SKY73049-350LF [SKYWORKS]

Double Balanced Mixer;
SKY73049-350LF
型号: SKY73049-350LF
厂家: SKYWORKS SOLUTIONS INC.    SKYWORKS SOLUTIONS INC.
描述:

Double Balanced Mixer

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DATA SHEET  
SKY73049-350LF: 200 to 5000 MHz Single Downconversion  
Mixer  
Applications  
IF_OUT_P  
IF_OUT_N  
RF_IN  
2G, 2.5G, 3G, and 4G base station transceivers: GSM, EDGE,  
CDMA, WCDMA, LTE, WiMAX  
General purpose RF systems  
Wireless infrastructure  
Features  
RF frequency operation range: 200 to 5000 MHz  
High-side or low-side injection  
LO_IN  
S1627  
Integrated LO driver  
Figure 1. SKY73049-350LF Block Diagram  
Wideband integrated 50 Ω matched LO and RF ports  
+3.3 V or +5 V operation  
Description  
Small, QFN (16-pin, 3 x 3 mm) package (MSL1, 260 C per  
JEDEC J-STD-020)  
The SKY73049-350LF is a fully integrated, wideband single mixer  
that includes Local Oscillator (LO) drivers, an RF input stage, and  
a high linearity mixer core. The SKY73049-350LF features a  
power gain of 7 dB, a 3rd Order Input Intercept Point (IIP3) of +26  
dBm, and a Noise Figure (NF) of 15 dB over a wide frequency  
range, which makes the device an ideal solution for multi-band  
2G, 2.5G, 3G, and 4G base station transceivers.  
Skyworks Pb-free products are compliant with  
all applicable legislation. For additional  
information, refer to Skyworks Definition of  
Lead (Pb)-Free, document number SQ04-0073.  
The SKY73049-350LF is manufactured using a robust SiGe  
BiCMOS process, and has been designed for optimum long-term  
reliability. The device is provided in a compact, 3 x 3 mm, 16-pin  
Quad Flat No-Lead (QFN) package. A functional block diagram is  
shown in Figure 1. The pin configuration and package are shown  
in Figure 2. Signal pin assignments and functional pin  
descriptions are provided in Table 1.  
16  
15  
14  
13  
1
2
3
4
12  
11  
10  
9
GND_MIX  
RF_IN  
VCC4  
IF_OUT_P  
IF_OUT_N  
GND_IF  
RF_COM  
VCC1  
5
6
7
8
S1697  
Figure 2. SKY73049-350LF Pinout – 16-Pin QFN  
(Top View)  
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com  
201130F • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • January 2, 2014  
1
DATA SHEET • SKY73049-350LF SINGLE DOWNCONVERSION MIXER  
Table 1. SKY73049-350LF Signal Descriptions  
Pin #  
Name  
GND_MIX  
Description  
Ground for mixer  
Pin #  
9
Name  
GND_IF  
Description  
1
2
3
4
5
6
7
8
Ground for IF  
RF_IN  
RF_COM  
VCC1  
RF input for mixer  
10  
11  
12  
13  
14  
15  
16  
IF_OUT_N  
IF_OUT_P  
VCC4  
Negative IF output  
RF common (AC ground) for mixer input  
Supply for mixer  
Positive IF output  
Supply for mixer  
VCC2  
Supply for mixer  
PWR_DWN  
RBIAS_EXT1  
VCC5  
Power down control  
External bias resistor for mixer  
Supply for mixer  
VCC3  
Supply for mixer  
LO_IN  
LO_COM  
LO input  
LO common (AC ground) for LO input  
RBIAS_EXT2  
External bias resistor for LO chain  
Note: Exposed pad must be grounded.  
Technical Description  
Electrical and Mechanical Specifications  
The SKY73049-350LF is a high dynamic range single mixer,  
optimized for base station receiver applications. The device  
consists of an RF input stage, a high linearity active mixer core,  
and an LO amplifier.  
The absolute maximum ratings of the SKY73049-350LF are  
provided in Table 2. The recommended operating conditions are  
specified in Table 3, and electrical specifications are provided in  
Tables 4 (+5 V operation) and 5 (+3.3 V operation).  
RF Active Mixer  
Evaluation Board Description  
The high linearity SKY73049-350LF is an active, double balanced  
mixer that provides good noise performance and an excellent IIP3.  
Additionally, the balanced nature of the mixer provides for high  
port-to-port isolation. A wideband match to 50 Ω is provided  
internally, which eliminates the need for any external matching  
components except for a coupling capacitor.  
The SKY73049-350LF Evaluation Board is used to test the  
performance of the SKY73049-350LF downconversion mixer. An  
Evaluation Board schematic diagram is provided in Figure 3. An  
assembly drawing for the Evaluation Board is shown in Figure 4  
and the layer detail is provided in Figure 5.  
The IF outputs are designed for 200 Ω differential impedance and  
require off-chip matching.  
Package Dimensions  
Typical part markings are shown in Figure 6. Package dimensions  
for the 16-pin QFN are shown in Figure 7, and tape and reel  
dimensions are provided in Figure 8.  
LO Buffers  
The LO buffers allow the input power of the SKY73049-350LF to  
be in the range of –10 to 0 dBm. The LO input frequency range is  
optimized for 200 to 5000 MHz, and could drive the mixer with  
both low-side and high-side LO injection. The single-ended LO  
port is internally matched to 50 Ω without the need for any  
external components.  
Package and Handling Information  
Instructions on the shipping container label regarding exposure to  
moisture after the container seal is broken must be followed.  
Otherwise, problems related to moisture absorption may occur  
when the part is subjected to high temperature during solder  
assembly.  
IF Output  
The SKY74039 has differential, high impedance open collector  
outputs (IF_OUT_N and IF_OUT_P) that need to be pulled up to  
supply voltage through RF chokes or through the center tap of a  
balun. The IF load for the mixer is provided externally. This  
flexible configuration enables the user to apply any external load,  
making IF_OUT_N and IF_OUT_P “broadband” outputs. The  
nominal value of this load is 200 Ω differential.  
THE SKY73049-350LF is rated to Moisture Sensitivity Level 1  
(MSL1) at 260 C. It can be used for lead or lead-free soldering.  
Care must be taken when attaching this product, whether it is  
done manually or in a production solder reflow environment.  
Production quantities of this product are shipped in a standard  
tape and reel format.  
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com  
January 2, 2014 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201130F  
2
DATA SHEET • SKY73049-350LF SINGLE DOWNCONVERSION MIXER  
Table 2. SKY73049-350LF Absolute Maximum Ratings  
Parameter  
Symbol  
Minimum  
Typical  
Maximum  
5.5  
Units  
V
Supply voltage  
Supply current  
RF input power  
LO input power  
VCC  
ICC  
3.0  
5.0  
200  
mA  
dBm  
dBm  
C  
PIN  
+10  
PLO  
TCASE  
+10  
Operating temperature  
–40  
–40  
+85  
Junction temperature  
+150  
+125  
C  
Storage temperature  
TSTG  
C  
Electrostatic discharge:  
ESD  
Human Body Model (HBM), Class 1B (Note 3)  
1000  
V
Note 1: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other  
parameters set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device.  
Note 2: Nominal thermal resistance (junction to case) is 5.1 C/W.  
Note 3: Applies to RF signal lines > 100 MHz, analog and RF lines < 100 MHz, digital lines, power supply lines, and ground pins.  
CAUTION: Although this device is designed to be as robust as possible, Electrostatic Discharge (ESD) can damage this device. This device  
must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body  
or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times.  
Table 3. SKY73049-350LF Recommended Operating Conditions  
Parameter  
RF frequency range  
Symbol  
Minimum  
Typical  
Maximum  
Units  
MHz  
MHz  
MHz  
V
fRF  
fLO  
fIF  
200  
5000  
LO frequency range  
IF frequency range  
Supply voltage  
RF IF  
50  
500  
5.25  
170  
VCC  
ICC  
PLO  
3.00  
5.00  
133  
0
Supply current  
mA  
LO input power  
–10  
dBm  
PwrDwn pin level:  
Mixer On  
Mixer Off  
VPWRDWN  
VPWRDWN  
0
VCC  
1
V
V
VCC –1  
PwrDwn pin current:  
Mixer On (current sink)  
Mixer Off (current source)  
IPWRDWN  
IPWRDWN  
50  
50  
70  
70  
μA  
μA  
Operating temperature  
TCASE  
–40  
+85  
C  
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com  
201130F • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • January 2, 2014  
3
DATA SHEET • SKY73049-350LF SINGLE DOWNCONVERSION MIXER  
Table 4. SKY73049-350LF Electrical Specifications (Note 1)  
(VCC = +5 V, TCASE = +25 °C, LO = 0 dBm, High Side Injection, IF = 100 MHz, Unless Otherwise Noted)  
Parameter  
Symbol  
Test Condition  
Min  
Typical  
Max  
Units  
Conversion gain  
G
@ 0.7 to 0.9 GHz  
6.4  
5.8  
5.4  
4.5  
7.6  
6.6  
6.2  
5.2  
dB  
dB  
dB  
dB  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz  
Noise Figure (Note 2)  
NF  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz  
14.1  
15.5  
16.0  
17.0  
16.0  
16.9  
17.3  
18.6  
dB  
dB  
dB  
dB  
3rd Order Input Intercept Point  
IIP3  
Tone space = 1 MHz,  
PIN = –15 dBm per tone  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz  
+24.0  
+24.6  
+24.8  
+23.9  
+26.4  
+29.0  
+27.8  
+27.1  
dBm  
dBm  
dBm  
dBm  
2nd Order Input Intercept Point  
IIP2  
Tone space = 50 MHz  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz  
+41.3  
+48.0  
+50.4  
+47.5  
+57.0  
+59.8  
+56.9  
+55.8  
dBm  
dBm  
dBm  
dBm  
1 dB Input Compression Point  
RF to IF isolation  
IP1dB  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz  
+2.9  
+4.4  
+4.9  
+6.3  
+5.4  
+6.5  
+6.9  
+7.9  
dBm  
dBm  
dBm  
dBm  
No filtering at IF output  
@ 0.7 GHz  
–30.0  
–28.2  
–33.9  
–26.3  
–27.0  
–25.2  
–30.5  
–23.0  
dBc  
dBc  
dBc  
dBc  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz (Note 3)  
LO leakage @ IF port  
LO leakage @ RF port  
2RF to 2LO  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz (Note 3)  
@ 3.6 GHz  
–55.6  
–37.7  
–37.1  
–34.9  
–38.9  
–25.3  
–23.9  
–20.2  
dBc  
dBc  
dBc  
dBc  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz  
–59.9  
–49.1  
–47.9  
–49.8  
–56.5  
–45.7  
–43.4  
–45.0  
dBc  
dBc  
dBc  
dBc  
2x2  
3x3  
PIN = –10 dBm  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz  
–75.4  
–67.1  
–61.8  
–66.2  
–64.2  
–59.4  
–57.6  
–61.6  
dBc  
dBc  
dBc  
dBc  
3RF to 3LO  
PIN = –10 dBm  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz  
–82.8  
–79.0  
–78.3  
–80.1  
–71.9  
–68.7  
–68.0  
–70.0  
dBc  
dBc  
dBc  
dBc  
RF port input return loss  
LO port input return loss  
Total supply current  
ZIN_RF  
ZIN_LO  
IVCC  
No matching  
No matching  
–13  
–14  
133  
–12  
–12  
155  
dB  
dB  
mA  
Note 1: Performance is guaranteed only under the conditions listed in this Table.  
Note 2: Characterized in an RF screen room.  
Note 3: RF tones at IF output measured with an off-chip balun except at 0.7 to 0.9 GHz for RF to IF isolation.  
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com  
January 2, 2014 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201130F  
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DATA SHEET • SKY73049-350LF SINGLE DOWNCONVERSION MIXER  
Table 5. SKY73049-350LF Electrical Specifications (Note 1)  
(VCC = +3.3 V, TCASE = +25 °C, LO = 0 dBm, High Side Injection, IF = 100 MHz, Unless Otherwise Noted)  
Parameter  
Symbol  
Test Condition  
Min  
Typical  
Max  
Units  
Conversion gain  
G
@ 0.7 to 0.9 GHz  
7.4  
6.3  
6.0  
5.7  
dB  
dB  
dB  
dB  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz  
Noise Figure (Note 2)  
NF  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz  
13.0  
14.0  
14.5  
15.0  
dB  
dB  
dB  
dB  
3rd Order Input Intercept Point  
IIP3  
Tone space = 1 MHz,  
PIN = –15 dBm per tone  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz  
+24  
+23  
+23  
+20  
dBm  
dBm  
dBm  
dBm  
2nd Order Input Intercept Point  
IIP2  
Tone space = 50 MHz  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz  
+53  
+53  
+54  
+48  
dBm  
dBm  
dBm  
dBm  
1 dB Input Compression Point  
RF to IF isolation  
IP1dB  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz  
+3.0  
+4.5  
+5.0  
+5.0  
dBm  
dBm  
dBm  
dBm  
No filtering at IF output  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz (Note 3)  
–30  
–31  
–32  
–25  
dBc  
dBc  
dBc  
dBc  
LO leakage @ IF port  
LO leakage @ RF port  
2RF to 2LO  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz (Note 3)  
@ 3.6 GHz  
–33  
–35  
–38  
–31  
dBc  
dBc  
dBc  
dBc  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz  
–60  
–60  
–45  
–45  
dBc  
dBc  
dBc  
dBc  
2x2  
3x3  
PIN = –12 dBm  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz  
–70  
–70  
–65  
–69  
dBc  
dBc  
dBc  
dBc  
3RF to 3LO  
PIN = –12 dBm  
@ 0.7 to 0.9 GHz  
@ 1.9 to 2.2 GHz  
@ 2.6 to 2.8 GHz  
@ 3.6 GHz  
–80  
–80  
–77  
–80  
dBc  
dBc  
dBc  
dBc  
RF port input return loss  
LO port input return loss  
Total supply current  
ZIN_RF  
ZIN_LO  
IVCC  
No matching  
No matching  
–13  
–14  
122  
dB  
dB  
mA  
Note 1: Performance is verified by characterization.  
Note 2: Characterized in an RF screen room  
Note 3: RF tones at IF output measured with an off-chip balun except at 0.7 to 0.9 GHz for RF to IF isolation.  
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com  
201130F • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • January 2, 2014  
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DATA SHEET • SKY73049-350LF SINGLE DOWNCONVERSION MIXER  
4
VCC  
3
+
C112  
100 pF  
C210  
10 μF  
C63  
330 μF  
J1  
2
1
J100  
1-Pin  
J103  
1-Pin  
J107  
1-Pin  
×
×
4-Header  
SW300  
2
1
3
R128  
0 Ω  
6
R301  
10 kΩ  
×
R109  
0 Ω  
×
×
5
4
R126  
0 Ω  
VCC  
C182  
0.1 μF  
C130  
100 pF  
C131  
100 pF  
R302  
1.8 kΩ  
R137  
0 Ω  
VCC  
R303  
200 Ω  
C117  
100 pF  
C133  
0.1 μF  
16  
15  
14  
13  
C102  
DNI  
C106  
DNI  
1
2
3
4
12  
GND_MIX  
RF_IN  
VCC4  
R129  
C128  
R131  
0 Ω  
DNI  
1000 pF  
J110  
11  
10  
9
VCC  
VCC  
R103  
IF_OUT_P  
IF_OUT_N  
GND_IF  
RF Input  
0 Ω  
4
5
6
3
2
1
C109  
DNI  
C104  
OUT–  
CT  
IN–  
N/C  
IN+  
DNI  
R105  
DNI  
RF_COM  
VCC1  
×
J142  
C129  
1000 pF  
R125  
0 Ω  
OUT+  
IF Output  
R136  
DNI  
R104  
0 Ω  
VCC  
C105  
DNI  
C181  
0.1 μF  
C125  
100 pF  
C103  
DNI  
VCC  
5
6
7
8
R187  
0 Ω  
R
FILT  
(Note 1)  
R130  
0 Ω  
C134  
1000 pF  
VCC  
C132  
100 pF  
C178  
0.1 μF  
C184  
0.1 μF  
C126  
100 pF  
R132  
0 Ω  
J109  
LO Input  
C108  
DNI  
C110  
DNI  
C135  
1000 pF  
Note 1: Value of filter resistor is 13 Ω for 5 V operation,  
or 0 Ω for 3.3V operation.  
S2505  
Figure 3. SKY73049-350LF Evaluation Board Typical Application Schematic  
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com  
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DATA SHEET • SKY73049-350LF SINGLE DOWNCONVERSION MIXER  
J142  
J109  
J1  
J110  
S2500  
Figure 4. SKY73049-350LF Evaluation Board Assembly Drawing  
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com  
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DATA SHEET • SKY73049-350LF SINGLE DOWNCONVERSION MIXER  
Layer 1: Top – Metal  
Layer 2: Ground  
Layer 3: Power Plane  
Layer 4: Solid Ground Plane  
S2501  
Figure 5. SKY73049-350LF Evaluation Board Layer Detail  
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com  
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DATA SHEET • SKY73049-350LF SINGLE DOWNCONVERSION MIXER  
Pin 1  
Indicator  
Skyworks Part #  
Lot #  
Figure 6. Typical Part Markings  
(Top View)  
1.70 +0.10/–0.15  
C–  
(0.20)  
Seating Plane  
–A–  
3.00  
–A–  
O.225 x 45o  
Pin 1 Indicator  
Exposed Pad  
0.85  
–B–  
0.02 + 0.03/–0.02  
Pin 1  
Indicator  
0.85  
–B–  
1.70 +0.10/–0.15  
3.00  
0.15 C  
2X  
Detail B  
2
16X  
0.08 C  
Detail A  
0.15 C  
0.75 0.05  
0.10  
2X  
C
Top View  
Side View  
Bottom View  
0.40 0.10  
0.5  
0.25  
0.25 +0.05/–0.07  
0.10 M C A B  
0.05 M C  
Detail A  
Scale: 20X  
16 Places  
Detail B  
Scale: 10X  
All measurements are in millimeters.  
Dimensioning and tolerancing according to ASME Y14.5M-1994.  
Coplanarity applies to the exposed heat sink slug as well as the terminals..  
Plating requirement per source control drawing (SCD) 2504.  
S1692  
Figure 7. SKY73049-350LF 16-Pin QFN Package Dimensions  
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com  
201130F • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • January 2, 2014  
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DATA SHEET • SKY73049-350LF SINGLE DOWNCONVERSION MIXER  
8.00  
2.00 0.05  
(See Note 3)  
ø1.50 Min.  
Pin 1  
Indicator  
ø1.5 +0.1/–0  
4.00  
(See Note 1)  
A
0.30 0.05  
1.75 0.10  
R0.30 Max  
5.50 0.05  
(See Note 3)  
12.0 0.30  
3.30 (Bo)  
1.10 (Ko)  
A
3.30 (Ao)  
A
0.25  
R0.25  
Notes:  
1. Sprocket hole pitch cumulative tolerance: 0.2.  
2. Carrier tape: black conductive polystyrene.  
3. Pocket position relative to sprocket hole, measure  
as true position of pocket, not pocket hole.  
4. All dimensions are in millimeters.  
Y0506  
Figure 8. SKY73049-350LF Tape and Reel Dimensions  
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com  
January 2, 2014 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201130F  
10  
DATA SHEET • SKY73049-350LF SINGLE DOWNCONVERSION MIXER  
Ordering Information  
Model Name  
Manufacturing Part Number  
Evaluation Board Part Number  
TW18-D260  
SKY73049-350LF 200-5000 MHz single downconversion SKY73049-350LF  
mixer  
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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com  
201130F • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • January 2, 2014  
11  

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