
12
13
14
15
16
17
18
19
S958
Figure 1. SKY73100 Pinout– 38-Pin MCM Package
(Top View)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200361A • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • June 20, 2007
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