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PRELIMINARY DATA SHEET
SKY77181 Power Amplifier Module for WCDMA / HSDPA (880-915 MHz)
Applications
* WCDMA Handsets * HSDPA Handsets * Personal Communications Services (PCS) * Wireless local loop (WLL)
Description
The SKY77181 Power Amplifier module is a fully matched 8-pad surface mount module developed for Wideband Code Division Multiple Access (WCDMA) applications. This small and efficient power amplifier packs full coverage of the 880-915 MHz bandwidth into a single compact package. The SKY77181 meets the stringent spectral linearity requirements of High Speed Downlink Packet Access (HSDPA) data transmission with high power added efficiency for power output of up to 28 dBm. Because of high efficiencies attained throughout the entire power range, the SKY77181 delivers unsurpassed talk-time advantages. The single Gallium Arsenide (GaAs) Microwave Monolithic Integrated Circuit (MMIC) contains all active circuitry in the module. The MMIC includes on-board bias circuitry, as well as input and interstage matching circuits. The output match is realized off-chip within the module package to optimize efficiency and power performance into a 50 load. This device is manufactured with Skyworks' InGaP GaAs Heterojunction Bipolar Transistor (HBT) process that provides for all positive voltage DC supply operation while maintaining high efficiency and good linearity. Primary bias to the SKY77181 is supplied directly from a three-cell Ni-Cd, a single-cell Li-Ion, or other suitable battery with an output in the 3.1 to 4.6 volt range. No VREF voltage is required. Power down is accomplished by setting the voltage on VENABLE to zero volts. Digital bias control can be used to optimize efficiency at high and low power or analog bias control can be used to optimize efficiency over the entire power range. No external supply side switch is needed as typical "off" leakage is a few microamperes with full primary voltage supplied from the battery.
Features
* No VREF required * Low voltage positive bias - 3.1 V to 4.6 V * Supports low collector voltage operation * Good linearity * High efficiency at all power levels (13.5% at 15 dBm) * Large dynamic range * Low Profile package - 3 x 3 x 1.1 mm * 8-pad configuration * Power down control * InGaP * Digital VENABLE * Digital or Analog VCONTROL
Figure 1. SKY77181 Functional Block Diagram
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200643A * Skyworks Proprietary and Confidential Information. * Products and product Information are subject to change without notice. * January 7, 2008
1
PRELIMINARY DATA SHEET
SKY77181 POWER AMPLIFIER MODULE FOR WCDMA (880-915 MHz)
Electrical Target Specifications
The following tables list the electrical characteristics of the SKY77181 Power Amplifier. Table 1 lists the absolute maximum ratings, while Table 2 shows the recommended operating conditions to achieve the performance characteristics for WCDMA and HSDPA listed, respectively, in Table 4 and Table 6. Table 3 lists the recommended Supply and Control voltage conditions over Output Power. Standard test configurations for WCDMA and HSDPA are shown in Table 5 and Table 7, respectively,.
Table 1. Absolute Maximum Ratings 1
Parameter RF Input Power Supply Voltage Control Voltage Enable Voltage Case Temperature Ruggedness - no damage 2
2 PO_MAX, all phases, time = 10 sec, continuous modulated signal.
Symbol PIN VCC, VBIAS (no RF) VCONT VEN Operating Storage TCASE TSTG Ru
Minimum -- -- 0 -- -30 -55 --
Maximum 9 7 1.5 3 110 125 10:1
Unit dBm Volts Volts Volts C VSWR
1 No damage assuming only one parameter is set at limit at a time with all other parameters set at nominal value.
Table 2. Recommended Operating Conditions
Parameter RF Output Power Operating Frequency Supply Voltage 1 Bias Voltage Enable Voltage VCONTROL Range Load Mismatch (all angles) Case Operating Temperature
1 When VCC supply is 3.1 V, PO_MAX must be backed off 1 dB.
Symbol WCDMA HSDPA FO VBATT DC/DC VBIAS PA On PA Off VCONT VSWR TCASE VEN VCC PO_MAX
Minimum -- -- 880.0 3.1 0.5 3.4 1.3 0.0 0.6 -- -20
Nominal -- -- 897.5 3.4 3.4 3.6 -- -- -- 1 +25
Maximum 28.5 28.0 915.0 4.6 3.4 4.6 2.75 0.4 1.2 -- +85
Unit dBm MHz Volts Volts Volts Volts VSWR C
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SKY77181 POWER AMPLIFIER MODULE FOR WCDMA (880-915 MHz)
PRELIMINARY DATA SHEET
Table 3. Recommended Supply Voltage (VCC) and Control Voltage (VCONT) Conditions Over Output Power (PO)
PSET (dBm) WCDMA -20 -10 -5 0 5 10 15 20 23 25 26 27 28 28.5 HSDPA -21 -11 -6 -1 4 9 14 19 22 24 25 26 27 28 0.72 0.72 0.81 0.92 1.05 1.05 1.10 1.10 1.10 1.10 1.10 1.10 1.10 1.10 1.15 1.15 1.17 1.20 1.25 1.45 1.63 2.00 2.35 2.70 2.85 3.10 3.40 3.40 VCONT VCC
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200643A * Skyworks Proprietary and Confidential Information. * Products and product Information are subject to change without notice. * January 7, 2008
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PRELIMINARY DATA SHEET
SKY77181 POWER AMPLIFIER MODULE FOR WCDMA (880-915 MHz)
Table 4. SKY77181 Electrical Specifications for WCDMA -- Recommended Operating Conditions 1
Refer to Table 5. Standard Test Configuration -- WCDMA Voice Mode (Uplink Reference Measurement Channel: 12.2 kbps)
WCDMA (Wideband Code Division Multiple Access) 2 Characteristics Gain Conditions Gain Variation Over Frequency High Power Power Added Efficiency Low Power Error Vector Magnitude PAELOW EVM ACLR1_H 5 MHz Adjacent Channel Leakage power Ratio 3 10 MHz ACLR2_L Second Harmonic Suppression Third fL3 PN_WRX PN_WRX2 Noise Power PN_GPS PN_DCS PN_UMTS PN_BT1 Input Voltage Standing Wave Ratio (VSWR) Stability Total Current Quiescent Current Control Current Digital Enable Current Leakage Current
1 Refer to conditions in Table 2 and Table 3, unless otherwise specified. 2 Data in this Table were verified with the signal configuration shown in Table 5. 3 ACLR is specified per 3GPP as the ratio of total in-band power to adjacent power, both measured in 3.84 MHz bandwidth at specified offsets.
Symbol High Power Low Power GHIGH GLOW PO_MAX
Condition
Minimum 27.0 12.5 -- 36.0 12.5 -- -- -- -- -- --
Typical 30.0 16.0 -- -- --
Maximum 33.0 19.5 1 --
Unit dB dB
PO = -10 dBm Fixed VCC, Temp, PIN
PAEHIGH
PO_MAX TCASE = +25 C PO = 15 dBm TCASE = +25 C -- PO_MAX PO 9 dBm PO_MAX PO 9 dBm
% -- 5 -38.0 -45.0 -50.0 -56.0 -8 -46 -90 -69 -110 -111 -112 -107 1.5 -- 550 -- -- -- -- 50 -- -- 5 -35.5 -42.0 dBc -48.0 -53.0 0 -30 -88 -65 -100 -100 -100 -90 2.0 -46 578 75 500 5 10 -- dBm mA mA A A A dBm/30 kHz dBm/1 MHz %
ACLR1_L ACLR2_H
fH2 VCC = 3.4 V
-- Band VIII_RX: 925- 960 MHz, 45 MHz duplex WCDMARX = 925 MHz WCDMATX = 915 MHz A-GPS Band: 1570- 1580 MHz WCDMARX = 1805- 1880 MHz 2110-2170 MHZ 2400-2480 MHz -- VSWR = 6:1 all phases PO_MAX VCC = 1.5 V VCONT = 1.0 V, no RF -- VEN 1.0 V VREF = off VEN = off -- -- -- -- -- -- -- --
VSWR S ITOTAL ICQ ICONT IEN ILEAK
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SKY77181 POWER AMPLIFIER MODULE FOR WCDMA (880-915 MHz)
PRELIMINARY DATA SHEET
Table 5. Standard Test Configuration -- WCDMA Voice Mode (Uplink Reference Measurement Channel: 12.2 kbps)
Parameter Information Bit Rate DPCCH DPDCH TFCI Level 12.2 kbps 15.0 kbps 60.0 kbps ON Spread Code -- 0 16 -- Spread Factor -- 256 64 -- I/Q -- Q I -- c -- 8/15 -- -- d -- -- 15/15 -- hs -- -- -- -- -6.57 dB -1.087 dB -- Relative Power
Table 6. SKY77181 Electrical Specifications for HSPDA -- Recommended Operating Conditions 1
Refer to Table 7: Standard Test Configuration -- HSDPA Mode
HSDPA (High Speed Downlink Packet Access) 2 Characteristics Gain Conditions Gain Variation Over Frequency High Power Power Added Efficiency Low Power Error Vector Magnitude PAELOW EVM ACLR1_H 5 MHz offset ACLR1_L Adjacent Channel Leakage power Ratio 3 ACLR2_H 10 MHz offset ACLR2_L
1 Refer to condition in Table 2 and Table 3, unless otherwise specified. 2 Data in this Table were verified with the signal configuration shown in Table 7. 3 ACLR is specified per 3GPP as the ratio of in-band power to adjacent power, both measured in 3.84 MHz bandwidth at specified offsets.
Symbol High Power Low Power GHIGH GLOW PO_MAX
Condition
Minimum 27.0 12.5 -- 34.0 11.0 -- -- -- -- --
Typical 30.0 16.0 -- 36.0 12.0 -- -38.0 -45.0 -52.0 -60.0
Maximum 33.0 19.5 1 --
Unit dB dB
PO = -10 dBm Fixed VCC, Temp.
PAEHIGH
PO_MAX TCASE = +25 C PO = 14 dBm TCASE = +25 C -- PO_MAX VCONT = 15 V PO = 9 dBm PO_MAX VCONT = 15 V PO = 9 dBm
% -- 5 -35.5 -42.0 dBc -48.0 -53.0 %
Table 7. Standard Test Configuration -- HSDPA Mode
Parameter DPCCH DPDCH HS- DPDCH TFCI Level 15 kbps 60 kbps 15 kbps On Spread Code 0 16 64 -- Spread Factor 256 64 256 -- I/Q Q I Q -- c 12/15 -- -- -- -- d -- 15/15 hs -- -- 24/15 -- Relative Power -8.17 dB -6.23 dB -2.15 dB --
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200643A * Skyworks Proprietary and Confidential Information. * Products and product Information are subject to change without notice. * January 7, 2008
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PRELIMINARY DATA SHEET
SKY77181 POWER AMPLIFIER MODULE FOR WCDMA (880-915 MHz)
Evaluation Board Description
The evaluation board is a platform for testing and interfacing design circuitry. To accommodate the interface testing of the SKY77181, the evaluation board schematic and diagrams are included for preliminary analysis and design. Figure 2 shows the basic schematic of the board for the 880 MHz to 915 MHz range.
Figure 2. SKY77181 Evaluation Board Schematic
Figure 3. SKY77181 Evaluation Board Assembly Diagram
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SKY77181 POWER AMPLIFIER MODULE FOR WCDMA (880-915 MHz)
PRELIMINARY DATA SHEET
Package Dimensions and Pad Descriptions
The SKY77181 is a multi-layer laminate base, overmold encapsulated modular package designed for surface mount solder attachment to a printed circuit board. Figure 4 is a mechanical drawing of the pad layout for this package. Figure 5 provides a recommended phone board layout footprint for the PAM to help the designer attain optimum thermal conductivity, good grounding, and minimum RF discontinuity for the 50-ohm terminals. Figure 6 shows the pad names and the pad numbering convention, which starts with pad 1 at the upper left, and increments counterclockwise around the package. Figure 7 illustrates typical case markings.
Figure 4. Dimensional Drawing for 3 x 3 x 1.1.1 mm, 8-pad Package - SKY77181 (All Views)
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET
SKY77181 POWER AMPLIFIER MODULE FOR WCDMA (880-915 MHz)
Figure 5. Phone PCB Layout Footprint for 3 x 3 x 1.1 mm, 8-pad Package - SKY77181
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SKY77181 POWER AMPLIFIER MODULE FOR WCDMA (880-915 MHz)PRELIMINARY DATA SHEET
than 10 seconds. For details on attachment techniques, precautions, and handling procedures recommended by Skyworks, please refer to Skyworks Application Note: PCB Design and SMT Assembly/Rework, Document Number 101752. Additional information on standard SMT reflow profiles can also be found in the JEDEC Standard J-STD-020. Production quantities of this product are shipped in the standard tape-and-reel format. For packaging details, refer to Skyworks Application Note: Tape and Reel Information - RF Modules, Document Number 101568.
Electrostatic Discharge Sensitivity
Figure 6. SKY77181 Pad Configuration
The SKY77181 is a Class 1 device. Figure 8 lists the Electrostatic Discharge (ESD) immunity level for each non-ground pad of the SKY77181 product. The numbers in Figure 8 specify the ESD threshold level for each pad where the I-V curve between the pad and ground starts to show degradation. ESD testing was performed in compliance with MIL-STD-883E Method 3015.7 using the Human Body Model. If ESD damage threshold magnitude is found to consistently exceed 2000 volts on a given pad, this so is indicated. If ESD damage threshold below 2000 volts is measured for either polarity, numbers are indicated that represent worst case values observed in product characterization.
Figure 7. Typical Case Markings - 3 mm x 3 mm Package
Package and Handling Information
Because of its sensitivity to moisture absorption, this device package is baked and vacuum-packed prior to shipment. Instructions on the shipping container label must be followed regarding exposure to moisture after the container seal is broken, otherwise, problems related to moisture absorption may occur when the part is subjected to high temperature during solder assembly. The SKY77181 is capable of withstanding an MSL3/260 C solder reflow. Care must be taken when attaching this product, whether it is done manually or in a production solder reflow environment. If the part is attached in a reflow oven, the temperature ramp rate should not exceed 3 C per second; maximum temperature should not exceed 260 C. If the part is manually attached, precaution should be taken to insure that the part is not subjected to temperatures exceeding 260 C for more
Figure 8. SKY77181 ESD Sensitivity Areas
Various failure criteria can be utilized when performing ESD testing. Many vendors employ relaxed ESD failure standards, which fail devices only after "the pad fails the electrical specification limits" or "the pad becomes completely nonfunctional". Skyworks employs most stringent criteria, fails devices as soon as the pad begins to show any degradation on a curve tracer.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200643A * Skyworks Proprietary and Confidential Information. * Products and product Information are subject to change without notice. * January 7, 2008
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PRELIMINARY DATA SHEET
SKY77181 POWER AMPLIFIER MODULE FOR WCDMA (880-915 MHz)
To avoid ESD damage, both latent and visible, it is very important that the product assembly and test areas follow the Class-1 ESD * Personnel Grounding - Wrist Straps - Conductive Smocks, Gloves and Finger Cots - Antistatic ID Badges * Protective Workstation - Dissipative Table Top - Protective Test Equipment (Properly Grounded) - Grounded Tip Soldering Irons - Solder Conductive Suckers - Static Sensors
handling precautions listed below.
* Facility - Relative Humidity Control and Air Ionizers - Dissipative Floors (less than 109 to GND) * Protective Packaging and Transportation - Bags and Pouches (Faraday Shield) - Protective Tote Boxes (Conductive Static Shielding) - Protective Trays - Grounded Carts - Protective Work Order Holders
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 10
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Ordering Information
Model Number SKY77181 Manufacturing Part Number SKY77181 Product Revision Package MCM3x3LM Operating Temperature -20 C to 85 C
Revision History
Revision A Level Date January 7, 2008 Description Initial Issue - Preliminary Information
References
Application Note: PCB Design and SMTP Assembly/Rework, Document Number 101752 Application Note: Tape and Reel Information - RF Modules, Document Number 101568 Standard SMTP Reflow Profiles: JEDEC Standard J-STD-020
(c) 2007, Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. ("Skyworks") products. These materials are provided by Skyworks as a service to its customers and may be used for informational purposes only. Skyworks assumes no responsibility for errors or omissions in these materials. Skyworks may make changes to its products, specifications and product descriptions at any time, without notice. Skyworks makes no commitment to update the information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from future changes to its products and product descriptions. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as may be provided in Skyworks' Terms and Conditions of Sale for such products, Skyworks assumes no liability whatsoever. THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, RELATING TO SALE AND/OR USE OF SKYWORKSTM PRODUCTS INCLUDING WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. SKYWORKS FURTHER 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 SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THESE MATERIALS. Skyworks(R) products are not intended for use in medical, lifesaving or life-sustaining applications. Skyworks' customers using or selling Skyworks(R) 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. The following are trademarks of Skyworks Solutions, Inc.: Skyworks(R), the Skyworks symbol, and "Breakthrough Simplicity"(R). Product names or services listed in this publication are for identification purposes only, and may be trademarks of third parties. Third-party brands and names are the property of their respective owners. Additional information, posted at www.skyworksinc.com, is incorporated by reference.

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