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CX74038 Datasheet(Fiches technique) 1 Page - Skyworks Solutions Inc.

Numéro de pièce CX74038
Description  2.6 GHz/800 MHz Dual Fractional-N/lnteger-N Frequency Synthesizer
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Fabricant  SKYWORKS [Skyworks Solutions Inc.]
Site Internet  http://www.skyworksinc.com
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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
101075I • Skyworks Proprietary and Confidential information • Products and product information are subject to change without notice • January 31, 2005
1
DATA SHEET
CX74038: 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
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
• TSSOP (20-pin, 6.5 x 4.4 x 1.0 mm) package
Description
The Skyworks CX74038 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 20-pin Thin Shrink Small Outline Package (TSSOP) device
package and pin configuration are shown in Figure 1. A functional
block diagram of the CX74038 is shown in Figure 2.
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2
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7
8
9
10
20
19
18
17
16
15
14
13
12
11
VDD1_RF
VDD2_RF
CPO_RF
GND
GND
FREF
GND
LD_TP
VDD1_IF
VDD2_IF
CPO_IF
C1452
GND
IFIN
IFINB
GND
LE
DAT
CLK
RFIN
RFINB
Figure 1. CX74038 Pinout – 20-Pin TSSOP
(Top View)




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