SKY77457 Skyworks Solutions, SKY77457 Datasheet

SKY77457

Manufacturer Part Number

SKY77457

Description

Front-End Module

Manufacturer

Skyworks Solutions

Datasheet

1.SKY77457.pdf (2 pages)

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PRODUCT SUMMARY

SKY77457 Front-End Module for LTE / EUTRAN Band V

(Tx 824-849 MHz), (Rx 869-894 MHz)

Applications

• Long-Term Evolution (LTE)

• Evolved Universal Terrestrial Radio

• 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

• Duplexer Tx-Rx attenuation and

• Integrated Power Detector,

• Low voltage positive bias supply:

• Supports low collector voltage

• Excellent linearity, efficiency

• Large dynamic range

• Low Profile 16-pad package:

• Analog bias current control in low

• InGaP BiFET Technology

• Skyworks Green™ Packaging

Access Network (EUTRAN)

- LTE: 25 dBm

- WCDMA: 26 dBm

isolation: 50 dB

interstage filter and duplexer

3.0 V to 4.6 V

operation down to 1.5 V

4 mm x 7 mm x 1.05 mm

power mode using VBA pad

201032A • Skyworks Proprietary and Confidential Information. • Products and product information are subject to change without notice. • February 13, 2009

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

Description

The SKY77457 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 1.05 mm package. The SKY77457 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 SKY77457 is

supplied via the VCC1 and VCC2 pads directly from a three-cell Ni-Cad, a single-cell Li-Ion,

or other suitable batteries with outputs in the 3.0 to 4.6 volt range, while the bias network is

powered up with the VCCB pad. DC-DC converter operation can be supported with lower

power operation down to 1.5V. 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 - layer laminate substrate technology and

is approximately half the size of individually packaged component solutions. The SKY77457

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

Related parts for SKY77457

SKY77457 Summary of contents

Page 1

... 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 1.05 mm package. The SKY77457 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 ...

Page 2

... 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. Product Revision SKY77457 Package Operating Temperature –20 ° °C ...

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