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december 2007 rev 2 1/15 15 DB-55008L-960 evaluation board using pd55 008l-e for uhf rfid reader features excellent thermal stability frequency: 860 - 960 mhz supply voltage: 12 v output power: 7 w efficiency: 46 % - 55 % load mismatch: 20:1 beo free amplifier description the DB-55008L-960 is an evaluation board using pd55008l-e ldmos transistor and designed for uhf portable rfid reader covering europe, usa/canada and japan frequency bands. for additional informations on pd55008l-e, please refer to its datasheet. table 1. device summary part number DB-55008L-960 mechanical specification: l = 60 mm, w = 30 mm www.st.com
contents DB-55008L-960 2/15 contents 1 electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 typical performances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5 circuit layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 mounting indications - pd55008l-e . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7 package mechanical data - pd55008l-e . . . . . . . . . . . . . . . . . . . . . . . . 11 8 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
DB-55008L-960 electrical data 3/15 1 electrical data 1.1 maximum ratings 2 electrical characteristics t a = +25 o c, v dd = 12 v, i dq = 100 ma table 2. absolute maximum ratings symbol parameter value unit v dd supply voltage 16 v i d drain current 1.6 a p diss drain current 10 w t case operating case temperature -20 to +85 c t a max. ambient temperature +55 c table 3. electrical specification symbol test conditions min typ max unit freq frequency range 860 960 mhz p out 7w gain @ p out = 7 w 9.5 db nd @ p out = 7 w 45 55 % gain flatness @ p out = 7 w 0.8 db h2 2 nd harmonic @ p out = 7 w -54 -50 dbc h3 3 rd harmonic @ p out = 7 w -44 -40 dbc vswr load mismatch all phases @p out = 7 w 20:1
impedance DB-55008L-960 4/15 3 impedance table 4. impedance data f(mhz) z gs z dl 840 2.20 + j0.2 2.95 + j2.4 860 2.05 + j0.8 2.95 + j2.7 880 1.87 + j1.4 2.93 + j2.9 900 1.70 + j2.0 2.86 + j3.1 920 1.54 + j2.6 2.73 + j3.15 940 1.40 + j3.2 2.50 + j3.2 960 1.26 + j3.7 2.14 + j3.3
DB-55008L-960 typical performances 5/15 4 typical performances figure 1. gain and efficiency vs frequency figure 2. gain and efficiency vs frequency figure 3. gain and efficiency vs frequency figure 4. gain and efficiency vs frequency 7w - 12v / 100m a 4 5 6 7 8 9 10 11 12 820 840 860 880 900 920 940 960 980 fr e q (m hz ) gain (db) 30 34 38 42 46 50 54 58 62 nd (%) ga in eff 4.5w - 9v / 100 m a 4 5 6 7 8 9 10 11 12 820 840 860 880 900 920 940 960 980 fr e q ( m hz ) gain (db) 30 34 38 42 46 50 54 58 62 nd (% ) ga in eff. 3.5w - 7.5v / 100 m a 4 5 6 7 8 9 10 11 12 820 840 860 880 900 920 940 960 980 freq (mhz) gain (db) 30 34 38 42 46 50 54 58 62 nd (%) gain eff. 2w - 5v / 100 m a 4 5 6 7 8 9 10 11 12 820 840 860 880 900 920 940 960 980 freq (mhz) gain (db) 30 34 38 42 46 50 54 58 62 nd (%) ga in eff.
typical performances DB-55008L-960 6/15 figure 5. input return loss vs frequency -20 -18 -15 -13 -10 -8 -5 -3 0 820 840 860 880 900 920 940 960 980 freq (mhz) input return loss (db) vdd = 12v idq = 100m a pout = 7w figure 6. output power vs input power figure 7. drain efficiency vs output power 12v - 100m a 0 1 2 3 4 5 6 7 8 9 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 pin (w) pout (w) 840 m hz 870 m hz 900 m hz 930 m hz 960 m hz 12v - 100m a 0% 10% 20% 30% 40% 50% 60% 0123456789 pout (w) nd (%) 840 m hz 870 m hz 900 m hz 930 m hz 960 m hz
DB-55008L-960 typical performances 7/15 figure 8. power gain vs output power figure 9. harmonics vs frequency 12v - 100m a 6 7 8 9 10 11 12 13 14 0123456789 pout (w) gain (db) 840 m hz 870 m hz 900 m hz 930 m hz 960 m hz 7w / 12v - 100m a -70 -60 -50 -40 -30 -20 -10 0 800 840 880 920 960 1000 frequency (mhz) harmonics level (dbc) h2 h3
circuit layout DB-55008L-960 8/15 5 circuit layout figure 10. circuit layout + tl7 tl6 tl5 tl4 c4 pd55008l ldmos r1 c11 c10 rfout l1 c2 vcc 2 - 1 + c5 c3 b2 d1 r2 tl2 rfin tl1 c6 c8 c7 c1 r3 tl3 b1 fr4 h=60 mil msub c9 table 5. component part list component id description value case size manufacturer part code b1 ferrite bead panasonic exceldrc35c b2 ferrite bead panasonic exceldrc35c c1, c2 capacitor 120 pf 1206 murata grm42-6 cog 121j 50_ c3 capacitor 1 nf 1206 murata grm42-6 cog 102j 50 c4 capacitor 10 nf 1206 murata grm42-6_x7r 103k 50_ c5 capacitor 10 uf smt panasonic eevhb1v100p c6, c11 capacitor 100 pf 100b atc atc 100b 101jw c7 capacitor 1,8 pf 100b atc atc 100b 1r8bw c8 capacitor 10 pf 100b atc atc 100b 100jw c9 capacitor 15 pf 100b atc atc 100b 150jw c10 capacitor 5,6 pf 100b atc atc 100b 5r6bw d1 zener diode 5.1 v sod110 philips bzx284c5v1 l1 inductor 35,5 nh coilcraft b09t r1 resistor 1 k ? 1206 tyco electronics 01623440-1 r2 potentiometer 10 k ? bourns electronics 3214w-1-103e r3 resistor 1 k ? 1206 bourns electronics 01623440-1 tl1 transmission line w=2.87 mm l= 7,4 mm tl2 transmission line w=2.87 mm l= 11,2 mm tl3 transmission line w=4.98 mm l= 4,15 mm
DB-55008L-960 circuit layout 9/15 figure 11. test circuit photomaster component id description value case size manufacturer part code tl4 transmission line w=4.98 mm l= 2,5 mm tl5 transmission line w=4.98 mm l= 2,0 mm tl6 transmission line w=2.87 mm l= 11,6 mm tl7 transmission line w=2.87 mm l=6,5 mm pd55008l-e ldmos stmicroelectronics pd55008l-e board fr-4 thk=0.060" 2oz cu both sides table 5. component part list (continued)
mounting indications - pd55008l-e DB-55008L-960 10/15 6 mounting indications - pd55008l-e figure 12. standard smd mounting
DB-55008L-960 package mechanical data - pd55008l-e 11/15 7 package mechanical data - pd55008l-e in order to meet environmental requirements, st offers these devices in ecopack? packages. these packages have a lead-free second level interconnect . the category of second level interconnect is marked on the package and on the inner box label, in compliance with jedec standard jesd97. the maximum ratings related to soldering conditions are also marked on the inner box label. ecopack is an st trademark. ecopack specifications are available at: www.st.com
package mechanical data - pd55008l-e DB-55008L-960 12/15 table 6. pd55008l-e powerflat? mechanical data dim. mm inch min typ max min typ max a 0.90 1.00 0.035 0.039 a1 0.02 0.05 0.001 0.002 a3 0.24 0.009 aa 0.15 0.25 0.35 0.006 0.01 0.014 b 0.43 0.51 0.58 0.017 0.020 0.023 c 0.64 0.71 0.79 0.025 0.028 0.031 d 5.00 0.197 d 0.30 0.011 e 5.00 0.197 e2 2.49 2.57 2.64 0.098 0.101 0.104 e 1.27 0.050 f 3.37 0.132 g 0.74 0.03 h 0.21 0.008 figure 13. powerflat? package dimensions
DB-55008L-960 package mechanical data - pd55008l-e 13/15 table 7. pd55008l-e powerflat? tape and reel dimensions dim. mm. inch min typ max min typ max ao 5.15 5.25 5.35 0.12 0.13 0.13 bo 5.15 5.25 5.35 0.12 0.13 0.13 ko 1.0 1.1 1.2 0.02 0.02 0.02 figure 14. powerflat? tape and reel
revision history DB-55008L-960 14/15 8 revision history table 8. document revision history date revision changes 12-dec-2006 1 initial release 18-dec-2007 2 updated: table 5 on page 8 , figure 10 , figure 11 on page 9 .
DB-55008L-960 15/15 please read carefully: information in this document is provided solely in connection with st products. stmicroelectronics nv and its subsidiaries (?st ?) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described he rein at any time, without notice. all st products are sold pursuant to st?s terms and conditions of sale. purchasers are solely responsible for the choice, selection and use of the st products and services described herein, and st as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a parti cular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. unless expressly approved in writing by an authorized st representative, st products are not recommended, authorized or warranted for use in milita ry, air craft, space, life saving, or life sustaining applications, nor in products or systems where failure or malfunction may result in personal injury, death, or severe property or environmental damage. st products which are not specified as "automotive grade" may only be used in automotive applications at user?s own risk. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or registered trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2007 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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