skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@ skyworksinc.com ? www.skyworksinc.com 200847k ? skyworks proprietary information ? products and product in formation are subject to cha nge without notice ? june 3, 2019 1 data sheet silicon schottky barrier diode bondable chips and beam leads applications ? detectors ? mixers features ? available in both p-type and n-type low barrier designs ? low 1/f noise ? large bond pad chip design ? planar passivated beam-lead and chip construction description skyworks beam-lead and chip schottky barrier detector diodes are designed for applications through 40 ghz in the ka band. they are made by the deposition of a suitable barrier metal on an epitaxial silicon substrate to form the junction. the process and choice of materials result in low series resistance along with a narrow spread of capacitance values for close impedance control. p-type silicon is used to obtain superior 1/f noise characteristics. n-type silicon is also available. beam-lead and chip diodes can be mounted on special customer substrates. unmounted beam-lead diodes are especially well suited for use in microwave integrated circuit (mic) applications. mounted beam- lead diodes can be easily used in mic, stripline, or other such circuitry. these universal chips are designed for a high degree of device reliability in both commercial and industrial uses. the offset bond pad assures that no mechanical damage occurs at the junction during the wire bonding. additionally, the 4 mil bond pad eliminates performance variation due to bonding, improves efficiency during manual operations, and is ideal for automated assembly. the choice of n- and p-type silicon allows the designer to optimize the silicon material for the intended application: ? doppler mixers and high-sensitivity detectors benefit from using the low noise characteristics of the p-type silicon. ? low conversion loss mixers and biased detectors can be designed using standard n-type material. applications these diodes are categorized by tangential signal sensitivity (tss) for detector applications in four frequency ranges: s, x, ku, and ka bands. however, they can also be used as modulators, high- speed switches, and low-power limiters. tss is a parameter that describes a diodes detector sensitivity. it is defined as the amount of signal power, below a one-milliwatt reference level, required to produce an output pulse with an amplitude sufficient to raise the noise fluctuations by an amount equal to the average noise level. tss is approximately 4 db above the minimum detectable signal. the p-type schottky diodes in this data sheet are optimized for low noise in the 1/f region. they require a small forward bias (to reduce video resistance) if efficient operation is required. the bias not only increases sensitivity but also reduces parameter variation downloaded from: http:///
silicon schottky barrier diodes skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@ skyworksinc.com ? www.skyworksinc.com 2 june 3, 2019 ? skyworks proprietary inform ation ? products and pro duct information are subject to change without notice ? 200847k due to temperature change. video impedance is a direct function of bias and follows the 26/l (ma) relationship. this is important to pulse fidelity, since the video impedance together with the detector output capacitance affects the effective amplifier bandwidth. bias does, however, increase typical noise, particularly in the 1/f region. therefore, it should be kept as low as possible (typically 5 to 50 a). additional bonding and handling methods are contained in the skyworks application notes, waffle pack chip carrier handling/opening procedure (document #200146) and diode chips, beam-lead diodes, capacitors: bonding methods and packaging (document #200532). electrical and mechanical specifications electrical and physical specifications for the silicon schottky barrier diodes are provided in tables 1 through 3. spice model parameters are defined in table 4. typical performance characteristics are shown in figures 1 through 4. typical video detector circuits are shown in figure 5. table 1. electrical specifications: beam-l ead p-type detector schottky diodes 1 frequency band part number electrical characteristics test frequency (ghz) outline drawing tss (dbm) 2 r v ( ) c j @ 0 v (pf) v f @ 1 ma (mv) v b @ 10 a (v) typ min max max x ddb2503-000 -50 500 700 0.15 200-350 2 10.00 491-006 ku ddb2504-000 -48 500 700 0.10 200-350 2 16.00 491-006 k ddb2265-000 -50 3 800 3 1200 3 0.10 300-450 3 24.15 491-006 1 performance is guaranteed only under the conditions listed in this table. 2 bias = 50 a video bandwidth = 10 mhz. 3 bias = 30 a table 2. electrical specifications: p-type detector schottky diode universal chips frequency band part number barrier electrical characteristics outline drawing r v ( ) tss (dbm) 1 c j @ 0 v (pf) v f @ 1 ma (mv) r t @ 10 ma ( ) 2 v b @ 10 a (v) typ min max max min ku cdb7620-000 low 537 -40 0.15 250-350 30 2 571-006 k cdb7619-000 low 735 -50 3 0.10 275-375 40 3 571-006 1 bias = 50 a video bandwidth = 10 mhz r v = 2800 2 rt is the slope resistance @ 10 ma. the maximum series resistance (rs) is calculated as: rs = rt C 2.8. 3 bias = 30 a downloaded from: http:///
data sheet ? silicon schottky barrier diodes skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@ skyworksinc.com ? www.skyworksinc.com 200847k ? skyworks proprietary information ? products and product in formation are subject to cha nge without notice ? june 3, 2019 3 table 3. electrical specifications: n-type detector schottky diode chips frequency band part number electrical characteristics r v ( ) outline drawing barrier v f @ 1 ma (mv) c j @ 0 v (pf) r t @ 10 ma ( ) v b @ 10 a (v) max max min typ x cdf7623-000 low 240-300 0.30 10 2 245 571-011 k cdf7621-000 low 270-350 0.10 20 2 680 571-011 ku cme7660-000 medium 350-450 0.15 10 3 C 571-011 k CDE7618-000 medium 375-500 0.10 20 3 C 571-011 ku cdp7624-000 medium/high 450-575 0.15 15 3 C 571-011 table 4. spice model parameters parameter units part number cdb7620-000 cdf7621-000 cdf7623-000 cdb7619-000 i s a 4e-08 9e-08 1.1e-07 3e-08 r s 4 6 5 30 n C 1.20 1.10 1.10 1.04 tt sec 1e-11 1e-11 1e-11 1e-11 c jo pf 0.15 0.11 0.20 0.11 m C 0.35 0.30 0.30 0.32 e g ev 0.69 0.69 0.69 0.69 xti C 2 2 2 2 f c C 0.5 0.5 0.5 0.5 b v v 2.0 2.5 2.5 3.0 i bv a 1e-05 1e-05 1e-05 1e-05 v j v 0.495 0.510 0.510 0.540 downloaded from: http:///
data sheet ? silicon schottky barrier diodes skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@sk yworksinc.com ? www.skyworksinc.com 4 june 3, 2019 ? skyworks prop rietary information ? products and product information are subj ect to change without notice ? 200847k typical i-v characteristics figure 1. cdf7621-000 figure 2. cdb7619-000 typical performance data figure 3. voltage output vs input power as a function of load resistance figure 4. voltage output vs input power as a function of load resistance and bias downloaded from: http:///
data sheet ? silicon schottky barrier diodes skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@ skyworksinc.com ? www.skyworksinc.com 200847k ? skyworks proprietary information ? products and product in formation are subject to cha nge without notice ? june 3, 2019 5 figure 5. typical video detector circuits downloaded from: http:///
data sheet ? silicon schottky barrier diodes skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@sk yworksinc.com ? www.skyworksinc.com 6 june 3, 2019 ? skyworks prop rietary information ? products and product information are subj ect to change without notice ? 200847k shipping information individual chips skyworks silicon schottky barrier diodes are provided in waffle packs for bare die and in gel-pack carriers for beamlead devices. dimensions are provided in figures 6, 7, and 8. figure 6. 491-006 package dimensions downloaded from: http:///
data sheet ? silicon schottky barrier diodes skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@ skyworksinc.com ? www.skyworksinc.com 200847k ? skyworks proprietary information ? products and product in formation are subject to cha nge without notice ? june 3, 2019 7 figure 7. 571-006 package dimensions figure 8. 571-011 package dimensions downloaded from: http:///
data sheet ? silicon schottky barrier diodes skyworks solutions, inc. ? phone [ 781] 376-3000 ? fax [781] 376-3100 ? sales@sk yworksinc.com ? www.skyworksinc.com 8 june 3, 2019 ? skyworks prop rietary information ? products and product information are subj ect to change without notice ? 200847k copyright ? 2002-2009, 2011-2014, 2019 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. skyworks 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 kind, 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 consequential 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 and the skyworks symbol are trademarks or registered trad emarks of skyworks solutions, in c. or its subsidiaries in the united states and other countri es. third-party brands and names are for identification purposes only, and ar e the property of their respective owners . additional information, including releva nt terms and conditions, posted at www.skyworksinc.com, are incorporated by reference. downloaded from: http:///
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