SKY73112 Datasheet, PDF (1/13 Pages) Skyworks Solutions Inc. – 750-850 MHz High Performance VCO/Synthesizer With Integrated Switch

PRELIMINARY DATA SHEET
SKY73112: 750-850 MHz High Performance VCO/Synthesizer
With Integrated Switch
Applications
• 2G, 2.5G, and 3G base station transceivers:
− GSM, EDGE, CDMA, WCDMA
• General purpose RF systems
Features
• Wideband frequency operation: 750 to 850 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
• 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.
Description
Skyworks SKY73112 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.
The SKY73112 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 SKY73112. 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.
The SKY73112 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.
38 37 36 35 34 33 32 31 30
GND 1
GND 2
GND 3
SW_EN 4
GND 5
GND 6
GND 7
GND 8
GND 9
RF_OUT 10
29 GND
28 GND
27 N/C
26 GND
25 GND
24 GND
23 FREF
22 LD
21 N/C
20 GND
11 12 13 14 15 16 17 18 19
S958
Figure 1. SKY73112 Pinout– 38-Pin MCM Package
(Top View)
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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