DATA SHEET
SKY73049-350LF: 200 to 5000 MHz Single Downconversion
Mixer
Applications
2G, 2.5G, 3G, and 4G base station transceivers: GSM, EDGE,
CDMA, WCDMA, LTE, WiMAX
General purpose RF systems
Wireless infrastructure
RF_IN
IF_OUT_P
IF_OUT_N
Features
RF frequency operation range: 200 to 5000 MHz
High-side or low-side injection
Integrated LO driver
Wideband integrated 50
Ω
matched LO and RF ports
+3.3 V or +5 V operation
Small, QFN (16-pin, 3 x 3 mm) package (MSL1, 260
C
per
JEDEC J-STD-020)
LO_IN
S1627
Figure 1. SKY73049-350LF Block Diagram
Description
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 3
rd
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.
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.
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.
RBIAS_EXT2
RBIAS_EXT1
14
16
15
13
PWR_DWN
VCC5
GND_MIX
RF_IN
RF_COM
VCC1
1
2
3
4
12
11
10
9
VCC4
IF_OUT_P
IF_OUT_N
GND_IF
5
6
7
8
VCC2
VCC3
LO_COM
LO_IN
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 #
1
2
3
4
5
6
7
8
Note:
Name
GND_MIX
RF_IN
RF_COM
VCC1
VCC2
VCC3
LO_IN
LO_COM
Description
Ground for mixer
RF input for mixer
RF common (AC ground) for mixer input
Supply for mixer
Supply for mixer
Supply for mixer
LO input
LO common (AC ground) for LO input
Pin #
9
10
11
12
13
14
15
16
Name
GND_IF
IF_OUT_N
IF_OUT_P
VCC4
PWR_DWN
RBIAS_EXT1
VCC5
RBIAS_EXT2
Ground for IF
Description
Negative IF output
Positive IF output
Supply for mixer
Power down control
External bias resistor for mixer
Supply for mixer
External bias resistor for LO chain
Exposed pad must be grounded.
Technical Description
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.
RF Active Mixer
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 IF outputs are designed for 200
Ω
differential impedance and
require off-chip matching.
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.
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.
Electrical and Mechanical Specifications
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).
Evaluation Board Description
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.
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.
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.
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
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January 2, 2014 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201130F
DATA SHEET • SKY73049-350LF SINGLE DOWNCONVERSION MIXER
Table 2. SKY73049-350LF Absolute Maximum Ratings
Parameter
Supply voltage
Supply current
RF input power
LO input power
Operating temperature
Junction temperature
Storage temperature
Electrostatic discharge:
Human Body Model (HBM), Class 1B (Note 3)
T
STG
ESD
1000
V
–40
V
CC
I
CC
P
IN
P
LO
T
CASE
–40
Symbol
Minimum
3.0
Typical
5.0
Maximum
5.5
200
+10
+10
+85
+150
+125
Units
V
mA
dBm
dBm
C
C
C
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
LO frequency range
IF frequency range
Supply voltage
Supply current
LO input power
PwrDwn pin level:
Mixer On
Mixer Off
PwrDwn pin current:
Mixer On (current sink)
Mixer Off (current source)
Operating temperature
f
RF
f
LO
f
IF
V
CC
I
CC
P
LO
VPWRDWN
VPWRDWN
Symbol
Minimum
200
Typical
Maximum
5000
Units
MHz
MHz
RF ± IF
50
3.00
5.00
133
–10
0
0
V
CC
50
50
–40
1
500
5.25
170
MHz
V
mA
dBm
V
V
μA
μA
C
V
CC
–1
I
PWRDWN
IPWRDWN
70
70
+85
T
CASE
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)
(V
CC
= +5 V, T
CASE
= +25
°C,
LO = 0 dBm, High Side Injection, IF = 100 MHz, Unless Otherwise Noted)
Parameter
Conversion gain
G
Symbol
Test Condition
@ 0.7 to 0.9 GHz
@ 1.9 to 2.2 GHz
@ 2.6 to 2.8 GHz
@ 3.6 GHz
@ 0.7 to 0.9 GHz
@ 1.9 to 2.2 GHz
@ 2.6 to 2.8 GHz
@ 3.6 GHz
Tone space = 1 MHz,
P
IN
= –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
2
nd
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
1 dB Input Compression Point
IP1dB
@ 0.7 to 0.9 GHz
@ 1.9 to 2.2 GHz
@ 2.6 to 2.8 GHz
@ 3.6 GHz
No filtering at IF output
@ 0.7 GHz
@ 1.9 to 2.2 GHz
@ 2.6 to 2.8 GHz
@ 3.6 GHz (Note 3)
LO leakage @ IF port
@ 0.7 to 0.9 GHz
@ 1.9 to 2.2 GHz
@ 2.6 to 2.8 GHz (Note 3)
@ 3.6 GHz
@ 0.7 to 0.9 GHz
@ 1.9 to 2.2 GHz
@ 2.6 to 2.8 GHz
@ 3.6 GHz
2x2
P
IN
= –10 dBm
@ 0.7 to 0.9 GHz
@ 1.9 to 2.2 GHz
@ 2.6 to 2.8 GHz
@ 3.6 GHz
3RF to 3LO
3x3
P
IN
= –10 dBm
@ 0.7 to 0.9 GHz
@ 1.9 to 2.2 GHz
@ 2.6 to 2.8 GHz
@ 3.6 GHz
RF port input return loss
LO port input return loss
Total supply current
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.
Min
6.4
5.8
5.4
4.5
Typical
7.6
6.6
6.2
5.2
14.1
15.5
16.0
17.0
Max
Units
dB
dB
dB
dB
Noise Figure (Note 2)
NF
16.0
16.9
17.3
18.6
dB
dB
dB
dB
3
rd
Order Input Intercept Point
IIP3
+24.0
+24.6
+24.8
+23.9
+26.4
+29.0
+27.8
+27.1
dBm
dBm
dBm
dBm
+41.3
+48.0
+50.4
+47.5
+2.9
+4.4
+4.9
+6.3
+57.0
+59.8
+56.9
+55.8
+5.4
+6.5
+6.9
+7.9
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
RF to IF isolation
–30.0
–28.2
–33.9
–26.3
–55.6
–37.7
–37.1
–34.9
–59.9
–49.1
–47.9
–49.8
–27.0
–25.2
–30.5
–23.0
–38.9
–25.3
–23.9
–20.2
–56.5
–45.7
–43.4
–45.0
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
LO leakage @ RF port
2RF to 2LO
–75.4
–67.1
–61.8
–66.2
–64.2
–59.4
–57.6
–61.6
dBc
dBc
dBc
dBc
–82.8
–79.0
–78.3
–80.1
–13
–14
133
–71.9
–68.7
–68.0
–70.0
–12
–12
155
dBc
dBc
dBc
dBc
dB
dB
mA
Z
IN
_
RF
Z
IN
_
LO
I
VCC
No matching
No matching
Note 1:
Performance is guaranteed only under the conditions listed in this Table.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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January 2, 2014 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201130F
DATA SHEET • SKY73049-350LF SINGLE DOWNCONVERSION MIXER
Table 5. SKY73049-350LF Electrical Specifications (Note 1)
(V
CC
= +3.3 V, T
CASE
= +25
°C,
LO = 0 dBm, High Side Injection, IF = 100 MHz, Unless Otherwise Noted)
Parameter
Conversion gain
G
Symbol
Test Condition
@ 0.7 to 0.9 GHz
@ 1.9 to 2.2 GHz
@ 2.6 to 2.8 GHz
@ 3.6 GHz
@ 0.7 to 0.9 GHz
@ 1.9 to 2.2 GHz
@ 2.6 to 2.8 GHz
@ 3.6 GHz
Tone space = 1 MHz,
P
IN
= –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
2
nd
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
1 dB Input Compression Point
IP1dB
@ 0.7 to 0.9 GHz
@ 1.9 to 2.2 GHz
@ 2.6 to 2.8 GHz
@ 3.6 GHz
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)
LO leakage @ IF port
@ 0.7 to 0.9 GHz
@ 1.9 to 2.2 GHz
@ 2.6 to 2.8 GHz (Note 3)
@ 3.6 GHz
@ 0.7 to 0.9 GHz
@ 1.9 to 2.2 GHz
@ 2.6 to 2.8 GHz
@ 3.6 GHz
2x2
P
IN
= –12 dBm
@ 0.7 to 0.9 GHz
@ 1.9 to 2.2 GHz
@ 2.6 to 2.8 GHz
@ 3.6 GHz
3RF to 3LO
3x3
P
IN
= –12 dBm
@ 0.7 to 0.9 GHz
@ 1.9 to 2.2 GHz
@ 2.6 to 2.8 GHz
@ 3.6 GHz
RF port input return loss
LO port input return loss
Total supply current
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.
Min
Typical
7.4
6.3
6.0
5.7
13.0
14.0
14.5
15.0
Max
Units
dB
dB
dB
dB
dB
dB
dB
dB
Noise Figure (Note 2)
NF
3
rd
Order Input Intercept Point
IIP3
+24
+23
+23
+20
dBm
dBm
dBm
dBm
+53
+53
+54
+48
+3.0
+4.5
+5.0
+5.0
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
RF to IF isolation
–30
–31
–32
–25
–33
–35
–38
–31
–60
–60
–45
–45
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
LO leakage @ RF port
2RF to 2LO
–70
–70
–65
–69
dBc
dBc
dBc
dBc
–80
–80
–77
–80
–13
–14
122
dBc
dBc
dBc
dBc
dB
dB
mA
Z
IN
_
RF
Z
IN
_
LO
I
VCC
No matching
No matching
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
5
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