Skyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com
200352A Skyworks Proprietary and Confidential information Products and Product Information are Subject to Change Without Notice June 8, 2005
1
PRODUCT SUMMARY
SKY73100: 750 900 MHz High Performance
VCO/Synthesizer Solution for 2G/3G Base Station Transceiver
Applications
Applications
2G/3G base station transceivers:
- GSM/EDGE, CDMA, UMTS/WCDMA, iDEN
Land mobile radio
ISM band transceivers
High performance radio links
RF identification
Features
Complete high performance signal source
Sigma-delta fractional-N synthesizer
Integrated high performance VCO
Excellent VCO phase noise:
130 dBc/Hz at 100 kHz offset
150 dBc/Hz at 800 kHz offset
152 dBc/Hz at 1 MHz offset
Less than 1 RMS integrated phase noise (100 Hz 100 kHz)
Greater than 60 dB on/off RF switch isolation
Low spurious levels
Fast settling time
Four selectable frequency bands
Harmonic levels less than 25 dBc
Integrated tank circuit
Programmable charge pump current
Digital lock detect
Small, MCM (32-pin, 8 x 10 mm) Pb-free package (MSL3,
250
C per JEDEC J-STD-020)
Skyworks offers lead (Pb)-free "environmentally
friendly" packaging that is RoHS compliant
(European Parliament for the Restriction of
Hazardous Substances).
Description
The SKY73100 is a fully integrated, high performance signal
source for high dynamic range transceivers. This solution includes
a 21-bit sigma-delta fractional-N synthesizer, high Q tank circuit,
output switch, and an extremely low phase noise Voltage
Controlled Oscillator (VCO). The device offers four separately
selectable frequency bands from 750 MHz to 900 MHz.
The integrated phase noise from 100 Hz to 100 kHz measures
less then 1
o
RMS. The phase noises at 800 kHz and 1 MHz offset
are 150 dBc/Hz and 152 dBc/Hz, respectively, making the
SKY73100 an ideal solution for GSM/EDGE, WCDMA, and CDMA
base station transceivers. For GSM/EDGE receivers, the
SKY73100 also includes an on/off switch that provides more than
60 dB of RF isolation.
The SKY73100 VCO/Synthesizer is provided in a compact, 32-pin
Multi-Chip Module (MCM). A functional block diagram of the
device is shown in Figure 1. Table 1 presents a performance
overview.
Fractional-N Synthesizer
Charge Pump Output
Serial Data, Clock, Latch Enable
Reference In
Switch Enable
VCO Out+
VCO Out
Lock Detect
Loop Filter
V Tune
S642
Figure 1. SKY73100 VCO/Synthesizer Block Diagram
PRODUCT SUMMARY SKY73100
Skyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com
2
200352A Skyworks Proprietary and Confidential information Products and Product Information are Subject to Change Without Notice June 8, 2005
Table 1. SKY73100 Performance Overview
Parameter Typical
Performance
Frequency Range
750900 MHz
Output power
+3 dBm
2
nd
harmonic
30 dBc
3
rd
harmonic
45 dBc
Settling time
300
s
On/off isolation
65 dB
Minimum step size
3.5 Hz (with 6.5 MHz comparison frequency)
Integrated RMS phase noise (10 Hz 100 kHz)
1 degree
VCO phase noise:
@ 10 kHz
@ 100 kHz
@ 400 kHz
@ 800 kHz
@ 1 MHz
@ 10 MHz
100 dBc/Hz
130 dBc/Hz
143 dBc/Hz
150 dBc/Hz
152 dBc/Hz
166 dBc/Hz
Ordering Information
Model Name
Manufacturing Part Number
Product Revision
SKY73100 VCO/Synthesizer
SKY73100 -xx (Pb-free package)
Copyright 2005, Skyworks Solutions, Inc. All Rights Reserved.
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