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DATA SHEET
SKY65342-11: 450-470 MHz Front-End Module
Applications
Tetra radio Remote metering GSM450 WLL
Transmit Port
SPDT Switch
PA
Harmonic Filter
Antenna Port
Features
Transmit output power > +29 dBm High gain in transmit path = 32 dB High transmit/receive isolation > 30 dB Internal RF match and bias circuits Single DC supply : +3.6 V Small, MCM (12-pin, 8 x 8 mm) package (MSL3, 260 C per JEDEC J-STD-020) Skyworks offers lead (Pb)-free RoHS (Restriction of Hazardous Substances) compliant packaging.
Receive Port
S1346
Figure 1. SKY65342-11 Block Diagram
Description
The SKY65342-11 is a highly efficient Front-End Module (FEM) that incorporates a transmit/receive (T/R) path and an antenna T/R switch. The transmit path consists of a high efficiency power amplifier (PA) followed by a harmonic filter to reject harmonic frequencies. The PA is implemented using Skyworks highly reliable Heterojunction Bipolar Transistor (HBT) process and is Class AB biased to provide maximum efficiency with a low spurious output. A high linearity and high isolation single-pole, double-throw (SPDT) switch is used at the common antenna interface between the transmit and receive paths. The receive path is a low insertion loss "through" path with input and output ports internally matched to 50 . The SKY65342-11 FEM uses Surface Mount Technology (SMT) in the form of a Multi-Chip Module (MCM), which allows for a highly manufacturable, low-cost solution. The device is provided as a compact, 12-pin 8 x 8 mm 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.
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DATA SHEET * SKY65342-11 FRONT-END MODULE
PA_EN
11
VCC1
12
10
TX_RFIN GND RX_IN
VCC2
1
9
V1 V2 ANT
2
8
3
7
4
5
6
VC_BIAS
VREF1
VREF2
S1641
Figure 2. SKY65342-11 Pinout - 12-Pin MCM (Top View)
Technical Description
The SKY65342-11 provides input and output amplifier stages, and is internally matched for optimum efficiency. An active bias circuit provides the input and output stages with excellent gain tracking over temperature and voltage variations. The module operates with positive DC voltages, and maintains high efficiency and good linearity. The nominal operating voltage is 3.6 V for maximum power, but the device can be operated at slightly lower voltages for other mobile applications. The input and output stages are independently supplied using the VCC1 and VCC2 supply lines (pins 12 and 10, respectively). The bias reference voltages for stages 1 and 2 are supplied using common lines VREF1 and VREF2 (pins 5 and 6, respectively). The DC control voltage that sets the bias for stages 1 and 2 is supplied by the VC_BIAS signal, pin 4.
Typical performance characteristics of the SKY65342-11 are illustrated in Figures 3 through 7. The state of the SKY65342-11 is determined by the logic provided in Table 5.
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 SKY65342-11 is rated to Moisture Sensitivity Level 3 (MSL3) at 260 C. It can be used for lead or lead-free soldering. For additional information, refer to Skyworks Application Note, PCB Design and SMT Assembly/Rework Guidelines for MCM-L Packages, document number 101752. 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. For packaging details, refer to the Skyworks Application Note, Tape and Reel Information - RF Modules, document number 101568.
Electrical and Mechanical Specifications
Signal pin assignments and functional pin descriptions are described in Table 1. The absolute maximum ratings of the SKY65342-11 are provided in Table 2. The recommended operating conditions are specified in Table 3 and electrical specifications are provided in Table 4.
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DATA SHEET * SKY65342-11 FRONT-END MODULE
Table 1. SKY65342-11 Signal Descriptions
Pin # 1 2 3 4 5 6 Name TX_RFIN GND RX_IN VC_BIAS VREF1 VREF2 Description Transmit RF input Ground Receive RF input +3.6 V DC supply +3.6 V DC supply +3.6 V DC supply Pin # 7 8 9 10 11 12 ANT V2 V1 VCC2 PA_EN VCC1 Name Antenna Switch control Switch control +3.6 V DC supply PA enable (on = 2.5-3.6 V, off = 0-0.2 V) +3.6 V DC supply Description
Table 2. SKY65342-11 Absolute Maximum Ratings (Note 1)
Parameter Supply voltage (VCC1, VCC2, VREF1, VREF2, VC_BIAS) Input power Supply current Case operating temperature Storage temperature Junction temperature VCC PIN ICC TC TST TJ -40 -65 Symbol Minimum Maximum 4 +5 850 +85 +125 +150 Units V dBm mA 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.
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. SKY65342-11 Recommended Operating Conditions
Parameter Supply voltage (VCC1, VCC2, VREF1, VREF2, VC_BIAS) Case operating temperature Storage temperature VCC TC TST Symbol Minimum 3.0 -40 -55 Typical 3.6 Maximum 4.0 +85 +125 Units V C C
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DATA SHEET * SKY65342-11 FRONT-END MODULE
Table 4. SKY65342-11 Electrical Specifications (Note 1) (Frequency = 460 MHz, VCC1 = VCC2 = VREF1 = VREF2 = VC_BIAS = 3.6 V, TC = +25 C, Unless Otherwise Noted)
Parameter Operating frequency range Transmit path small signal gain Transmit saturated output power Transmit path Noise Figure Transmit path harmonics (2nd to 6th) Power Added Efficiency Receive path insertion loss Transmit/receive path isolation Input return loss Output return loss Quiescent current Operating current Leakage current Maximum VSWR for stable operation PAE RX_LOSS ISOL S11 S22 IQ IOP ILEAK VSWRMAX No RF POUT = +29 dBm No RF input, module in standby mode CW 6:1 CW 27 15 10 f G PSAT NF CW, PIN = 0 dBm CW, PIN = 0 dBm 53 31 CW, PIN = -30 dBm CW, PIN = 0 dBm Symbol Test Condition Min 450 30 +28.5 34.6 +29.1 5.5 60 34 0.6 33 17 15 85 650 2 8:1 110 720 1.0 6.5 Typical Max 470 Units MHz dB dBm dB dBc % dB dB dB dB mA mA A -
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.
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DATA SHEET * SKY65342-11 FRONT-END MODULE
36 34 32
Gain (dB)
30 28 26 24 22 0 +5
+25 oC +85 oC -40 oC
+10 +15 +20 +25 +30 +35
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POUT (dBm)
Figure 3. Gain vs Output Power Over Temperature @ 460 MHz (VCC = 3.6 V)
Transmit Path Small Signal Gain (dB)
35.5 35.3 35.1 34.9 34.7 34.5 34.3 34.1 33.9 33.7 33.5 450 460 470
S1644
+25 oC +85 oC -40 oC
Frequency (MHz)
Figure 4. Transmit Path Small Signal Gain vs Frequency Over Temperature (VCC = 3.6 V)
800 700
Operating Current (mA)
600 500 400 300 200 100 0 0 +5 +10 +15 +20 +25 +30 +35
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+25 oC +85 oC -40 oC
POUT (dBm)
Figure 5. Operating Current vs Output Power Over Temperature @ 460 MHz (VCC = 3.6 V)
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DATA SHEET * SKY65342-11 FRONT-END MODULE
90
Harmonic Suppression (dBc)
85 80 75 70 65 60 55 50 F2 F3 F4 F5 F6 F7 F8 F9 F10
S1646
Harmonic Order
Figure 6. Harmonics Level @ 460 MHz (VCC = 3.6 V)
-0.53
Receive Path insertion Loss (dB)
-0.54 -0.55 -0.56 -0.57 -0.58 -0.59 -0.60 -0.61 450 460 470
+25 oC +85 oC -40 oC
Frequency (MHz)
S1647
Figure 7. Receive Path Insertion Loss vs Frequency Over Temperature (VCC = 3.6 V)
Table 5. SKY65342-11 FEM Switch Control Logic
Mode Transmit Receive
Note: Logic level 0: 0 V to 0.5 V Logic level 1: 2.0 V to VCC
V1 Signal (Pin 9) 1 0
V2 Signal (Pin 8) 0 1
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DATA SHEET * SKY65342-11 FRONT-END MODULE
Evaluation Board Description
The SKY65342-11 Evaluation Board is used to test the performance of the SKY65342-11 FEM. The Evaluation Board schematic diagram is shown in Figure 8. An assembly drawing for the Evaluation Board is shown in Figure 9 and the layer detail is provided in Figure 10. The layer detail physical characteristics are noted in Figure 11. Table 6 provides the Bill of Materials (BOM) list for Evaluation Board components. Circuit Design Considerations The following design considerations are general in nature and must be followed regadless of final use or configuration: 1. Paths to ground should be made as short as possible. 2. The ground pad of the SKY65342-11 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 device. Therefore, design the connection to the ground pad to dissipate the maximum wattage produced by the circuit board. Multiple vias to the grounding layer are required. NOTE: A poor connection between the slug and ground increases junction temperature (TJ), which reduces the lifetime of the device.
Package Dimensions
The phone board layout footprint for the SKY65342-11 is shown in Figure 12. Package dimensions for the 12-pin MCM are shown in Figure 13, and tape and reel dimensions are provided in Figure 14.
DC Supply 1
12
11
10
PA_EN
VCC1
J2 SMA
VCC2
DC Supply 2
PA Enable
1
TX_RFIN
V1
9
Switch Logic
2
J3 SMA
GND
SKY65342-11
V2
8
Switch Logic
J4 SMA
3
VC_BIAS
RX_IN
ANT
VREF1 VREF2
7
4
5
6
Voltage Reference 1
Voltage Reference 2
Voltage Bias
S1642
Figure 8. SKY65342-11 Evaluation Board Schematic
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DATA SHEET * SKY65342-11 FRONT-END MODULE
S1520
Figure 9. SKY65342-11 Evaluation Board Assembly Drawing
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DATA SHEET * SKY65342-11 FRONT-END MODULE
Layer 1: Top - Metal
Layer 2: Ground
Layer 3: Power Plane
Layer 4: Solid Ground Plane
S1349
Figure 10. SKY65342-11 Evaluation Board Layer Detail
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DATA SHEET * SKY65342-11 FRONT-END MODULE
Cross Section
Name Thickness (mm) Material
Tmask L1 Dielectric L2 Dielectric L3 Dielectric L4 Bmask 0.010 0.035 0.300 0.035 0.100 0.035 0.300 0.035 0.010 Solder Resist Cu, 1 oz. Rogers 4003 Cu, 1 oz FR4 Cu, 1 oz FR4 Cu, 1 oz Solder resist
S1366
Figure 11. Layer Detail Physical Characteristics
Table 6. SKY65342-11 Evaluation Board Bill of Materials
Component J2, J3, J4 SC1, SC2, SC3, SC4 Backframe Quantity 3 4 1 Size Value Vendor Part Number 615R54-021 92196A052 1056-101
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DATA SHEET * SKY65342-11 FRONT-END MODULE
8.685
Stencil aperture 60-80% of module/pkg solder mask area
2X 1.65
12X 0.81
12X 1.043
2X 1.91
C L
8.685
C L
Component Outline
Stencil Aperture Top View
8.685 6X 0.81 Pin 12 1.65 Typ Pin 12 8.785
5.080 Solder
1.65 12X 1.143
Mask Opening
11X 1.043 Pin 1 Pin 1
12X 0.91
8.685 1.91 Typ
C L
C L
8.785
1.91 Typ
0.25
Thermal Via Array 0.3 mm on 1.0 mm pitch. Additional vias in common ground pad will improve thermal performance. NOTE: It is recommended that thermal vias should be filled with 30-35 m Cu plating.
C L
Component Outline
C L
Component Outline
Metallization Top View
Solder Mask Opening Top View
All measurements are in millimeters
S1357
Figure 12. SKY65342-11 Phone Board Layout Footprint
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DATA SHEET * SKY65342-11 FRONT-END MODULE
6x 4.093
8.385 Pin 1 Indicator
B C Top
(3.4) Pin 12
0.3 Solder Mask Opening 0.15 Metal Pad Pin 1 Indicator
(2.7) 8.385
0
Pin 1
4x 1.91
A
6x 4.093
4x 1.65
1.35 0.1
0.05 A B C
A
0.1
0 12x SMT Pad
0.15 A B C
5.08 Solder Mask Opening
0.15 A B C
Top View
0.793 0.1 (0.1)
Side View
Bottom View
Metal Pad Edge 0.81 0.05
Detail A
3x - This rotation 3x - Rotated 180o o 3x - Rotated 90o 3x - Rotated 90 Dimensioning and tolerancing according to ASME Y14.5M-1994. All measurements are in millimeters
S1354
Figure 13. SKY65342-11 12-Pin MCM Package Dimensions
12.00 0.10 1.50 0.10 Pin #1 4.00 0.10
B
2.00 0.10
1.75 0.10
8.88 0.10
5o Max
A
A
7.50 0.10
16.00 +0.30/-0.10
2.14 0.10
B
B
1.50 0.25
8o Max 8.89 0.10
A
Notes: 1. Carrier tape: black conductive poly carbonate or polystyrene. 2. Cover tape material: transparent conductive PSA. 3. Cover tape size: 13.3 mm width. 4. All measurements are in millimeters.
S1252
Figure 14. SKY65342-11 Tape and Reel Dimensions
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DATA SHEET * SKY65342-11 FRONT-END MODULE
Ordering Information
Model Name SKY65342-11 450-470 MHz Front-End Module Manufacturing Part Number SKY65342-11 (Pb-free package) Evaluation Kit Part Number TW17-D315-003
Copyright (c) 2009 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.
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