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SKY77445 Datasheet Preview

SKY77445 Datasheet

Front-End Module

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PRODUCT SUMMARY
SKY77445 Front-End Module for LTE / EUTRAN Band VII
(Tx 2500-2570 MHz), (Rx 2620-2690 MHz)
Applications
Long-Term Evolution (LTE)
Evolved Universal Terrestrial Radio
Access Network (EUTRAN)
Handsets and Data Cards
Features
QPSK, 16QAM, 64QAM modulations
Up to 20 MHz bandwidths
Up to 100 resource blocks
Linear power at 3.3 V
- LTE: 25 dBm
- WCDMA: 26 dBm
Duplexer Tx-Rx attenuation and
isolation: 50 dB
Integrated Power Detector,
interstage filter and duplexer
Low voltage positive bias supply:
3.0 V to 4.6 V
Supports low collector voltage
operation down to 1.5 V
Excellent linearity, efficiency
Large dynamic range
Low Profile 16-pad package:
4 mm x 7 mm x 1.1 mm
Analog bias current control in low
power mode using VBA pad
InGaP BiFET Technology
Skyworks Green™ Packaging
Description
The SKY77445 Front-End Module (FEM) is a fully matched, 16-pad surface mount module
developed for LTE/EUTRAN applications. Small and efficient, this LTE FEM integrates the
interstage filter, input and output matching, power amplifier, power detection, and duplexer
into a single 4 mm x 7 mm x 1.1 mm package. The SKY77445 meets the stringent spectral
linearity requirements of LTE with QPSK/16QAM modulations from 1.4 to 20MHz bandwidth
and full or partial resource block allocations with high power added efficiency. The FEM
incorporates Inter-Stage Filter and Duplexer, InGaP BiFET PA, and output power detector.
Integration of the RF front-end greatly simplifies the design of the 4G-compatible handset
radio or data card as all critical matching between the interstage filter, PA, power detection,
and duplexer is optimized within the single module component. By optimizing the efficiency
of the InGaP BiFET PA MMIC, reducing RF loss between the integrated components and
within the Duplexer itself, and improving the match between the PA and the Duplexer, this
FEM achieves low current at maximum output power that significantly reduces the power
dissipated in the LTE-enabled handsets or data cards. Primary bias to the SKY77445 is
supplied via the VCC1 and VCC2 pads directly from a three-cell Ni-Cad, a single-cell Li-Ion,
or other suitable battery with output in the 3.0 V to 4.6 volt range, and the bias network is
powered up with the VCCB pad. DC-DC converter operation can be supported with lower
power operation down to 1.5 V. Power down is accomplished by setting a logic low level on
the VEN pad. No external supply side switch is needed as typical “off” leakage is 100
microamperes with full primary voltage supplied from the battery. The VMODE pad is used to
switch between high and low power modes to reduce current consumption and gain in the
back – off conditions. VBA is used to further control the current consumption in the low
power mode.
This small package uses Skyworks’ low cost, multi-laminate substrate technology and is
approximately half the size of individually packaged component solutions. The SKY77445
front-end module can save handset and data card designers significant board space and
design-cycle time, and significantly simplify supply chain and sourcing of RF components.
Figure 1. Functional Block Diagram
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200871C • Skyworks Proprietary and Confidential Information. • Products and product information are subject to change without notice. • February 10, 2009
1




Skyworks Solutions

SKY77445 Datasheet Preview

SKY77445 Datasheet

Front-End Module

No Preview Available !

www.DataSheet4U.com
Ordering Information
Model Number
SKY77445
Manufacturing Part Number
SKY77445
Product Revision
Package
MCM 4 x 7 x 1.1 mm
Operating Temperature
–20 °C to 85 °C
© 2008 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 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 SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS
THAT MAY RESULT FROM THE USE OF THESE MATERIALS.
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 symbol, and "Breakthrough Simplicity"®. 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.


Part Number SKY77445
Description Front-End Module
Maker Skyworks Solutions
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SKY77445 Datasheet PDF






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