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DATA SHEET
SKY73032-11: 700 – 1000 MHz High Gain and Linearity
Single Downconversion Mixer
Applications
x 2G/3G base station transceivers:
 GSM/EDGE, CDMA, UMTS/WCDMA, iDEN
x Land mobile radio
x ISM band transceivers
x High performance radio links
x RF identification
Features
x Operating frequency range: 700 to 1000 MHz
x IF frequency range: 40 to 300 MHz
x Conversion gain: 9.5 dB
x Input IP3: +27.0 dBm
x Output IP3: +36.5 dBm
x Noise figure: 8.3 dB
x Integrated LO drivers
x Integrated low loss RF baluns
x High linearity IF amplifiers
x On-chip SPDT LO switch (greater than 40 dB LO-to-LO isolation)
x Small, MCM (20-pin, 5 x 5 mm) Pb-free package (MSL3, 260 qC
per JEDEC J-STD-020)
Description
The SKY73032-11 is a fully integrated single mixer that includes
Local Oscillator (LO) drivers, an LO switch, high linearity mixers,
and large dynamic range Intermediate Frequency (IF) amplifiers.
Low loss RF baluns have also been included to reduce design
complications and lower system cost.
The SKY73032-11 features an input IP3 of +27.0 dBm and a
Noise Figure (NF) of 8.3 dB, making the device an ideal solution
for high dynamic range systems such as 2G/3G base station
transceivers. The LO switch provides more than 40 dB of isolation
between LO inputs and supports the switching time required for
GSM/EDGE base stations.
The SKY73032-11 is manufactured using a robust silicon BiCMOS
process and has been designed for optimum long-term reliability.
The SKY73032-11 single downconversion mixer is provided in a
compact, 20-pin 5 x 5 mm Multi-Chip Module (MCM). 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 offers lead (Pb)-free RoHS (Restriction of
Hazardous Substances) compliant packaging.
RF
LO1
LO2
LO_SEL
VCC_LO
Figure 1. SKY73032-11 Block Diagram
S937
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200625E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 24. 2009
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DATA SHEET • SKY73032-11 DOWNCONVERSION MIXER
VCC_IFRF 1
RF 2
N/C 3
GND 4
GND 5
20 19 18 17 16
15 LO2
14 GND
13 GND
12 N/C
11 LO1
6 7 8 9 10
Figure 2. SKY73032-11 Pinout – 20-Pin MCM
S938
Table 1. SKY73032-11 Signal Descriptions
Pin # Name
Description
1 VCC_IFRF
IF and RF DC supply, +5V
2 RF
RF input
3 N/C
No connection
4 GND
Ground
5 GND
Ground
6 VCC_LO
LO DC supply, +5V
7 N/C
No connection
8 VCC_LOSW
LO switch DC supply, +5V
9 LO_SEL
LO select switch control
10 GND
Ground
Pin #
11
12
13
14
15
16
17
18
19
20
Name
LO1
N/C
GND
GND
LO2
N/C
GND
IF–
IF+
RXIF
Description
LO1 input
No connection
Ground
Ground
LO2 input
No connection
Ground
Negative IF output
Positive IF output
IF bias adjust
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET • SKY73032-11 DOWNCONVERSION MIXER
Functional Description
The SKY73032-11 is a high gain single mixer, optimized for base
station receiver applications. The device consists of a low loss RF
balun, high linearity passive mixer, and a low noise IF amplifier.
An LO amplifier is also included that allow the SKY73032-11 to
connect directly to the output of a Voltage Controlled Oscillator
(VCO). This eliminates the extra gain stages needed by most
discrete passive mixers. A Single Pole, Double Throw (SPDT)
switch has been included to select between two different LO
inputs (LO1 and LO2) for frequency hopping applications such as
GSM.
RF Baluns and Passive Mixer
The RF baluns provide a single ended input, which can easily be
matched to 50 : using a simple external matching circuit. The RF
baluns offer very low loss, and excellent amplitude and phase
balance.
The high linearity SKY73032-11 is a passive, double balanced
mixer that provides a very low conversion loss, and excellent 3rd
Order Input Insertion Point (IIP3).
Addtionally, the balanced nature of the mixer provides for high
port-to-port isolation.
LO Buffers and SPDT LO Switch
The LO buffers allow the input power of the SKY73032-11 to be in
the range of r6 dBm. The LO section is optimized for high-side
LO injection. However, each of the two LOs can be driven over a
wide frequency range with only slight degradation in
performance.
A high isolation SPDT switch allows the SKY73032-11 to be used
for frequency hopping applications. This switch provides greater
than 40 dB of LO1 to LO2 isolation:
LO_SEL Input
High
Low
LO Path Selected
LO1 (pin 11) enabled
LO2 (pin 15) enabled
For applications that do not require frequency hopping, LO_SEL is
fixed to one state and the appropriate LO input is used. An internal
pull-down resistor enables the LO2 input.
IF Amplifier
The SKY73032-11 includes high dynamic range IF amplifiers that
follow the passive mixers in the signal path. The outputs require a
supply voltage connection using inductive chokes. These choke
inductors should be high-Q and have the ability to handle 200 mA
or greater.
A simple matching network allows the output ports to be matched
to a balanced 200 : impedance. The IF amplifiers are optimized
for IF frequencies between 40 and 300 MHz. The IF amplifiers can
be operated outside of this range, but with a slight degradation in
performance.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY73032-11 are provided
in Table 2 and the recommended operating conditions in Table 3.
Electrical characteristics for the SKY73032-11 are provided in
Table 4.
Typical performance characteristics for the SKY73032-11 are
illustrated in Figures 3 through 19.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200625E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 24. 2009
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DATA SHEET • SKY73032-11 DOWNCONVERSION MIXER
Table 2. SKY73032-11 Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Minimum
Maximum
Units
Supply voltage, +5 V
VCC
4.5 5.5
V
Supply current
ICC
240 mA
RF input power
PRF
+20.0
dBm
LO input power
PLO
+20.0
dBm
Operating case temperature
TC
–40 +85
qC
Junction temperature (Note 2)
TJ
+150
qC
Storage case temperature
TSTG
–40 +125
qC
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 center ground pad) is 5.1 qC/W.
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. SKY73032-11 Recommended Operating Conditions
Parameter
Symbol
Minimum
Typical
Maximum
Supply voltage, +5 V VCC 4.75 5.00 5.25
Supply current
ICC
210
LO input power
PLO –6.0 0 +6.0
LO select input:
high
low
LO_SELH
LO_SELL
2.2
0.8
Operating case temperature
TC
–40
+85
RF frequency range FRF 700
1000
LO frequency range (Note 1)
FLO
900
1250
IF frequency range
FIF
40
300
Note 1: The SKY73032-11 has been optimized for high side LO injection. However, the LO can be used outside of the specified frequency range with degraded performance.
Units
V
mA
dBm
V
V
qC
MHz
MHz
MHz
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET • SKY73032-11 DOWNCONVERSION MIXER
Table 4. SKY73032-11 Electrical Specifications (Note 1)
(VCC = +5 V, TA = +25 qC, LO = 0 dBm, RF Frequency = 900 MHz, IF Frequency = 200 MHz, LO Frequency = 1100 MHz, Unless Otherwise
Noted)
Parameter
Symbol
Test Condition
Min Typical Max
Units
Conversion gain
G
fRF = 824 to 915 MHz,
8.2
9.5
TA = 25 °C, PLO = –3 to
+3 dBm
dB
Gain variation over temperature
TA = –40 to +85 °C
±0.6 dB
Noise Figure
NF TA = 25 °C, PLO = –3 to
+3 dBm, VCC = 4.75 to
5.25 V, IF = 200 MHz
8.3
dB
Noise Figure variation over temperature
TA = –40 to +85 °C
±0.8 dB
Noise Figure with a blocker signal
NFBLK
Blocking signal input
18
dB
power = +8 dBm
Third order input intercept point
IIP3 fRF = 900 MHz and
+24.7
+27.0
900.8 MHz,
PRF = –10 dBm/tone,
VCC = 4.75 to 5.25 V
dBm
Input IP3 variation over temperature
TA = –40 to +85 °C
±0.3 dB
Third order output intercept point
OIP3 fRF = 900 MHz and
900.8 MHz,
PRF = –10 dBm/tone,
VCC = 4.75 to 5.25 V
+36.5
dBm
2RF – 2LO
2x2 PRF = –10 dBm
–68.5
–63
dBc
3RF – 3LO
3x3 PRF = –10 dBm
–80 –70 dBc
Input 1 dB compression point
IP1dB
+11.0
+13.3
dBm
Output 1 dB compression point
OP1dB
+22.8
dBm
LO1-to-LO2 isolation
40 dB
RF to IF isolation
38 48
dB
LO leakage:
@ RF port
@ IF port
–59 –42 dBm
–34 –23 dBm
RF port input return loss
ZIN_RF
With external matching
components
14
dB
LO port input return loss
ZIN_LO
With external matching
components
14
dB
IF port output return loss
ZOUT_IF
With external matching
components
14
dB
Note 1: Performance is guaranteed only under the conditions listed in this Table and is not guaranteed over the full operating or storage temperature ranges. Operation at elevated
temperatures may reduce reliability of the device.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200625E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • August 24. 2009
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