skyworks solutions, inc. ? phone [781] 376 - 3000 ? fax [781] 376 - 3100 ? sales@skyworksinc.com ? www.skyworksinc.com 202736b ? skyworks proprietary and confidential information ? products and product information are subject to change without notice. ? jabnuary 27, 2014 1 product summary sky 77573 - 31 t x - rx f ront - end m odule for quad - band gsm / gprs / edge and td - scdma w / 4 - band antenna switch support applications ? quad - band cellular handsets encompassing - class 4 gsm850/900 - class 1 dcs1800 / pcs1900 - class 12 gprs multi - slot operation - edge linear modulation - td - scdma bands 39/34 - 4 - band wcdma antenna switch support features ? small , low profile package - 6 mm x 6 mm x 0.9 mm - 42- pad configuration ? high efficiency ? tx - vco - to - antenna and antenna - to - rx - saw filter rf interface ? single rf input description sky 77573- 31 is a transmit and receive front end module (fem) designed in a very low profile ( 0.9 mm), compact form factor for quad - band cellular handsets comprising gsm850/900, dcs1800, and pcs1900 operation 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 , edge linear modulation , and td - wcdma (bands 39/34) . wcdma switch - through support is provided by four dedicated high - linearity ports . the module consists of a gsm850/900 pa and dcs1800/pcs1900 pa block, impedance - matching circuitry for 50 input and output impedances, tx harmonic filtering, high linearity - low insertion loss switches, and a multi - function power amplifier control (mfc) bl ock.the internal mfc function and interface circuitry is provided by a bicmos ic. . fabricated in ingap/gaas, the heterojunction bipolar transistor (hbt) pa block s support the gsm850/900 bands and dcs1800/pcs1900 bands. both pa blocks share common power su pply pad s to distribute current. the output of the pa block and the outputs to the eight receive pad s connect to the antenna pad through a highly linear antenna switch. the wcdma and rx ports feature a near 0 volts dc offset level, which eliminates any nee d for external blocking capacitors. the ingap/gaas die, switch die , s ilicon (si) controller die, and passive components are mounted on a multi - layer laminate substrate and the entire assembly is encapsulated with plastic overmold. t he sky 77573- 31 rf i/o p orts are internally matched to a 50 load to reduce the number of external components for a quad - band design. extremely low leakage current of the fem maximizes handset standby time. band selection and control of transmit and receive rf signal flows are p erformed via six external control pad s (see figure 1) . mode of operation , tx , rx , band (gsm850, gsm900, dcs, pcs, and umts) are cont rolled through the 7 logic inputs lb_en, hb_en, mode0, mode1, sw 0 , sw 1 , and spdt .
or d ering information product name manufacturing part number evaluation board part number sky 77573 - 31 t x - r x f ront - e nd m odule sky 77573 - 31 copyright ? 2013, skyworks solutions, inc. all rights reserve d . 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 descriptio n s 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 di fficulties arising from any future changes. no license, whether exp ress, 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, statutor y, or otherwise, i ncluding 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 t he 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 consequent ial 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 m aterials 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 d o 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 speci fications as a re sult of design defects, errors, or operation of products outside of published parameters or design specifications. customers should include design and operating safeguards t o minimize these and other risks. skyworks assumes no liability for applications as sistance, customer product design, or damage to any equipment resulting from the use of skyworks products outside of stated p ublished specifications or parameters. skyworks, the skyworks symbol, breakthrough simplicity, dcr, helios, hip3, innovation to g o, 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 th eir respective owners. additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference.
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