鈥?/div>
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
鈥?/div>
Maximum operating frequency: 2.6 GHz
鈥?/div>
Maximum IF synthesizer frequency: 800 MHz
鈥?/div>
Supply voltage as low as 2.6 V
鈥?/div>
Fast frequency settling time with fractional-N operation
鈥?/div>
Internal fractional spur reduction
鈥?/div>
Programmable charge pump currents
鈥?/div>
Digital lock detector
鈥?/div>
Power saving at lower frequency
鈥?/div>
Two package options, both 20-pin, 6.5 x 4.4 x 1.0 mm TSSOPs:
鈭?/div>
SKY74038-13 (MSL3, 225
擄C
per JEDEC J-STD-020)
鈭?/div>
SKY74038-21, Pb-free (MSL3, 260
擄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 鈥?20-Pin TSSOP
(Top View)
Skyworks Solutions, Inc. 鈥?Phone [781] 376-3000 鈥?Fax [781] 376-3100 鈥?sales@skyworksinc.com 鈥?www.skyworksinc.com
101075M 鈥?Skyworks Proprietary and Confidential information 鈥?Products and Product Information are Subject to Change Without Notice 鈥?June 4, 2007
1
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