skyworks solutions, inc. ? phone [781] 376 - 3000 ? f ax [781] 376 - 3100 ? sales@skyworksinc.com ? www.s kyworksinc.com 200095g ? skyworks proprietary information ? products and product informatio n are subject to change without notice ? february 22 , 2011 1 data sheet smv1770 - 079lf : hyperabrupt junction tuning varactor applications ? low - noise and wideband uhf and vhf vcos ? high - volume, low - cost battery - powered tuning circuits features ? low series resistance ? high capacitance ratio ? ultra - small sc - 79 package ( msl1, 260 c per jedec j - s td - 020) description the smv1770 - 079lf is a silicon hyperabrupt junction varactor diode specifically designed for battery operation . the specified high capacitance ratio and low reverse voltage make this varactor appropriate for low phase noise volt age - controlled oscillator s (vco s ) used at frequencies in wireless systems up to and above 2.5 ghz . table 1 describes the package and marking of the smv1770 - 079lf varactor. table 1. packaging and marking single sc - 79 green? smv1770 - 079lf marking: cath ode l s = 0 .7 nh the pb- free symbol or lf in the part number denotes a lead - free, rohs - compliant packag e unless otherwise noted as green?. tin/lead (sn/pb) packaging is not recommended for new designs .
data sheet ? smv1770 - 079lf varac tor skyworks solutions, inc. ? phone [781] 376 - 3000 ? fax [781] 376 - 3100 ? sales@skyworks inc.com ? www.skyworksinc.com 2 february 22 , 2011 ? skyworks proprietary information ? products and product informatio n are subject to change without notice ? 200095g table 2. smv1770 - 079lf absolute maximum rati ngs parameter symbol minimum typical maximum units reverse voltage v r 1 2 v forward current i f 20 ma power dissipation p dis 250 mw operating temperature t op C 55 +125 c storage temperature t stg C 55 +150 c note: exposure to maximum rating cond itions for extended periods may reduce device reliability. there is no damage to device with only one parameter set at the li mit and all other parameters set at or below their nominal value. exceeding any of the limits listed here may result in permanent d amage to the device. caution : although this device is designed to be as robust as possible, electrostatic discharge (esd) can damage this device. this devi ce must be protected at all times from esd. static charges may easily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. industry - standard esd precautions should be used at all times. the smv1770 - 079lf varactor is a class 0 human body model (hbm) esd device. table 3. smv1770 - 079lf electrical s pecifications (note 1) ( t op = 25 c, unless otherwise noted) parameter symbol test condition min typical max units reverse current i r v r = 8 v 20 na capacitance c t f = 1 mhz v r = 0.5 v v r = 2.5 v 22.1 7.7 23.6 8.6 25.1 9.8 pf pf capacitance ratio c tr c t @ 0.5 v/ c t @ 2.5 v 2.3 2.7 C series r esistance r s f = 470 mhz, v r = 1 v 0. 4 0.5 breakdown voltage v br i r = 10 m a 12 v note 1: performance is guaranteed only under the conditions listed in this table. electrical and mechanical specifications the absolute maximum ratings of the smv1770 - 079lf varactor are provided in table 2. el ectrical specifications are provided in table 3. typical capacitance values are listed in table 4. t ypical performance characteristics for the smv1770 - 079lf varactor are illustrated in figures 1 and 2. the spice model for the smv1770 - 079lf varactor is show n in figure 3 and the associated model parameters are provided in table 5 . package dimensions are shown in figure 4 , and tape and reel dimensions are provided in figure 5 . package and handling information instructions on the shipping container label regard ing exposure to moisture after the container seal is broken must be followed. otherwise, problems related to moisture absorption may occur when the part is subjected to high temperature during solder assembly. the smv1770 - 079lf varactor i s rated to moistur e sensitivity level 1 (msl1) at 260 c. it can be used for lead or lead - free soldering. for additional information, refer to the skyworks application note, solder reflow information , document number 200164. care must be taken when attaching this product, w hether it is done manually or in a production solder reflow environment. production quantities of this product are shipped in a standard tape and reel format.
data sheet ? smv1770 - 079lf varactor skyworks solutions, inc. ? phone [781] 376 - 3000 ? fax [781] 376 - 3100 ? sales@skyworks inc.com ? www.skyworksinc.com 200095g ? skyworks proprietary information ? products and product informatio n are subject to change without notice ? february 22 , 2011 3 table 4. capacitance vs reverse voltage v r (v) c t (pf) 0 31.2 0.5 23.6 1.0 17.8 1.5 13.7 2.0 10.7 2.5 8.6 3.0 7.0 3.5 5.9 4.0 5.5 4.5 5.2 5.0 5.0 typical performance characteristics figure 1. capacitance vs voltage figure 2. relative capacitance change vs temperature
data sheet ? smv1770 - 079lf varac tor skyworks solutions, inc. ? phone [781] 376 - 3000 ? fax [781] 376 - 3100 ? sales@skyworks inc.com ? www.skyworksinc.com 4 february 22 , 2011 ? skyworks proprietary information ? products and product informatio n are subject to change without notice ? 200095g figure 3 . spice model table 5 . spice model parameters part number c jo (pf) v j (v) m c p (pf) r s ( l s (nh) smv1770 - 079lf 31 12 8 2 0.4 0.8
data sheet ? smv1770 - 079lf varactor skyworks solutions, inc. ? phone [781] 376 - 3000 ? fax [781] 376 - 3100 ? sales@skyworks inc.com ? www.skyworksinc.com 200095g ? skyworks proprietary information ? products and product informatio n are subject to change without notice ? february 22 , 2011 5 figure 4. sc- 79 package dimensions figure 5 . sc- 79 tape and reel dimensions
data sheet ? smv1770 - 079lf varac tor skyworks solutions, inc. ? phone [781] 376 - 3000 ? fax [781] 376 - 3100 ? sales@skyworks inc.com ? www.skyworksinc.com 6 february 22 , 2011 ? skyworks proprietary information ? products and product informatio n are subject to change without notice ? 200095g copyright ? 2002- 200 6, 2009 , 2010 , 2011 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 cus tomers and may be used for informational purposes only by the customer. skyworks assumes no responsibility for errors or omis sions in these materials or the information contained herein. skyworks may change its documentation, products, services, specificat ions 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 di fficulties arising from any future change s. 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 materials, products or information provided hereunder, including the sale, distributio n, reproduction or use of skyworks products, information or materials, except as may be provided in skyworks terms and condit ions 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 acc uracy 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 consequent ial damages, inc luding 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 i n 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 publis hed 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 t o minimize these and other risks. skyworks assumes no lia bility for applications assistance, customer product design, or damage to any equipment resulting from the use of skyworks products outs ide of stated published specifications or parameters. skyworks, the skyworks symbol, and breakthrough simplicity are t rademarks 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, incl uding relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference.
|
