SKY77148_06 SKYWORKS | Alldatasheet
Document overview
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- PDF pages: 14
Technical content
Features
- Low voltage positive bias supply - (3.2 V to 4.2 V)
- Good linearity
- High efficiency across wide dynamic range
- Dual-mode operation
- 7-pin package - 6 mm x 6 mm x 1.5 mm
- Power down control
- Low power state control
- CDMA2000 Skyworks offers lead (Pb)-free "environmentally friendly" packaging that is RoHS compliant (European Parliament for the Restriction of Hazardous Substances).
Description
The SKY77148 Power Amplifier Module (PAM) is a fully matched 7-pin surface mount module developed for Code Division Multiple Access (CDMA2000) handset and Wireless Local Loop applications. This small and efficient power amplifier packs full coverage of the 450–460 MHz bandwidth into a single compact package. The device meets the stringent CDMA2000 linearity requirements to and exceeding 29 dBm output power. A low current pin (VCONT) provides improved efficiency for the low RF power range of operation. The single Gallium Arsenide (GaAs) Microwave Monolithic Integrated Circuit (MMIC) contains all active circuitry within the module, which includes on-board bias circuitry as well as input and interstage matching circuits. Output match into a 50 Ω load is realized off-chip within the module package to optimize efficiency and power performance. This device is manufactured with Skyworks’ 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 SKY77148 is supplied directly from a three-cell Ni-Cd, a single-cell Li-Ion, or other suitable battery with a rated output in the 3.2 to 4.2 volt range. Setting the voltage on the low current reference pin to zero volts accomplishes power down. No external supply side switch is needed as typical “off” leakage is a few microamperes with full primary voltage from the battery. VCC1 (1) VCC2 (5) VREF (3) RF IN (2) (6) RF OUT GND (7) VCONT (4) Driver Stage Bias Input Match InterStage Match PA Output MatchDA Power Stage Bias 103018_001 MMIC MODULE Figure 1. Functional Block Diagram
Table 1. Absolute Maximum Ratings 1 1 No damage assuming only one parameter at a time is set at li mit with all other parameters set at or below nominal value. 2 Case Operating Temperature refers to the temperature of the GROUND PAD at the underside of the package. Table 2. Recommended Operating Conditions Table 3. Power Range Truth Table
Table 4. Electrical Specifications for CDMA Nominal Operating Conditions 1
1.98 MHz offset
1 Unless otherwise specified:
2 ACP is specified per CDMA2000 as the ratio of the total in-b and power (1.23 MHz BW) to adjacent power in a 30 kHz BW. 3 CDMA2000 is configured as DCCH = 9600, SCHO = 9600, PCH (Walsh 0) = –3.75 dB, and Peak-to-Average Ratio (CCDF = 1%) = 4.5 dB. 4 All phases, time = 10 seconds.
Table 5. Electrical Specifications for CDMA Recommended Operating Conditions 1 2 ACP is specified per CDMA2000 as the ratio of the total in-b and power (1.23 MHz BW) to adjacent power in a 30 kHz BW. 3 CDMA2000 is configured as DCCH = 9600, SCHO = 9600, PCH (Walsh 0) = –3.75 dB, and Peak-to-Average Ratio (CCDF = 1%) = 4.5 dB. 4 All phases, time = 10 seconds.
including worst case limits. Figure 2. SKY77148 Gain vs. Output Power
illustrates typical case markings.
0.15 A B C
0.2 A B C
Figure 11. SKY77148 Package Dimensions
OF PLACES DIMENSIONED WILL BE REDUCED. Thermal Via Array under PA areas. vias will improve thermal performance. Figure 12. Phone PCB Layout Footprint for 6 x 6, 7-Pad Package – SKY77148
Table 6. Precautions for Handling GaAs IC-based Products to Avoid Induced Damage
Ordering Information
Model Number Manufacturing Part Number Product Revision Package Operating Temperature SKY77148 SKY77148 –15 7-pin MCM L4 6 x 6 x 1.5 mm –30 °C to +85 °C
Revision History
Revision Level Date Description A October 19, 2005 Initial Release B May 12, 2006 Revise: Tables 2, 4 References Application Note: PCB Design and SMT Assembly/Rework, Document Number 101752 Application Note: Tape and Reel Information – RF Modules, Document Number 101568 JEDEC Standard J–STD015–020 © 2002–2006, 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 by the customer. Skyworks assumes no responsibility for errors or omissions in these materials. Skyworks may make changes to its documentation, 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 documentation, products, specifications and product descriptions. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by or under this document. Except as may be provided in Skyworks Terms and Conditions of Sale for such products, Skyworks assumes no liability whatsoever in association with its documentation, products, specifications and product descriptions. THESE MATERIALS ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED OR OTHERWISE, RELATING TO SALE AND/OR USE OF SKYWORKS 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 DAMAGES, INCLUDING SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THESE MATERIALS 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. 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. The following are trademarks of Skyworks Solutions, Inc.: Skyworks®, the Skyworks logo, and Breakthrough Simplicity®. Product names or services listed in this publication are for identification purposes only, and may be trademarks of Skyworks or other 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.