Download SKY42068-355LF 数据资料DataSheet下载

DATA SHEET
SKY42068-355LF: 400-1000 MHz High Dynamic Range Active
Mixer
Applications
RF
RF Balun
 GSM/EDGE/CDMA/AMPS/TETRA
 Mobile radio systems
LO_1
 Industrial, Scientific, Medical (ISM) band applications
LO_2
IF
LO_SEL
S325
Features
 High, 3rd Order Input Intercept Point (IIP3) mixer
Figure 1. SKY42068-355LF Block Diagram
 Wideband RF input frequency range (400 to 1000 MHz)
 CMOS-compatible control interface
Description
 +5 V supply operation
The SKY42068-355LF is an integrated, high-dynamic range lownoise receiver down converter. It includes a double-balanced
active mixer, Local Oscillator (LO) amplifiers, and dual LO inputs
selected by an external switch interface. The LO switch function is
managed using an externally controlled CMOS-compatible
interface.
GND
NC
NC
GND
20
19
18
17
16
15
NC
GND
2
14
NC
LO_SEL
3
13
NC
GND
4
12
IF+
LO_2
5
11
IF–
6
7
8
9
10
GND
1
RF–
LO_1
RF+
Skyworks offers lead (Pb)-free, RoHS (Restriction of
Hazardous Substances) compliant packaging.
Figure 1 shows a functional block diagram for the SKY42068355LF. The 20-pin Quad Flat No-Lead (QFN) device package and
pinout are shown in Figure 2.
GND
 QFN (20-pin, 5 x 5 mm) package (MSL3, 260 C per JEDEC JSTD-020)
VDD
 Supports frequency hopping applications
GND
 –40 C to +85 C operating range
S326
Figure 2. SKY42068-355LF Pinout – 20-Pin QFN
(Top View)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
1
103210E • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • June 22, 2010
DATA SHEET • SKY42068-355LF ACTIVE MIXER
Table 1. SKY42068-355LF Signal Descriptions
Pin #
Name
Description
Pin #
Name
Description
1
LO_1
Local oscillator 1 input
11
IF–
Negative IF output
2
GND
Ground
12
IF+
Positive IF output
3
LO_SEL
Select control for LO_1 and LO_2
13
NC
No connection
4
GND
Ground
14
NC
No connection
5
LO_2
Local oscillator 2 input
15
NC
No connection
6
GND
Ground
16
GND
Ground
7
GND
Ground
17
NC
No connection
8
RF+
Positive RF input
18
NC
No connection
9
RF–
Negative RF input
19
GND
Ground
10
GND
Ground
20
VDD
Supply voltage
Table 2. SKY42068-355LF Absolute Maximum Ratings
Parameter
Maximum
Units
VDD
5.5
V
Power dissipation
PD
1.7
W
Input power
PIN
22
dBm
Thermal resistance
RTH
Positive DC power supply
Symbol
Minimum
Typical
C/W
25
Operating temperature
TA
–40
+85
C
Storage temperature
TSTG
–40
+125
C
Note:
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.
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.
Functional Description
Electrical and Mechanical Specifications
The SKY42068-355LF consists of a high dynamic active mixer, LO
amplifiers, and a selectable LO input. The SKY42068-355LF was
specifically designed to meet the needs of high performance
receivers.
Signal pin assignments and functional pin descriptions are
described in Table 1. The absolute maximum ratings of the
SKY42068-355LF are provided in Table 2. The recommended
operating conditions are specified in Table 3 and electrical
specifications are provided in Table 4.
The mixer shares two independent LO signals, LO_1 and LO_2,
that are selected using a common CMOS-compatible control
signal. With this ability, the device can be used in applications
where frequency hopping is required.
Typical performance characteristics of the SKY42068-355LF are
illustrated in Figures 3 through 10.
The LO select logic is as follows:
LO_SEL Logic:
State:
High
LO1 enabled (pin 1)
Low
LO2 enabled (pin 5)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
2
June 22, 2010 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 103210E
DATA SHEET • SKY42068-355LF ACTIVE MIXER
Table 3. SKY42068-355LF Recommended Operating Conditions
Parameter
Symbol
Minimum
Typical
Maximum
Units
4.75
5.0
5.25
V
+85
C
Positive DC supply voltage
VDD
Power dissipation
PD
Operating case temperature
TOPR
–40
LO_SEL input voltage
LO_SELH
2.2
1.1
W
V
0.8
LO_SELL
V
Table 4. SKY42068-355LF Electrical Specifications
(Voltage Supply = +5 V, TA = +25 C, LO = 0 dBm, RF Frequency = 900 MHz, IF Frequency = 71 MHz, LO Frequency = 829 MHz, Unless
Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Typical
Max
Units
1000
MHz
1.5:1
2.0:1
RF
RF input frequency
400
RF input VSWR (Note 1)
Mixer (Note 2)
Conversion gain
3.0
Gain variation over temperature
–40 to +85 °C
Single side band noise figure
rd
3 Order Input Intercept Point
IIP3
1 MHz tone spacing
3rd Order Input Intercept Point variation over
temperature
IIP3
–40 to +85 °C
+30.0
3.8
dB
±0.8
dB
10
dB
+34.5
dBm
±0.8
dB
RF to IF isolation (Note 3)
+57
+65
dBm
LO to IF leakage
–25
–31
dBm
+17.0
+18.6
dBm
–70.0
dBc
LO to RF leakage
–26
1 dB Input Compression Point
IP1dB
2x2 product suppression (Note 4)
–20
dBm
Local Oscillator
LO input frequency (Note 5)
LO input VSWR (Note 1)
450
VSWR
1200
1.5:1
2.0:1
+5
LO level input
–5
0
LO1 to LO2 isolation
40
50
MHz
dBm
dB
Intermediate Frequency
IF output frequency
IF output VSWR (Note 1)
50
IF = 50 MHz to 200 MHz
250
1.5:1
MHz
2.0:1
Note 1: In a 50  system obtained with external matching components on input/output ports.
Note 2: Include RF balun and IF transformer losses.
Note 3: Measured with an RF input power of –10 dBm.
Note 4: Measured with an RF input power of –16 dBm.
Note 5: Use high side LO injection for RF frequencies below 500 MHz.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
103210E • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • June 22, 2010
3
DATA SHEET • SKY42068-355LF ACTIVE MIXER
Typical Performance Characteristics
(Voltage Supply = +5 V, TA = +25 C, LO = 0 dBm, RF Frequency = 900 MHz, IF Frequency = 71 MHz, LO Frequency = 829 MHz, Unless
Otherwise Noted)
10
10
4.75 V
5.00 V
5.25 V
9
–40 °C
+25 °C
+85 °C
9
8
7
Gain (dB)
Gain (dB)
8
7
6
5
4
3
2
6
5
4
3
2
1
0
860
1
870
880
890
900
910
920
0
860
930
870
880
Frequency (MHz)
Figure 3. Conversion Gain Over Frequency and Supply Voltage
910
930
–40 °C
+25 °C
+85 °C
18
Noise Figure (dB)
16
14
12
10
8
6
4
16
14
12
10
8
6
4
2
2
0
860
870
880
890
900
910
920
0
860
930
Frequency (MHz)
880
890
900
910
920
930
Figure 6. Noise Figure Over Frequency and Temperature
+40
+40
4.75 V
5.00 V
5.25 V
+39
+38
+37
–40 °C
+25 °C
+85 °C
+39
+38
+37
IIP3 (dBm)
+36
+35
+34
+33
+32
+36
+35
+34
+33
+32
+31
+30
870
Frequency (MHz)
Figure 5. Noise Figure Over Frequency and Supply Voltage
+31
860
870
880
890
900
910
920
930
Frequency (MHz)
Figure 7. Input IP3 Over Frequency and Supply Voltage
+30
860
870
880
890
900
910
920
Frequency (MHz)
Figure 8. Input IP3 Over Frequency and Temperature
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
4
920
20
4.75 V
5.00 V
5.25 V
18
Noise Figure (dB)
900
Figure 4. Conversion Gain Over Frequency and Temperature
20
IIP3 (dBm)
890
Frequency (MHz)
June 22, 2010 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 103210E
930
DATA SHEET • SKY42068-355LF ACTIVE MIXER
+25
+25
4.75 V
5.00 V
5.25 V
+23
+22
+21
+20
+19
+18
+17
+23
+22
+21
+20
+19
+18
+17
+16
+16
+15
–40 °C
+25 °C
+85 °C
+24
IP1dB (dBm)
IP1dB (dBm)
+24
+15
860
870
880
890
900
910
920
930
860
870
880
Figure 9. Input P1dB Over Frequency and Supply Voltage
Evaluation Board Description
The SKY42068-355LF Evaluation Board is used to test the
SKY42068-355LF mixer performance. The SKY42068-355LF
Evaluation Board schematic diagram is shown in Figure 11.
Figure 12 provides the Evaluation Board layout. The Bill of
Materials (BOM) is provided in Table 5.
890
900
910
920
930
Frequency (MHz)
Frequency (MHz)
Figure 10. Input P1dB Over Frequency and Temperature
enable the current limiting function of the power supply to
250 mA.
2. Connect a signal generator to the LO1 input port (J3). Set the
generator to the desired LO frequency at a power level of
0 dBm, but do not enable.
Circuit Design Configurations
3. Connect a signal generator to the mixer RF input port (J7). Set
the generator to the desired RF frequency at a power level of
0 dBm, but do not enable.
The following design considerations are general in nature and
must be followed regardless of final use or configuration:
4. Connect a spectrum analyzer to the IF output port of the mixer
(J6).
1. Paths to ground should be made as short as possible.
5. Enable the power supply.
2. The ground pad of the SKY42068-355LF mixer has special
electrical and thermal grounding requirements. This pad is the
main thermal conduit for heat dissipation. Since the circuit
board acts as the heat sink, it must shunt as much heat as
possible from the mixer. As such, design the connection to the
ground pad to dissipate the maximum wattage produced to the
circuit board. Multiple vias to the grounding layer are required.
6. Enable the LO signal.
3. Two external output bypass capacitors are required on the VDD
pin. The values of these capacitors will change with respect to
the desired RF frequency. One capacitor should be used for
low frequency bypassing and the other capacitor for high
frequency bypassing. Special attention should be given so that
the smaller value capacitor does not go into self-resonance at
the desired RF frequency.
4. The RF input must be driven differentially. A 1:1 impedance
ratio balun is recommended with a center tap on the secondary
side that is a DC path to ground.
Mixer Testing Procedure
Use the following procedure to set up the SKY42068-355LF
Evaluation Board for mixer testing. Refer to Figure 13 for
guidance:
1. Connect the SKY42068-355LF Evaluation Board (J1) to a +5
VDC power supply using insulated supply cables. If available,
7. Enable the RF signal and take measurements.
8. If LO2 is desired, connect the LO signal generator to the LO2
input port (J8) and pull the LO_SEL jumper (J2).
Package Dimensions
Figure 14 shows the package dimensions for the 20-pin QFN, and
Figure 15 provides the tape and reel dimensions.
Package and Handling Information
Since the device package is sensitive to moisture absorption, it is
baked and vacuum packed before shipping. 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 SKY42068-355LF is rated to Moisture Sensitivity Level 3
(MSL3) 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 • [email protected] • www.skyworksinc.com
103210E • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • June 22, 2010
5
PRELIMINARY DATA SHEET • SKY42068-355LF
VDD
X
2
J2
3
VDD
C9
12 pF
J8
LO_2 In
4
C4
33 pF
L2
0Ω
SMA
NC
NC
GND
NC
U1
SKY42068
LO_SEL
NC
GND
IF+
LO_2
IF–
C10
DNI
GND
C3
DNI
5
LO_1
6
7
8
9
15
14
13
J1
2-Pin Header
X
X
VDD
X
12
11
3
GND
C11
DNI
16
RF–
C1
DNI
RF+
SMA
1
17
VDD
1
2
X
18
NC
C2
33 pF
L1
0Ω
VDD
J3
LO_1 In
19
GND
20
GND
C6
1000 pF
GND
C5
33 pF
10
TB2
Balun
TC4-1W
LB2
27 nH
LB4
0Ω
6
CB8
DNI
2
J6
IF Out
SMA
CB6
10 pF
4
6
J7
RF In
LB1
12 nH
LB3
0Ω
SMA
CB1
DNI
CB7
DNI
1
2
TB1
Balun
LDB31900M05C-417
3
CB4
1000 pF
CB5
33 pF
1
RB1
5Ω
4
CB2
33 pF
CB3
1000 pF
S737
Figure 11. SKY42068-355LF Evaluation Board Schematic (900 MHz)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
6
103210E • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • June 22, 2010
DATA SHEET • SKY42068-355LF ACTIVE MIXER
J4
CA1
J3
C1
L1
C11
LA1
CA7
LA2
LA3
TA1 CA4
RA1
CA2
CA3
C5
C6
LA4
CA6
J5
CA8
TA2
C2
CA5
C9
J2
C10
L2
C3
J8
J1
TB2
U1
CB5
C4
TB1
CB3
CB2
RB1
LB1
CB8
CB4
CB6
LB2
LB3
CB7
LB4
J6
CB1
J7
Component Placement
Top Layer
Layer 3
Layer 2
Bottom Layer
S739
Figure 12. SKY42068-355LF Evaluation Board Assembly Diagram (900 MHz)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
103210E • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • June 22, 2010
7
DATA SHEET • SKY42068-355LF ACTIVE MIXER
Table 5. SKY42068-355LF Evaluation Board Component Values (900 MHz)
Reference Designator
Quantity
Value
C1, C3, C10, C11, CA1,
CA2, CA3, CA4, CA5, CA6,
CA7, CA8, CB1, CB7, CB8,
J4, J5, LA1, LA2, LA3,
LA4, RA1, TA1, TA2
24
DNI
C2, C4, C5, CB2, CB5
5
33 pF
C6, CB3, CB4
3
1000 pF
Manufacturer
C9
1
12 pF
CB6
1
10 pF
J1
1
Two-pin header connector
J2
1
Jumper
J3, J6, J7, J8
4
SMA connector
L1, L2, LB3, LB4
4
0
LB1
1
12 nH
LB2
1
27 nH
Part Number
RB1
1
5
TB1
1
1:1 (800-1000 MHz)
Murata
LDB31900M05C-417
TB2
1
4:1 (3-800 MHz)
Mini-Circuits
TC4-1W
U1
1
–
Skyworks
SKY42068-355LF-11
Power
Supply
Signal
Generator
LO1
LO2
50 Ω
VDD GND
IF
Spectrum
Analyzer
SKY42068
Evaluation Board
RF
Signal
Generator
S738
Figure 13. SKY42068-355LF Evaluation Board Mixer Testing Configuration
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
8
June 22, 2010 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 103210E
DATA SHEET • SKY42068-355LF ACTIVE MIXER
A
5.00
Index Area
(2.50 x 2.50)
C
0.20 Ref
3.15 +0.10/–0.15
Seating Plane
0.02 +0.03/–0.02
2.50
1.575 +0.050/–0.075
B
Detail A
(4 places)
20 x 0.55 +0.10/–0.10
0.65
5.00
B
3.15 +0.10/–0.15
2.50
Index Area
(2.50 x 2.50)
1.575 +0.050/–0.075
0.90 ± 0.10
0.15 C 2x
2x
A
20 x 0.30 ± 0.05
0.10 M A B C
0.05 M C
0.08 C 20x
0.10 C
3
Top View
Side View
Bottom View
1.30
0.65
Detail A
All dimensions are in millimeters
S745
Figure 14. SKY42068-355LF 20-Pin QFN Package Dimensions
4.00
φ1.50 +0.1/–0.0
8.00
0.30 ± 0.05
2.00 ± 0.05
φ1.50 Min
A
1.75 ± 0.10
R0.30 Max
5.50 ± 0.05
12.0 ± 0.30
5.25
1.10
A
5.25
0.25
Section A-A
R0.25
Notes:
1. Carrier tape: black conductive polycarbonate
or polystyrene.
2. Cover tape material: transparent conductive PSA.
3. All dimensions are in millimeters.
S379
Figure 15. SKY42068-355LF 20-Pin QFN Tape and Reel Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
103210E • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • June 22, 2010
9
DATA SHEET • SKY42068-355LF ACTIVE MIXER
Ordering Information
Model Name
SKY42068-355LF Active Mixer
Manufacturing Part Number
SKY42068-355LF-355LF
Evaluation Kit Part Number
TW12-D761
Copyright © 2006, 2008, 2010 Skyworks Solutions, Inc. All Rights Reserved.
Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by
Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the
information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to
update the materials or information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes.
No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or
information provided hereunder, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and Conditions
of Sale.
THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A
PARTICULAR PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY
DISCLAIMED. SKYWORKS DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS
SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION,
LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury,
death, physical or environmental damage. Skyworks customers using or selling Skyworks products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any
damages resulting from such improper use or sale.
Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of
products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for
applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters.
Skyworks, the Skyworks symbol, and “Breakthrough Simplicity” are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands
and names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com,
are incorporated by reference.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
10
June 22, 2010 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 103210E