DATA SHEET
SKY74038: 2.6 GHz/800 MHz Dual Fractional-N/lnteger-N
Frequency Synthesizer
Applications
•
Multi-slot GSM/DCS
•
PCS/W-CDMA
•
Portable communication systems
•
Dual-mode cellular telephone systems
•
Spread spectrum receivers
•
Wireless LAN systems
•
Wireless routers and WLL systems
•
SATCOM receivers
Description
Skyworks SKY74038 is a complete, low-power 2.6 GHz/800 MHz
dual frequency synthesizer. The device provides both Radio
Frequency (RF) channels and Intermediate Frequency (IF)
channels. Fractional-N operation offers low phase noise, fast
settling time, and low spurious tones for RF channels. A standard
integer-N division is used for IF channels.
The three-wire serial interface provides programmable control of
the frequency synthesizer to support dual-conversion
transceivers.
The SKY74038 is available as a 20-pin Thin Shrink Small Outline
Package (TSSOP) (-13 option) or as a Pb-free 20-pin TSSOP (-21
option). The device package and pin configuration are shown in
Figure 1. A functional block diagram of the SKY74038 is shown in
Figure 2.
Features
•
Maximum operating frequency: 2.6 GHz
•
Maximum IF synthesizer frequency: 800 MHz
•
Supply voltage as low as 2.6 V
•
Fast frequency settling time with fractional-N operation
•
Internal fractional spur reduction
•
Programmable charge pump currents
•
Digital lock detector
•
Power saving at lower frequency
•
Two package options, both 20-pin, 6.5 x 4.4 x 1.0 mm TSSOPs:
−
SKY74038-13 (MSL3, 225
°C
per JEDEC J-STD-020)
−
SKY74038-21, Pb-free (MSL3, 260
°C
per JEDEC J-STD-
020)
Skyworks offers lead (Pb)-free, RoHS (Restriction of
Hazardous Substances) compliant packaging.
VDD1_RF
VDD2_RF
CPO_RF
GND
RFIN
RFINB
GND
FREF
GND
LD_TP
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VDD1_IF
VDD2_IF
CPO_IF
GND
IFIN
IFINB
GND
LE
DAT
CLK
C1452
Figure 1. SKY74038 Pinout – 20-Pin TSSOP
(Top View)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
101075M • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • June 4, 2007
1
SKYWORKS [ SKYWORKS SOLUTIONS INC. ]
