skyworks solutions, inc. ? phone [781] 376 - 3000 ? fax [781] 376 - 3100 ? sales@skyworksinc.com ? www.sk yworksinc.com 203212b ? skyworks proprietary and confidential information ? products and product information are subject to change without notic e. ? june 11 , 2014 1 product summary sky77597 - 11 t x - rx fem for quad - band gsm/gprs/edge , and dual - ba nd td - scdma w/ six linear trx switch ports, and high band power amplifier output for svlte applications w/ sp2t switch applications ? quad - band gsm/edge and dual - band td - scdma cellular handsets encompassing - class 4 gsm850/900 - class 1 dcs1800 / pcs1900 - clas s 12 gprs multi - slot operation - six low insertion loss / high linearity interchangeable trx switch ports - linear edge operation - td - scdma bands 34/39 features ? small, low profile package - 6 mm x 6 mm x 0. 9 mm - 28- pad configuration ? low input power range 0 dbm to 6 dbm ? high efficiency ? tx - vco - to - antenna and antenna - to - rx - saw filter rf interface ? tx harmonics below C 40 dbm ? current limiting for over - voltage protection and extended battery life ? i/o matched internally to 50 ? high impedance control inputs : 20 a, ma ximum ? power control circuitry built - in for improved trp variation description sky77597 - 11 is a transmit and receive front end mod ule (fem) designed in a very low profile (0. 9 mm) and compact form factor for quad - band cellular handsets comprising gsm850/900, dcs1800 / pcs1900 operation and dual - band td - scdma bands 34 and 39 operation a complete transmit vco - to - antenn a and antenna - to - r eceive saw filter solution. the fem also supports class 12 general packet radio service (gprs) multi - slot operation and linear edge operation . 3g switch - through support is provided by six dedicated high - linearity ports . high band tx (dcs1800) is brought ou t to a module pad through an integrated sp2t switch for svlte applications. the module consists of a gsm850/900 pa and dcs1800/pcs1900 /td - scdma pa block, impedance - matching circuitry for 50 input and output impedances, tx harmonic filtering, a high linearity / low insertion loss switch, and a cmos power amplifier control (pac) block. a custom silicon integrated circuit contains decoder circuitry to control the rf switch while providing a low current , external control interface. fabricated in gaas, the heterojunction bipolar transistor (hbt) pa block s support the gsm850/900 bands and dcs1800/pcs1900 bands and td - scdma bands 34/39 . both pa blocks share common power supply pad s to distribute current. the output of the pa block and the outputs to the six r eceive pad s connect to the antenna pad through a high - linear ity antenna switch. the 3g and rx ports feature a 0 v dc offset level which eliminates the need for external blocking capacitors. the gaas die, switch die , cmos controller die, and passive compone nts are mounted on a multi - layer laminate substrate and the entire assembly is encapsulated with plastic overmold. rf input and output ports of the sky77597 - 11 are internally matched to a 50 load to reduce the number of external components on the phone board . extremely low leakage current of the fem maximizes handset standby time. c ontrol of transmit and receive rf signal flows , and b and selection are performed by four external control pad s (s ee figure 1 on overleaf ). mode of operation , tx vs. rx , and ba nd (gsm850, gsm900, dcs 1800 , pcs 1900, and band s 34/39 ) are cont rolled with the four logic inputs: mode, txen, bs1, and bs2. proper timing of the tx e n input and the v ramp input ensures high isolation between the antenna and tx - vco while the vco is being tuned prior to the transmit burst. the integrated power amplifier control (pac) function provides envelope amplitude control while reducing sensitivity to input drive, temperature, power supply, and process variation. o utput po wer variation into mismatch is minimize d with skyworks finger - based integrated power amplifier control (fb - ipac) control circuit .
or d ering information product name order number evaluation board part number sky77597 - 11 tx - rx f ront - e nd m odule sky77597 - 11 en40 - d795 - 001 copyright ? 2014 , 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 r esponsibility for errors or omissions in these materials or the information conta ined herein. skyworks may change its documentation, products, services, specifications or product descriptions at any time, w ithout 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 docume nt. skyworks assumes no liability for any mat erials, products or information provided hereunder, including the sale, distribution, reproduction or use of skyworks products, information or ma terials, except as may be provided in skyworks terms and conditions of sale. the materials, products and inform ation 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 containe d within these materials. skyworks shall not be liable for any damages, including but not lim ited 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 m aterials has been adv ised 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 en vironmental damage. skyworks customers using or selling skyworks products for use in such applications do so at their own ris k 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 desig n defects, errors, or operation of products outside of published parameters or design specifications. customers should include desi gn 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 outs ide of stated published specificat ions or parameters. skyworks and the skyworks symbol are trademarks or registered trademarks of skyworks solutions, inc., in the united states and other count ries. third - party brands and names are for identification purposes only, and are the property of t heir respective owners. additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are i ncorporated by reference.
|
