DATA SHEET
SKY73089-11: 1200 – 1700 MHz High Gain and Linearity
Diversity Downconversion Mixer
Applications
•
2G/3G base station transceivers:
−
GSM/EDGE, CDMA, UMTS/WCDMA
•
Land mobile radio
•
High performance radio links
Description
The SKY73089-11 is a fully integrated diversity 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 SKY73089-11 features an input IP3 of
+26.8
dBm and a
Noise Figure (NF) of 9.3 dB, making the device an ideal solution
for high dynamic range systems such as 2G/3G base station
receivers. 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 SKY73089-11 is manufactured using a robust silicon BiCMOS
process and has been designed for optimum long-term reliability.
The SKY73089-11 diversity downconversion mixer is provided in
a compact, 36-pin 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.
Features
•
Operating frequency range: 1200
to
1700 MHz
•
IF frequency range: 50 to 500 MHz
•
Conversion gain: 9.3 dB
•
Input IP3:
+26.8
dBm
•
Output IP3: +36.1 dBm
•
Noise Figure: 9.3 dB
•
Integrated LO drivers
•
Integrated low loss RF baluns
•
High linearity IF amplifiers
•
On-chip
SPDT LO switch (greater than 40 dB LO-to-LO isolation)
•
Small, MCM (36-pin, 6 x 6 mm) package (MSL3, 260
°C
per
JEDEC J-STD-020)
Figure 1. SKY73089-11 Block Diagram
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201180D • Skyworks Proprietary
Information
• Products and Product Information are Subject to Change Without Notice • April 24, 2012
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DATA SHEET • SKY73089-11 DOWNCONVERSION MIXER
Figure 2. SKY73089-11 Pinout – 36-Pin MCM
(Top View)
Table 1. SKY73089-11 Signal Descriptions
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
RFA
NC
GND
VCC1
GND
VCC2
GND
NC
RFB
VCC3
NC
GND
IFB+
IFB–
NC
VCC4
RIFB
NC
Name
No connect
Ground
DC supply, +5 V
Ground
DC supply, +5 V
Ground
No connect
RF channel B input
DC supply, +5 V
No connect
Ground
IF channel B positive output
IF channel B negative output
No connect
DC supply, +5 V
IF channel B bias control
No connect
Description
RF channel A input
Pin #
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
LO1
GND
VCC5
GND
LO_SEL
GND
GND
GND
LO2
NC
RIFA
VCC6
NC
IFA+
IFA–
GND
NC
VCC7
Name
Ground
DC supply, +5 V
Ground
Local oscillator switch select
Ground
Ground
Ground
Local oscillator #2 input
No connect
IF channel A bias control
DC supply, +5 V
No connect
IF channel A positive output
IF channel A negative output
Ground
No connect
DC supply, +5 V
Description
Local oscillator #1 input
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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April 24, 2012 • Skyworks Proprietary
Information
• Products and Product Information are Subject to Change Without Notice • 201180D
DATA SHEET • SKY73089-11 DOWNCONVERSION MIXER
Functional Description
The SKY73089-11 is a high gain diversity mixer, optimized for
base station receiver applications. The device consists of two
diversity channels, each consisting of a low loss RF balun, high
linearity passive mixer, and a low noise IF amplifier.
LO amplifiers are also included that allow the SKY73089-11 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 for frequency hopping applications (i.e., GSM).
RF Baluns and Passive Mixer
The RF baluns provide a single ended input, which can easily be
matched to 50
Ω
using a simple matching circuit. The RF
baluns offer very low loss and excellent amplitude and phase
balance.
The high linearity mixer is a passive, double balanced mixer that
provides a very low insertion loss, and excellent 3
rd
Order Input
Insertion Point (IIP3) and linearity performance.
Additionally, the balanced nature of the mixer provides for
excellent port-to-port isolation.
LO Buffers and SPDT LO Switch
The LO buffers allow the input power of the SKY73089-11 to be
programmed in the range of
–6 to +6
dBm. The LO section has
been optimized for high-side LO injection. However, the LO can
be driven over a wide frequency range with only slight
degradation in performance.
A high isolation SPDT switch allows the SKY73089-11 to be
used for frequency hopping applications. This switch provides
greater than 60 dB of LO1 to LO2 isolation:
LO_SEL Logic:
High
Low
State:
LO1 enabled
LO2 enabled
For applications that do not require frequency hopping, LO_SEL
is fixed to one state and the appropriate LO input is used.
IF Amplifier
The SKY73089-11 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
Ω
impedance. The IF amplifiers are
optimized for IF frequencies between 50 and 500 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 SKY73089-11 are
provided in Table 2. The recommended operating conditions are
specified in Table 3 and electrical specifications are provided in
Table 4.
Spurious suppression measurements are provided in Table 5.
Typical performance characteristics of the SKY73089-11 are
illustrated in Figures 3 through
29.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201180D • Skyworks Proprietary
Information
• Products and Product Information are Subject to Change Without Notice • April 24, 2012
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DATA SHEET • SKY73089-11 DOWNCONVERSION MIXER
Table 2. SKY73089-11 Absolute Maximum Ratings
Parameter
Supply voltage, +5 V (VCC1
–
VCC7)
Supply current
RF input power
LO input power
Operating case temperature
Junction temperature
Storage case temperature
VCC
I
CC
P
RF
P
LO
T
C
T
J
T
STG
–40
–40
0
Symbol
Minimum
4.5
Typical
5.0
370
Maximum
5.5
430
+20
+20
+85
+150
+125
Units
V
mA
dBm
dBm
°C
°C
°C
Notes:
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.
Nominal thermal resistance (junction to center ground pad) is 5.1
°C/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. SKY73089-11 Recommended Operating Conditions
Parameter
RF frequency range
LO frequency range (Note 1)
IF frequency range
Supply voltage, +5 V (VCC1
–
VCC7)
Supply current
LO input power
LO select logic:
high
low
Operating case temperature
F
RF
F
LO
F
IF
VCC
I
CC
P
LO
LO_SEL
H
LO_SEL
L
T
C
–6
2.2
0.8
–40
+85
Symbol
Minimum
1200
1250
50
4.75
5.00
370
0
+6
Typical
Maximum
1700
2150
450
5.25
Units
MHz
MHz
MHz
V
mA
dBm
V
V
°C
Note 1:
The SKY73089-11 has been optimized for high-side LO injection. However, the LO can be used outside of the specified frequency range with degraded performance.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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April 24, 2012 • Skyworks Proprietary
Information
• Products and Product Information are Subject to Change Without Notice • 201180D
DATA SHEET • SKY73089-11 DOWNCONVERSION MIXER
Table 4. SKY73089-11 Electrical Specifications (Note 1)
(Voltage Supply = +5 V, T
C
= +25
°C,
LO = 0 dBm, RF Frequency = 1445 MHz, IF Frequency = 350 MHz, LO Frequency = 1795 MHz, Unless
Otherwise Noted)
Parameter
Conversion gain
Conversion gain variation over temperature
Noise Figure
Noise Figure variation over temperature
Noise Figure with a blocker signal
Third order input intercept point
G
G
NF
NF
NF
BLK
IIP3
–40
°C to +85 °C
Blocking signal input
power = +8 dBm
F
RF
= 1445 and
1445.8 MHz,
P
RF
=
–10
dBm/each tone
–40
°C to +85 °C
F
RF
= 1445 and
1445.8 MHz,
P
RF
=
–10
dBm/each tone
P
RF
=
–10
dBm
P
RF
=
–10
dBm
+11.7
–40
°C to +85 °C
+24.0
+26.8
–40
°C to +85 °C
Symbol
Test Condition
Min
8.6
Typical
9.3
±0.6
9.3
±0.8
25
11.0
Max
Units
dB
dB
dB
dB
dB
dBm
Third order input intercept point variation
over temperature
Third order output intercept point
IIP3
OIP3
±0.5
+36.1
dB
dBm
2LO – 2RF
3LO
–
3RF
Input 1 dB compression point
Input 1 dB compression point variation over
temperature
Output 1 dB compression point
LO1 to LO2 isolation
Channel-to-channel isolation
RF to IF isolation
LO leakage:
1xLO to RF port
2xLO to RF port
3xLO to RF port
4xLO to RF port
1xLO to IF port
LO_SEL input
LO switching time
RF port input return loss
LO port input return loss
IF port input return loss
2x2
3x3
IP1dB
IP1dB
OP1dB
–71
–83
+13.9
±0.6
+22.2
40
46
60
49
54
67
–28
–22
–52
–68
–62
–20
+150
–60
–70
dBc
dBc
dBm
dB
dBm
dB
dB
dB
–25
–20
–32
–50
–30
+250
1.0
dBm
dBm
dBm
dBm
dBm
µA
µs
dB
dB
dB
Z
IN
_
RF
Z
IN
_
LO
Z
OUT
_
IF
With external matching
components
With external matching
components
With external matching
components
14
14
14
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
201180D • Skyworks Proprietary
Information
• Products and Product Information are Subject to Change Without Notice • April 24, 2012
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