phone [408] 946-1968 ? fax [408] 946-1960 ? hirel. sales@skyworksinc.com ? www.skyworksinc.com 203258c ? isolink proprietary information ? products and pro duct information are subject to ch ange without notice. ? apr il 18, 2017 1 data sheet silicon schottky barrier diodes in hermetic and epoxy ceramic packages applications ? detectors ? mixers features ? available in both p-type and n-type low barrier designs ? low 1/f noise ? packages rated msl1, 260 ? c per jedec j-std-020 description our packaged schottky barrier detector diodes are designed for applications through 20 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. packaged diodes are suitable for use in waveguide, coaxial, and stripline applications. 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 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). 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 i-v characteristics are shown in figures 1 and 2. typical performance characteristics are shown in figures 3 and 4. typical video detector circuits are shown in figure 5. downloaded from: http:///
silicon schottky barrier diodes phone [408] 946-1968 ? fax [408] 946-1960 ? hirel. sales@skyworksinc.com ? www.skyworksinc.com 203258c ? isolink proprietary information ? products and pro duct information are subject to ch ange without notice. ? apr il 18, 2017 2 table 1. electrical specifications: beam-lead p-type detector schottky diodes (note 1) frequency band part number tss (dbm) (note 2) r v ( ? ) total capacitance (ct) @ 0 v (pf) v f @ 1.0 ma (mv) v b @ 10 ua (v) typical minimum maximum maximum minimum maximum minimum x ddb2503-220 50 500 700 0.3 200 350 2 x ddb2503-230 50 500 700 0.3 200 350 2 x ddb2503-250 50 500 700 0.3 200 350 2 ku ddb2504-220 48 500 700 0.2 200 350 2 ku ddb2504-230 48 500 700 0.2 200 350 2 ku ddb2504-250 48 500 700 0.2 200 350 2 k ddb2265-220 50 (note3) 800 (note 3) 1200 (note 3) 0.2 300 450 3 k ddb2265-230 50 (note3) 800 (note 3) 1200 (note 3) 0.2 300 450 3 k ddb2265-250 50 (note3) 800 (note 3) 1200 (note 3) 0.2 300 450 3 note 1: performance is guaranteed only under the conditions listed in this table. note 2: bias = 50 a video bandwidth = 10 mhz. note 3: bias = 30 a table 2. electrical specifications: p-type detector schottky diodes (note 1) frequency band part number barrier r v ( ) tss (dbm) (note 2) total capacitance (c t ) @ 0 v (pf) v f @ 1 ma (mv) total resistance (r t ) @ 10 ma ( ) (note 3) v b @ 10 a (v) typical typical maximum minimum maximum maximum minimum ku cdb7620-203 low 537 +40 0.4 250 350 30 2 ku cdb7620-207 low 537 +40 0.4 250 350 30 2 k cdb7619-203 low 735 +50 (note 4) 0.35 275 375 40 3 k cdb7619-207 low 735 +50 (note 4) 0.35 275 375 40 3 note 1: performance is guaranteed only under th e conditions listed in this table. note 2: bias = 50 a video bandwidth = 10 mhz rv = 2800 ? note 3: r t is the slope resistance @ 10 ma. the maximum series resistance (r s ) is calculated as : r s = r t C 2.8 note 4: bias = 30 a downloaded from: http:///
data sheet ? silicon schottky barrier diodes phone [408] 946-1968 ? fax [408] 946-1960 ? hirel. sales@skyworksinc.com ? www.skyworksinc.com 203258c ? isolink proprietary information ? products and pro duct information are subject to ch ange without notice. ? apr il 18, 2017 3 table 3. electrical specifications: n-type detector schottky diodes (note 1) frequency band part number barrier v f @ 1.0 ma (mv) r v ( ? ) total capacitance (ct) @ 0 v (pf) total resistance (rt) @ 10 ma ( ? ) (note 2) v b @ 10 ua (v) minimum maximum typical maximum maximum minimum x CDF7623-203 low 240 300 245 0.50 10 2 x cdf7623-207 low 240 300 245 0.50 10 2 k cdf7621-203 low 270 350 680 0.30 20 2 k cdf7621-207 low 270 350 680 0.30 20 2 ku cme7660-203 medium 350 450 - 0.40 10 3 ku cme7660-207 medium 350 450 - 0.40 10 3 k cde7618-203 medium 375 500 - 0.30 20 3 k cde7618-207 medium 375 500 - 0.30 20 3 ku cdp7624-203 medium/high 450 575 - 0.40 15 3 ku cdp7624-207 medium/high 450 575 - 0.40 15 3 note 1: performance is guaranteed only under th e conditions listed in this table. note 2: r t is the slope resistance @ 10 ma. the maximum series resistance (r s ) is calculated as : r s = r t C 2.8 table 4. spice model parameters parameter units part number cdb7620 cdf7621 cdc7623 cdb7619 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 10 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 phone [408] 946-1968 ? fax [408] 946-1960 ? hirel. sales@skyworksinc.com ? www.skyworksinc.com 203258c ? isolink proprietary information ? products and pro duct information are subject to ch ange without notice. ? apr il 18, 2017 4 typical i-v characteristics 0 0.1 0.2 0.3 0.4 0.5 0. 6 0.7 0.8 0. 9 1.0 forward voltage (v) 10 C1 10 C2 10 C3 10 C4 10 C5 forward c urrent (a) 10 C 6 figure 1. cdf7621 0 0.1 0.2 0.3 0.4 0.5 0. 6 0.7 0.8 0. 9 1.0 forward voltage (v) forward c urrent (a) 10 C1 10 C2 10 C3 10 C4 10 C5 10 C 6 figure 2. cdb7619 typical performance characteristics 0.10 C30 C20 C10 0 +10 +20 1.00 10.00 100.00 1000.00 10000.00 r l = 100 k te s t c ondition s : f = 9 .375 g hz d c bia s = 0 input power (dbm) voltage output (mv) r l = 1 m r l = 10 k r l = 1 k r l = 100 r l = 10 r l = 1 figure 3. voltage output vs input power as a function of load resistance 0.10 C30 C20 C10 0 +10 +20 1.00 10.00 100.00 1000.00 10000.00 input power (dbm) voltage output (mv) r l = 1 k 50 a 5 a 5 a r l = 1 m r l = 10 te s t c ondition s : f = 9 .375 g hz 50 a 5 a figure 4. voltage output vs input power as a function of load resistance and bias downloaded from: http:///
data sheet ? silicon schottky barrier diodes phone [408] 946-1968 ? fax [408] 946-1960 ? hirel. sales@skyworksinc.com ? www.skyworksinc.com 203258c ? isolink proprietary information ? products and pro duct information are subject to ch ange without notice. ? apr il 18, 2017 5 load re s i s tor d c return rf bypa ss unbia s ed load re s i s tor d c return rf bypa ss bia s ed bia s s upply multi-octaveChigh s en s itivity load re s i s tor rf bypa ss unbia s ed load re s i s tor rf bypa ss bia s ed bia s s upply video output video output input video output input video output inputinput broadbandClow s en s itivity 50 figure 5. typical video detector circuits downloaded from: http:///
data sheet ? silicon schottky barrier diodes phone [408] 946-1968 ? fax [408] 946-1960 ? hirel. sales@skyworksinc.com ? www.skyworksinc.com 203258c ? isolink proprietary information ? products and pro duct information are subject to ch ange without notice. ? apr il 18, 2017 6 package dimensions package dimensions are provided in figures 6 through 10. 0.050 (1.27 mm)0.040 (1.02 mm) 0.055 (1.40 mm)0.051 (1.30 mm) dia. s chematic n-type s15 69 12 12 figure 6. -203 package dimensions s chematic n-type 0.07 6 (2.10 mm) 0.00 6 (1.78 mm) 0.200 (5.08 mm) nom. 0.08 6 (2.18 mm) max. dia. 0.0 6 4 (1. 6 3 mm) 0.0 6 0 (1.52 mm) dia. 2 plc s . 0.0 6 2 (1. 6 3 mm) 0.002 (1.52 mm) 2 plc s metal c eramic metal s chematic p-type figure 7. -207 package dimensions downloaded from: http:///
data sheet ? silicon schottky barrier diodes phone [408] 946-1968 ? fax [408] 946-1960 ? hirel. sales@skyworksinc.com ? www.skyworksinc.com 203258c ? isolink proprietary information ? products and pro duct information are subject to ch ange without notice. ? apr il 18, 2017 7 y11 6 3 figure 8. -220 package dimensions s chematic 2 2 1 c olored dot denote s c athode 0.051 (1.30 mm)0.055 (1.40 mm) 0.0 9 0 (2.2 9 mm) min. 2 plc s . 0.013 (0.33 mm)0.017 (0.43 mm) 2 plc s . 0.003 (0.08 mm)0.005 (0.13 mm) 0.008 (0.20 mm)0.012 (0.30 mm) epoxy encap s ulation au-plated lead s c eramic ba s e 0.030 (0.7 6 mm) max. 1 50 deg.40 deg. figure 9. -230 package dimensions downloaded from: http:///
data sheet ? silicon schottky barrier diodes phone [408] 946-1968 ? fax [408] 946-1960 ? hirel. sales@skyworksinc.com ? www.skyworksinc.com 203258c ? isolink proprietary information ? products and pro duct information are subject to ch ange without notice. ? apr il 18, 2017 8 2 1 2 1 50 deg.40 deg. s chematic c olored dot denote s c athode epoxy encap s ulation au-plated lead s 0.018 (0.45 mm)0.122 (0.55 mm) 2 plc s . 0.018 (0.45 mm)0.122 (0.55 mm) 0.0 9 0 (2.28 mm) 0.110 (2.7 9 mm) 2 plc s . 0.100 (2.54 mm) dia. 0.050 (1.27 mm) max. 0.003 (0.08 mm)0.005 (0.13 mm) figure 10. -250 package dimensions downloaded from: http:///
data sheet ? silicon schottky barrier diodes phone [408] 946-1968 ? fax [408] 946-1960 ? hirel. sales@skyworksinc.com ? www.skyworksinc.com 203258c ? isolink proprietary information ? products and pro duct information are subject to ch ange without notice. ? apr il 18, 2017 9 copyright ? 2014-2015, 2017 isolink, inc. all rights reserved. information in this document is provided in connection with isolink, inc. (isolink), a wholly-owned subsid iary of skyworks so lutions, inc. these materials, including the information contained herein, are provided by isolink as a service to its customers and may be used for informational purposes only by the customer. isolink assumes no responsibility fo r errors or omissions in these materials or the information contained herein. isolink may change its documentation, products, se rvices, specifications or prod uct descriptions at any time, wi thout notice. isolink 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 es toppel or otherwise, is granted to any in tellectual property rights by this document . isolink assumes no liability for any materials, products or information provided hereunder, including the sale, distribution, reproduction or use of isolink products, in formation or materials, except as may be provided in isolink 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. isolink does not warrant the accuracy or completeness of the information, text, graphics or other items contained w ithin these materials. isolink shall not be liable for any damages, including but not limited to any special, indirect, incidental, statutory, or consequential dama ges, including without limitation, lost revenues or lost profits that may result from the use of the materials or informati on, whether or not the recipient of material s has been advised of the possibility of such damage. customers are responsible for their products and applications using isolink products, which ma y deviate from published specific ations as a result of design defects, errors, or operation of products outside of published parameters or design sp ecifications. customers shou ld include design and operating safeguards to minimize these and other risks. isolink assumes no liability for applications assistance, customer product design, or dama ge to any equipment resulting from the use of isolink products outside of stated pu blished specifications or parameters. isolink is a trademark of isolink inc. in the united states and other countries. skywor ks and the skyworks symbol are trademark s or registered trademarks of skywor ks solutions, inc., in the united states and other countries. third-party bra nds and names are for identification purpose s only, and are the property of their re spective owners. downloaded from: http:///
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