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skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@sk yworksinc.com ? www.skyworksinc.com 201089c ? skyworks proprietary and confiden tial information ? produc ts and product information ar e subject to change witho ut notice ? july 7, 2009 1 data sheet SKY65053-377LF: 0.45-6.0 ghz low noise transistor applications ? wireless infrastructure: wlan, wimax, broadband, cellular base stations ? test instrumentation ? lna for gps receivers ? satellite receivers features ? externally matched for wideband operation ? noise figure = 0.6 db @ 2.4 ghz of device only ? noise figure = 0.8 db @ 2.4 ghz including matching network loss ? gain = 16.5 db @ 2.4 ghz, 5 v, 55 ma ? oip3 = +33.5 dbm @ 2.4 ghz, 5 v, 55 ma ? op1db = +15.5 dbm @ 2.4 ghz, 5 v, 55 ma ? adjustable supply current, 15 to 100 ma ? unconditionally stable to 18 ghz with reference design circuit ? small, qfn (4-pin, 2 x 2 mm) pb-free package (msl3, 260 c per jedec j-std-020) figure 1. SKY65053-377LF block diagram description the SKY65053-377LF is a high performance, n-channel low- noise transistor. the device is fabricated from skyworks advanced depletion mode phemt process and is provided in a 2 x 2 mm, 4-pin quad flat no-lead (qfn) package. the transistors low noise figure (nf), high gain, and excellent 3 rd order intercept point (ip3) allow the device to be used in various receiver and transmitter applications. a functional block diagram is shown in figure 1. the pin configuration and package are shown in figure 2. signal pin assignments and functional pin descriptions are provided in table 1. 12 43 drain s our c e s our c e g ate figure 2. SKY65053-377LF pinout C 4-pin qfn (top view)
data sheet ? SKY65053-377LF low noise transistor skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@sk yworksinc.com ? www.skyworksinc.com 2 july 7, 2009 ? skyworks proprietary and confidential information ? products a nd product information are subject to change without notice ? 201089c table 1. SKY65053-377LF signal descriptions pin # name description pin # name description 1 drain rf output. supply voltage required through external rf choke. 3 gate rf input 2 source source lead. provides dc self-biasing point and ac ground. 4 source source lead. provides dc self-biasing point and ac ground. functional description the SKY65053-377LF is a depletion mode phemt designed for low noise, high frequency applications that demand high linearity. the SKY65053-377LF has a typical nf of 0.8 db tested at the 2.4 ghz wireless lan frequency band. a gain of 16.5 db typical is achieved using the same circuit. the SKY65053-377LF can be used for any application from 450 mhz up to 6 ghz. biasing to properly bias a depletion mode phemt, both the gate and drain of the device must be properly biased. at v gs = 0 v and v ds 2v, the device is in its saturated state and draws the maximum amount of current, i dss . typically, the device achieves the best balance of noise and linearity performance at v ds = 5v and i ds = 55 ma. to control i ds , v gs must be biased with a negative voltage supply. to eliminate the need for a negative dc supply, self-biasing should be used when a resistor is placed between one of the source leads and ground. a bypass capacitor should be placed in parallel to this resistor to provide an rf ground and to ensure performance at the operating frequency remains unchanged. when current flows from drain to source and through the resistor, the source voltage becomes biased above dc ground. the gate pin of the device should be left unbiased at 0 v, which creates the desired negative v gs value. this greatly simplifies the design by eliminating the need for a second dc supply. rf matching networks the circuit schematic (see figure 12) shows the recommended rf matching network used for the 2.4 ghz wireless lan frequency band. components c1, c2, l1, and l2 provide the necessary impedance match for nf and input return loss. circuit board and input matching structure losses on the input of the amplifier add directly to the overall nf of the amplifier. it is critical to minimize rf trace lengths and to use high-q components to achieve optimal nf performance. components r1 and c10 provide self-bias for the device and rf grounding for one of the two source leads. component c6 is placed on the opposing source lead and is used to tune the transistors internal source inductance. the effect of source inductance varies with frequency. too little source inductance increases gain and high frequency stability, but at the cost of decreased in-band stability. too much source inductance decreases high frequency stability and gain, but increases in-band stability. it is very important to find the optimum tuning of source inductance that balances all of these variables. the output matching topology is typical for an rf amplifier. component l4 is the rf choke that prevents rf signals from reaching the dc supply. component c11 is the output dc blocking capacitor. components c12 and l6 provide the best impedance match for best linearity performance. electrical and mechanical specifications the absolute maximum ratings of the SKY65053-377LF are provided in table 2. the recommended operating conditions are specified in table 3 and electrical specifications are provided in table 4. performance characteristics for the SKY65053-377LF are illustrated in figures 3 through 10.
data sheet ? SKY65053-377LF low noise transistor skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@sk yworksinc.com ? www.skyworksinc.com 201089c ? skyworks proprietary and confiden tial information ? produc ts and product information ar e subject to change witho ut notice ? july 7, 2009 3 table 2. SKY65053-377LF absolute maximum ratings parameter symbol minimum typical maximum units supply voltage v dd 6 v input power p in +15 dbm gate to source voltage v gs C5.0 v gate to drain voltage v gd C5.0 v drain to source current i ds 110 ma gate to drain current i gd 100 a power dissipation p dis 240 mw junction temperature t j 150 c storage temperature t stg C65 +125 c operating temperature t op C40 +85 c thermal resistance jc 220 c/w note: exposure to maximum rating conditions for extended periods may reduce device reliability. there is no damage to device with on ly one parameter set at the limit and all other parameters set at or below their nominal value. 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 eas ily 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. table 3. SKY65053-377LF recommended operating conditions parameter symbol minimum typical maximum units operating frequency f 0.45 6.0 ghz supply voltage v dd 2.00 5.00 5.25 v supply current i dd 15 55 100 ma table 4. SKY65053-377LF electrical specifications (note 1) (1 of 2) (t op = +25 c, characteristic impedance [z o ] = 50 , v dd = 5 v, i dd = 55 ma, parameters include recommended matching networks, unless otherwise noted) parameter symbol test condi tion min typical max units saturated drain current i dss v ds = 6 v, v gs = 0 v 80 100 120 ma pinchoff voltage v p v ds = 6 v, i ds = 2.5% of i dss C0.95 C0.80 C0.65 v transconductance g m v ds = 6 v, g m = i ds / v gs , measured at i ds = 20% of i dss 80 120 160 ms gate leakage current i gss v gd = v gs = C3 v 1 200 a noise figure nf1 (note 2) nf2 (note 3) 0.6 0.8 db db gain |s 21 | 16.5 db input return loss |s11| C12 db output return loss |s22| C7 db
data sheet ? SKY65053-377LF low noise transistor skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@sk yworksinc.com ? www.skyworksinc.com 4 july 7, 2009 ? skyworks proprietary and confidential information ? products a nd product information are subject to change without notice ? 201089c table 4. SKY65053-377LF electrical specifications (note 1) (2 of 2) (t op = +25 c, characteristic impedance [z o ] = 50 , v dd = 5 v, i dd = 55 ma, parameters include recommended matching networks, unless otherwise noted) parameter symbol test condi tion min typical max units reverse isolation |s12| C25 db 3 rd order output intercept point oip3 p out = +5 dbm/tone, 1 mhz spacing +33.5 dbm 3 rd order input intercept point iip3 p out = +5 dbm/tone, 1 mhz spacing +17 dbm 1 db output compression point op1db +15.5 dbm 1 db input compression point ip1db 0 dbm stability unconditionally stable up to 18 ghz >1 k note 1: performance is guaranteed only under the conditions listed in th is table and is not guaranteed over the full operating or stor age temperature ranges. exceeding any of the conditions listed here may result in permanent damage to the device. oper ation at elevated temperatures may reduce reliability of the devi ce. note 2 : nf of device only. input rf connector, board, and i nput matching network loss de-e mbedded from measurement. note 3 : nf of device and matching network. input rf conne ctor and board loss de-emb edded from measurement. typical performance characteristics (t op = +25 c, characteristic impedance [z o ] = 50 , v dd = 5 v, i dd = 55 ma, includes recommended 2.4 ghz matching network, unless otherwise noted) 12 13 10 11 14 15 1 6 17 18 1 9 20 1. 6 1.8 2.0 2.2 2.4 2. 6 2.8 3.0 frequency ( g hz) s mall s ignal g ain (db) C 40 o c +25 o c +85 o c figure 3. small signal gain vs frequency over temperature (p in = C20 dbm) C25 C20 C15 C10 C5 0 input return lo ss (db) C 40 o c +25 o c +85 o c 1. 6 1.8 2.0 2.2 2.4 2. 6 2.8 3.0 frequency ( g hz) figure 4. input return loss vs frequency over temperature (p in = C20 dbm)
data sheet ? SKY65053-377LF low noise transistor skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@sk yworksinc.com ? www.skyworksinc.com 201089c ? skyworks proprietary and confiden tial information ? produc ts and product information ar e subject to change witho ut notice ? july 7, 2009 5 C30 C25 C20 C15 C50 C45 C40 C35 C10 C5 0 recver s e i s olation (db) 1. 6 1.8 2.0 2.2 2.4 2. 6 2.8 3.0 frequency ( g hz) C 40 o c +25 o c +85 o c figure 5. reverse isolation vs frequency over temperature (p in = C20 dbm) 0 0.2 0.4 0. 6 0.8 1.0 1.2 noi s e figure (db) 2.30 2.35 2.40 2.45 2.50 2.55 2. 6 0 frequency ( g hz) C 40 o c +25 o c +85 o c figure 7. noise figure vs frequency over temperature 14.5 15.0 14.0 15.5 1 6 .0 1 6 .5 17.0 17.5 g ain (db) C20 C15 C10 C5 0 +5 input power (dbm) C 40 o c +25 o c +85 o c figure 9. gain vs input power over temperature (f = 2.4 ghz) C12 C10 C8 C 6 C20 C18 C1 6 C14 C4 C2 0 output return lo ss (db) 1. 6 1.8 2.0 2.2 2.4 2. 6 2.8 3.0 frequency ( g hz) C 40 o c +25 o c +85 o c figure 6. output return loss vs frequency over temperature (p in = C20 dbm) +10 +15 0 +5 +20 +25 +30 +35 +40 oip3 (dbm) 4.0 4.2 4.4 4. 6 4.8 5.0 5.2 s upply voltage (v) C 40 o c +25 o c +85 o c figure 8. oip3 vs supply voltage (f = 2.4 ghz, tone spacing = 10 mhz, p out = +5 dbm/tone) 2 3 1 0 4 5 6 7 8 1, 2 024 6 81012141 6 18 frequency ( g hz) 1 C 40 o c 1 +25 o c 1 +85 o c 2 C 40 o c 2 +25 o c 2 +85 o c figure 10. stability vs frequency over temperature (p in = C20 dbm)
data sheet ? SKY65053-377LF low noise transistor skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@sk yworksinc.com ? www.skyworksinc.com 6 july 7, 2009 ? skyworks proprietary and confidential information ? products a nd product information are subject to change without notice ? 201089c evaluation board description the SKY65053-377LF evaluation board is used to test the performance of the SKY65053-377LF low noise transistor. an assembly drawing for the evaluation board is shown in figure 11. the evaluation board schematic diagram is shown in figure 12. table 5 provides the bill of materials (bom) list for evaluation board components. circuit design considerations input and output traces have been minimized to reduce losses. all surface mount components are 0402-sized to reduce component parasitics. use of 0603 or larger components is not recommended. component spacing has also been minimized. the board is provisioned with two rf connectors and a dc launch. rf connector and board loss up to component c1 is approximately 0.1 db at 2.4 ghz. it is very important to place multiple ground vias as close to shunt components as possible. this ensures proper grounding and circuit performance. board material is 10 mil vt47 fr4 with 1 oz. copper cladding. the rf traces are 50 . caution: do not ground the exposed pad. evaluation board test procedure step 1: connect rf test equipment to amplifier input/output sma connectors. step 2: connect dc ground. step 3: connect vdd to a +5 v supply with a current limit of 100 ma. verify that the board draws approximately 55 ma. step 4: apply rf signal or noise source.
data sheet ? SKY65053-377LF low noise transistor skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@sk yworksinc.com ? www.skyworksinc.com 201089c ? skyworks proprietary and confiden tial information ? produc ts and product information ar e subject to change witho ut notice ? july 7, 2009 7 s1512 caution: do not ground the exposed pad. figure 11. SKY65053-377LF evaluation board assembly diagram c 1 c 2 c 4 c 5 l1 l2 l5 l4 l3 rf output vdd rf input r1 r2 s1509 c 11 c6 c 12 l 6 c 3 c 13 c 14 c 10 c 7 c 15 figure 12. SKY65053-377LF evaluation board schematic
data sheet ? SKY65053-377LF low noise transistor skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@sk yworksinc.com ? www.skyworksinc.com 8 july 7, 2009 ? skyworks proprietary and confidential information ? products a nd product information are subject to change without notice ? 201089c table 5. SKY65053-377LF evaluation board bill of materials component value size ma nufacturer/part series c1 33 pf 0402 murata grm015 c2 1.2 pf 0402 murata gjm015 c3 0.3 pf 0402 murata gjm015 c4, c5, c7, c8, c9, c14 dnp c6 10000 pf 0402 murata grm015 c10 10000 pf 0402 murata grm015 c11 3.6 pf 0402 murata gjm015 c12 0.3 pf 0402 murata gjm015 c13 3.9 pf 0402 murata grm015 c15 1000 pf 0402 murata grm015 l1 12 nh 0402 coilcraft hp l2 2 nh 0402 coilcraft hp l3 dnp l4 5.6 nh 0402 coilcraft hp l5 0 0402 panasonic l6 6.8 nh 0402 taiyo yuden hk r1 4.7 0402 panasonic r2 39 0402 panasonic package dimensions the pcb layout footprint for the SKY65053-377LF is shown in figure 13. typical case markings are shown in figure 14. package dimensions for the 4-pin qfn are shown in figure 15, and tape and reel dimensions are provided in figure 16. package and handling information since the device package is sensitive to moisture absorption, it is baked and vacuum packed before shipping. instructions on the shipping container label regarding 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 SKY65053-377LF is rated to moisture sensitivity level 3 (msl3) at 260 c. it can be used for lead or lead-free soldering. care must be taken when attaching this product, whether 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. for packaging details, refer to the skyworks application note, discrete devices and ic switch/attenuators tape and reel package orientation , document number 200083.
data sheet ? SKY65053-377LF low noise transistor skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@sk yworksinc.com ? www.skyworksinc.com 201089c ? skyworks proprietary and confiden tial information ? produc ts and product information ar e subject to change witho ut notice ? july 7, 2009 9 4x 0. 6 00 2x 0.300 2x 0. 6 00 0. 6 00 detail b detail a (3x) 0. 6 50 0.55 0.55 0.40 0.30 1.300 pin 1 package outline 1.250 s ee detail a for s olderable area s ee detail b for s olderable area s141 6 caution: do not ground the exposed pad. figure 13. SKY65053-377LF pcb layout footprint pin 1 indicator s kywork s part # s 53 figure 14. typical case markings (top view)
data sheet ? SKY65053-377LF low noise transistor skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@sk yworksinc.com ? www.skyworksinc.com 10 july 7, 2009 ? skyworks proprietary and confidential information ? products a nd product information are subject to chang e without notice ? 201089c s1411 2.00 0.02+0.03/C0.02 0. 6 +0.1/C0.15 1.2+0.1/C0.15 0.55+0.05/C0.04 0.4 0.1 0.4 0.1 0.4 0.05 0.3 0.05 r 0.15 (0. 6 00) (0.300) a b c 2.00 2x pin 1 indicator 1.25 1.30 2x 0. 6 5 detail b 4x 0.20 min detail a expo s ed pad 0.10 c 2x 0.10 c 0.10 c 0.08 3 5 c 4x 0.10 c ab m top view s ide view bottom view detail b (3 place s ) detail a all measurements are in millimeters. dimensioning and tolerancing according to asme y14.5m-1994. figure 15. SKY65053-377LF 4-pin qfn package dimensions
data sheet ? SKY65053-377LF low noise transistor skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@sk yworksinc.com ? www.skyworksinc.com 201089c ? skyworks proprietary and confiden tial information ? produc ts and product information ar e subject to change witho ut notice ? july 7, 2009 11 notes: 1. carrier tape: black conductive polystyrene. 2. cover tape material: transparent conductive hsa. 3. cover tape size: 5.40 mm width. 4. ten sprocket hole pitch cumulative tolerance 0.20 mm. 5. ao and bo measurement point to be 0.30 mm from bottom pocket. 6. all measurements are in millimeters. 2.30 (ao) 2.30 (bo) 8.00 +0.30/C0.10 4.00 (note 4) 4.00 0.10 3.50 0.05 2.00 0.05 1.75 0.10 0.30 0.05 (t) a b 1.00 (ko) a b b a pin #1 ? 1.50+ 0.10/C0.00 ? 1.00 min. r0.30 typ. s1555 figure 16. SKY65053-377LF tape and reel dimensions
data sheet ? SKY65053-377LF low noise transistor skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@sk yworksinc.com ? www.skyworksinc.com 12 july 7, 2009 ? skyworks proprietary and confidential information ? products a nd product information are subject to chang e without notice ? 201089c ordering information model name manufacturing part number evaluation board part number SKY65053-377LF low noise transistor SKY65053-377LF (pb-free package) SKY65053-377LF (2.4 ghz) copyright ? 2009 skyworks solutions, inc. all rights reserved. information in this document is provided in connection with skyw orks solutions, inc. (skyworks) products or services. these m aterials, including the information co ntained herein, are provided by skyworks as a service to its customers and may be used for info rmational purposes only by the cu stomer. skyworks assumes no res ponsibility for errors or omissions in these materials or the information contained herein. skyworks may change its documentat ion, products, services, specific ations or product descriptions at any time, without notice. sk yworks makes no commitment to update the materials or information and shall have no responsi bility whatsoever for conflicts, incompatibilities, or other diff iculties arising from any future changes. no license, whether express, implied, by es toppel or otherwise, is granted to any in tellectual property rights by this document . skyworks assumes no liability for any materials, products or information provided hereunder, including the sale, distribution, re production or use of skyworks products, information or mate rials, except as may be provided in skyworks terms and conditions of sale. the materials, products and information are pr ovided as is without warranty of any ki nd, whether express, implied, statutory, or otherwise, including fitness for a particular purpose or use, merchantability, performance, qualit y or non-infringement of any intellectual property right; all su ch warranties are hereby expressly disclaimed. skyworks does not warrant the accura cy or completeness of the information, text, graphics or other items contained within these ma terials. skyworks shall not be liable for any damages, including but not limited to any special, indirect, incidental, statutory, or consequentia l damages, including without limitation, lost revenues or lost profits that may result from the use of the materials or information, wheth er or not the recipient of mat erials has been advised of the possibility of such damage. skyworks products are no t intended for use in medical, lifesaving or life-su staining applications, or other equipment in which the failure of the skyworks products could lead to personal injury, death, physical or environmental damage. skyw orks customers using or selli ng 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 us ing skyworks products , which may deviate from published specifi cations as a result of design de fects, errors, or operation of products outside of published pa rameters or design specifications. customers sh ould include design and operating safeguards to minimize these and other risks. skyworks assumes no liability for applications assistance, customer product de sign, or damage to any equipment resulting from the use of skyw orks products outsid e of stated published specifications or parameters. skyworks, the skyworks symbol, a nd breakthrough simplicity are trademarks or registered tradem arks of skyworks solutions, inc ., in the united states and othe r countries. third-party brands and names are for identification purposes only, and are the proper ty of their respective owners. additional information, includ ing relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference.

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