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PRELIMINARY DATA SHEET
SKY65080-70LF: 1500-2500 MHz Low Noise Power Amplifier Driver
Applications
UHF television TETRA radios PCS, DCS, 2.5G, 3G handsets ISM band transmitters WCS fixed wireless 802.16 WiMAX 3GPP LTE
1 RF_IN 2 GND 3 RF_OUT
S244
GND 4
Features
Wideband frequency range: 1500 to 2500 MHz Low Noise Figure: 2.3 dB High linearity: IIP3 = +25.5 dBm Output P1dB = +21 dBm High gain: 15 dB Single DC supply: +5 V On-chip bias circuit SOT-89 (4-pin, 2.4 x 4.5 mm) package (MSL1, 260 C per JEDEC J-STD-020) Skyworks offers lead (Pb)-free RoHS (Restriction of Hazardous Substances) compliant packaging.
Figure 1. SKY65080-70LF Pinout - 4-Pin SOT Package (Top View)
Description
Skyworks SKY65080-70LF is a high performance, ultra-wideband Power Amplifier (PA) driver with superior output power, low noise, linearity, and efficiency. The device provides a 2.3 dB Noise Figure (NF) and an output power at 1 dB compression of +21 dBm, making the SKY65080-70LF ideal for use in the driver stage of infrastructure transmit chains. The SKY65080-70LF uses low-cost Surface-Mount Technology (SMT) in the form of a 4-pin, 2.4 x 4.5 mm Small Outline Transistor (SOT) package. The device package and pinout are shown in Figure 1 and a functional block diagram is provided in Figure 2.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY65080-70LF PA DRIVER
Active Bias
1
2
3
RF_IN
GND
RF_OUT
S669
Figure 2. SKY65080-70LF Functional Block Diagram Table 1. SKY65080-70LF Signal Descriptions
Pin # 1 2 3 4 RF_IN GND RF_OUT GND Name RF input Ground RF output Ground Description
Technical Description
The SKY65080-70LF is a single stage, low-noise PA that operates with a single 5 V power supply connected through an RF choke (inductor L1) to the output signal (pin 3). The bias current is set by the on-chip active bias composed of current mirror and reference voltage transistors, which allow excellent gain tracking over temperature and voltage variations. The device is externally RF matched using surface mount components to facilitate operation over a frequency range of 1500 to 2500 MHz.
Electrical and Mechanical Specifications
Signal pin assignments and functional pin descriptions are described in Table 1. The absolute maximum ratings of the SKY65080-70LF are provided in Table 2. The recommended operating conditions are specified in Table 3 and electrical specifications are provided in Table 4. Typical performance characteristics of the SKY65080-70LF are illustrated in Figures 3 through 9.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY65080-70LF PA DRIVER
Table 2. SKY65080-70LF Absolute Maximum Ratings
Parameter Supply voltage RF output power Supply current Power dissipation Operating case temperature Storage temperature Junction temperature
Note:
Symbol VCC POUT ICC PD TC TST TJ
Min
Max 6 +24 100 0.6
Units V dBm mA W C C C
-40 -55
+85 +125 +150
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 values. 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. SKY65080-70LF Recommended Operating Conditions
Parameter Supply voltage Operating frequency Operating case temperature VCC f TJ Symbol Min 4.75 1500 -40 Typical 5.0 1750 +25 Max 5.5 2500 +85 Units V MHz C
Table 4. SKY65080-70LF Electrical Characteristics (Note 1) (VCC = +5 V, TC = 25 C, f = 1850 MHz, Unless Otherwise Noted)
Parameter Frequency Small signal gain Input return loss Output return loss Reverse transmission loss Output power @ 1 dB compression Operating current @ OP1dB Power Added Efficiency Third order input intercept point Third order output intercept point Noise Figure Quiescent current f G |S11| |S22| |S12| OP1dB ICC_OP1DB PAE IIP3 OIP3 NF ICCQ @ OP1dB PIN/tone = -10 dBm, f = 1 MHz PIN/tone = -10 dBm, f = 1 MHz Small signal No RF +24.0 +39.0 PIN = -15 dBm PIN = -15 dBm PIN = -15 dBm PIN = -15 dBm CW Symbol Test Conditions Min 1700 14 Typical 1850 15 9 8 23 +21 75 32 +25.5 +40.5 2.3 66 3.0 Max 2000 Units MHz dB dB dB dB dBm mA % dBm dBm dB mA
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
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PRELIMINARY DATA SHEET * SKY65080-70LF PA DRIVER
+28.0 +27.5 +27.0
IIP3 (dBm)
+26.5 +26.0 +25.5 +25.0 +24.5 +24.0 1700
4.8 V 5.0 V 5.2 V
1750 1800 1850 1900 1950 2000
Frequency (MHz)
Figure 3. Typical IIP3 vs Frequency Over VCC (Input = -10 dBm CW)
+28 +27 +26 +25
IIP3 (dBm)
+24 +23 +22 +21 +20 +19 -12
4.8 V 5.0 V 5.2 V
-10 -8 -6 -4
Input Power (dBm)
Figure 4. Typical IIP3 vs Input Power Over VCC @ 1700 MHz
16.5 16.0
4.8 V 5.0 V 5.2 V
Gain (dB)
15.5 15.0 14.5 14.0 1700
1750
1800
1850
1900
1950
2000
Frequency (MHz)
Figure 5. Gain vs Frequency Over VCC
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PRELIMINARY DATA SHEET * SKY65080-70LF PA DRIVER
2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1600
Noise Figure (dB)
4.8 V 5.0 V 5.2 V
1700 1800 1900 2000 2100
Frequency (MHz)
Figure 6. Noise Figure vs Frequency Over VCC
16.5 16.0 15.5 15.0 14.5 14.0 13.5 13.0 12.5 12.0 -5
Gain (dB)
4.8 V 5.0 V 5.2 V
0 +5 +10 +15 +20 +25
Output Power (dBm)
Figure 7. Typical Gain vs Output power Over VCC (CW @ 1800 MHz)
18 17 16
Gain (dB)
15 14 13 12 11 10 -10
1700 MHz 1800 MHz 1900 MHz 2000 MHz
0 +10 +20 +30
Output Power (dBm)
Figure 8. Gain vs Output Power Over Frequency
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PRELIMINARY DATA SHEET * SKY65080-70LF PA DRIVER
0.12 0.11 0.10
1700 MHz 1850 MHz 1950 MHz
Operating Current (A)
0.09 0.08 0.07 0.06 0.05 0.04 -10
-5
0
+5
+10
+15
+20
+25
Output Power (dBm)
Figure 9. Operating Current vs Output Power Over Frequency
Evaluation Board Description
The Skyworks SKY65080-70LF Evaluation Board is used to test the performance of the SKY65080-70LF PA driver. An assembly drawing for the Evaluation Board is shown in Figure 10 and the layer detail is provided in Figure 11. Capacitors C7, C8, and C9 provide DC bias decoupling for VCC. Pins 1 and 3 are the RF input and output signals, respectively. External DC blocking is required on the input and output, but can be implemented as part of the RF matching circuit. Pin 2 and the package backside metal, pin 4, are ground pins that provide the DC and RF ground, respectively. Circuit Design Configurations The following design considerations are general in nature and must be followed regardless of final use or configuration. 1. Paths to ground should be made as short as possible. 2. The ground pad of the SKY65080-70LF power amplifier 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 amplifier. 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. NOTE: Junction temperature (Tj) of the device increases with a poor connection to the slug and ground. This reduces the lifetime of the device. A suggested matching circuit is shown in Figure 12 with component values for the SKY65080-70LF-11 package option
listed in Table 5. Component values for the SKY65080-70LF-21 package option are shown in Table 6. Testing Procedure Use the following procedure to set up the SKY65080-70LF Evaluation Board for testing: 1. Connect a 5.0 V supply to VCC. If available, enable the current limiting function of the power supply to 100 mA. 2. Connect a signal generator to the RF signal input port. Set it to the desired RF frequency at a power level of -15 dBm or less to the Evaluation Board but do NOT enable the RF signal. 3. Connect a spectrum analyzer to the RF signal output port. 4. Enable the power supply. 5. Enable the RF signal. 6. Take measurements. CAUTION: If any of the output signals exceed the rated maximum values, the SKY65080-70LF Evaluation Board can be permanently damaged.
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 SKY65080-70LF is rated to Moisture Sensitivity Level 1 (MSL1) at 260 C. It can be used for lead or lead-free soldering.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY65080-70LF PA DRIVER
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, document number 101568.
Package Dimensions
Package dimensions for the 4-pin SOT-89 are shown in Figure 13, and tape and reel dimensions are provided in Figure 14.
JP1
GND GND GND
C8 C7 C6 L2 L3
R1
VCC
J1 (RF In)
C5 L4
C1
C2
L1
C3
C4
J2 (RF Out)
S708
Figure 10. Evaluation Board Assembly Drawing
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY65080-70LF PA DRIVER
Layer 1: Top - Metal
Layer 2: Ground
Layer 3: Ground
Layer 4: Solid Ground Plane
S1699
Figure 11. Evaluation Board Layer Detail
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY65080-70LF PA DRIVER
VCC = 5 V
C1 C2 C3 R1
L1
4
Input
M2
M3
1
3
M6
M7
Output
M1
M4
2
M5
M8
S1377
Figure 12. SKY65080-70LF Evaluation Board Schematic (1700 MHz to 2000 MHz, IIP3 Matched)
Table 5. SKY65080-70LF (SOT-89 Package) Evaluation Board Bill of Materials
Component C1 C2 C3 L1 M1 M2 M3 M4 M5 M6 M7 M8 R1 Size 0805 0603 0603 0603 0603 0603 0603 0603 0603 0603 0603 0603 0603 Value 10 F 2.7 pF DNI 4.7 nH DNI 3.6 pF 2.2 nH 1.8 pF DNI 1.5 nH 33 pF DNI 0 *** TBD *** *** TBD *** Vendor Part Number
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY65080-70LF PA DRIVER
0.381 0.025 R0.10 Sharp
4.50 0.10 R0.25 1.70 0.05
7o
1.50 0.51 0.10
4.09 0.10
7o
R0.10 0.46 1.50 0.10 0.41 1.04 0.15
Side View
All measurements are in millimeters
End View
2.44 0.10
Bottom View
S253
Figure 13. SKY65080-70LF (4-Pin SOT-89) Package Dimensions
2.00 0.05 8.00 0.10 4.00 0.10 1.50 0.10
0.30 0.05
1.75 0.10
7o Max
Pin #1 Indicator
B A A
5.50 0.05 12.0 0.30
4.90 0.10
B
1.90 0.10 4.60 0.10
1.00 Min.
B
Notes: 1. Carrier tape material: black conductive polycarbonate 2. Cover tape material: transparent conductive PSA 3. Cover tape size: 9.2 mm width 4. All measurements are in millimeters
8o Max
S264
Figure 14. SKY65080-70LF Tape and Reel Dimensions
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY65080-70LF PA DRIVER
Ordering Information
Model Name SKY65080-70LF Low Noise PA Driver Ordering Part Number SKY65080-70LF (Pb-free package) TW18-D210 Evaluation Kit Part Number
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.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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