PRODUCT SUMMARY
SKY77584 Tx-Rx Quad-Band Front-End Module for GSM/
GPRS (824-915 MHz) (1710-1910 MHz) w/ Four Linear TRx
Switch Ports
Applications
•
Quad-band cellular handsets
encompassing
-
Class 4 GSM850/GSM900
-
DCS1800/PCS1900
-
Class 12 GPRS multi-slot
operation
-
EDGE downlink compatible
Description
SKY77584 is a transmit and receive Front-End Module (FEM) with integrated power amplifier
control designed in a low profile, compact form factor for quad-band cellular handsets comprising
GSM850/GSM900 and DCS1800/PCS1900 operation. The SKY77584 offers a complete Transmit
VCO-to-Antenna and Antenna-to-Receive SAW filter solution. The FEM also supports Class 12
General Packet Radio Service (GPRS) multi-slot operation and EDGE downlink.
The module consists of a GSM850/GSM900 PA block and a DCS1800/PCS1900 PA block,
impedance-matching circuitry for 50 ohm input and output impedances, Tx harmonics filtering,
high linearity / low insertion loss RF switch, and a Power Amplifier Control (PAC) block. One PA
block supports the GSM850 / GSM900 bands and the other PA block supports the DCS1800/
PCS1900 bands. Both PA blocks share common power supply pads to distribute current. The
output of each PA block and the outputs to the four receive pads are connected to the antenna pad
through an RF switch. Four broadband interchangeable receive ports provide flexibility to support
multimode and multiband configurations. The GaAs die, the CMOS die, the Switch die, and passive
components are mounted on a multi-layer laminate substrate. The assembly is encapsulated with
plastic overmold.
Band selection and control of transmit and receive are performed using four external control pads.
Refer to the block diagram in Figure 1 below. The band select pad, BS1, BS2, Mode, and TxEN
select GSM850, GSM900, DCS, and PCS modes of operation.
Transmit enable TxEN controls receive or transmit mode of the RF switch (Tx = logic 1). Proper
timing between transmit enable TxEN and Analog Power Control VRAMP allows for high isolation
between the antenna and Tx–VCO while the VCO is being tuned prior to the transmit burst.
The SKY77584 is compatible with logic levels from 1.2 V to 2.9 V for BS1, BS2, MODE, and TxEN
pads.
Features
•
High efficiency
•
Low transmit supply current
•
50
Ω
matched Input/Output
•
Tx–VCO-to-antenna and
antenna-to-Rx-SAW filter RF
interface
•
RF switch affords high
linearity, low insertion loss,
and 0 V DC on Rx ports
•
Small, low profile package
-
6 mm x 6 mm x 0.9 mm
-
28-pad configuration
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202746B • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice. • February 20, 2013
1
Ordering Information
Product Name
SKY77584 Tx-Rx Quad-Band Front-End Module
Order Number
SKY77584-11
SKY77584-21
Evaluation Board Part Number
Copyright
2013, 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, “Breakthrough Simplicity,” DCR, Helios, HIP3, Innovation to Go, Intera, iPAC, LIPA, Polar Loop, and System Smart 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.
Embedded System
京公网安备 11010802033920号
EEWORLD
