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october 2010 doc id 18108 rev 1 1/11 11 STEVAL-TDR020V1 portable uhf 2-way radio demonstration board based on the pd84006l-e features excellent thermal stability frequency: 740 - 950 mhz supply voltage: 7.2 v output power: 4 w power gain: 12.3 0.3 db efficiency: 50 % - 57 % load mismatch 20:1 beo free amplifier description the STEVAL-TDR020V1 demonstration board is a portable uhf 2-way radio designed as a platform for evaluating the performance of the pd84008l-e ldmos rf power transistor. table 1. device summary order code STEVAL-TDR020V1 mechanical specification: l = 60 mm, w = 30 mm www.st.com
contents STEVAL-TDR020V1 2/11 doc id 18108 rev 1 contents 1 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 circuit photo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
STEVAL-TDR020V1 electrical characteristics doc id 18108 rev 1 3/11 1 electrical characteristics t a = +25 o c, v dd = 7.2 v, i dq = 200 ma table 2. electrical specification symbol test conditions min typ max unit freq frequency range 740 950 mhz p out 4w gain @ p in = 24 dbm 12.3 0.3 db nd @ p in = 24 dbm 50 - 57 % h2 2 nd harmonic @ p in = 24 dbm -48 / -65 dbc h3 3 rd harmonic @ p in = 24 dbm -64 / -70 dbc vswr load mismatch all phases @ p out = 4 w 20:1
impedance STEVAL-TDR020V1 4/11 doc id 18108 rev 1 2 impedance figure 1. impedance graphic table 3. impedance data f(mhz) z gs z dl 740 2,52 + j1,42 3,06 + j0,41 750 2,52 + j1,56 3,09 + j0,51 760 2,51 + j1,73 3,12 + j0,64 770 2,46 + j1,84 3,13 + j0,72 780 2,47 + j1,96 3,13 + j0,81 790 2,48 + j2,07 3,13 + j0,87 800 2,45 + j2,22 3,14 + j0,96 810 2,44 + j2,27 3,08 + j1,02 820 2,45 + 2,43 3,05 + j1,04 830 2,41 + j2,57 3,04 + j1,11 840 2,40 + j2,67 2,98 + j1,14 850 2,41 + j2,80 2,99 + j1,24 860 2,38 + j2,92 2,91 + j1,29 870 2,37 + j3,06 2,88 + j1,38 880 2,36 + j3,20 2,81 + j1,40 890 2,37 + j3,25 2,70 + j1,47 900 2,31 + j3,36 2,56 + j1,53 910 2,25 + j3,49 2,50 + j1,62 920 2,16 + j3,57 2,31 + j1,72 930 2,16 + j3,66 2,21 + j1,82 940 2,11 + j3,78 2,11 + j1,96 950 2,06 + j3,86 1,98 + j2,07 z dl z in g d s z gs
STEVAL-TDR020V1 typical performance doc id 18108 rev 1 5/11 3 typical performance figure 2. output power and efficiency vs frequency vdd = 7.2 v, idq = 200 ma, pin = 24 dbm figure 3. gain vs output power vdd = 7.2 v, idq = 200 ma figure 4. input return loss vs frequency vdd = 7. 2 v, idq = 200 ma figure 5. harmonics vs frequency vdd = 7.2 v, idq = 200 ma, pin = 24 dbm )uhtxhqf\0+] 2xwsxw3rzhu: (iilflhqf\ 3rxw (iilflhqf\ 2xwsxw3rzhu: *dlqg% 0+] 0+] 0+] )uhtxhqf\0+] ,5/g% 3lq g%p )uhtxhqf\0+] +duprqlfvg% + +
typical performance STEVAL-TDR020V1 6/11 doc id 18108 rev 1 figure 6. output power vs fr equency and supply voltage pin = 24 dbm, idq = 200 ma )uhtxhqf\0+] 2xwsxw3rzhu: 9ff 9 9ff 9 9ff 9 9ff 9
STEVAL-TDR020V1 test circuit doc id 18108 rev 1 7/11 4 test circuit figure 7. test circuit schematic + p d 84006l ldmos r2 fr4 h= 20 m il msub c12 c11 c10 l1 b2 c2 rfout tl6 vc c 2 - 1 + c3 c4 c5 c13 tl5 tl4 c7 rfin c6 c8 tl2 tl1 tl3 r3 r1 c9 b1 c1
test circuit STEVAL-TDR020V1 8/11 doc id 18108 rev 1 table 4. component list component id description value case size manufacturer part code b1, b2 ferrite bead panasonic exceldrc35c c1, c2 capacitor 150 pf 0603 murata grm39- c0g151j50d500 c3 capacitor 1 nf 0603 murata grm39- cog102j50d500 c4 capacitor 10 nf 0603 murata grm39- x7r103k50c560_ c5 capacitor 10 uf smt panasonic eevhb1v100p c6, c13 capacitor 39 pf 0603 murata grm39- c0g390j50d500 c7 capacitor 3,3 pf 0603 murata gqm1885c2a3r3c c8 capacitor 8,2 pf 0603 murata gqm1885c1h8r2d c9 capacitor 18 pf 0603 murata gqm1885c1h180j c10 capacitor 15 pf 0603 murata gqm1885c1h150j c11 capacitor 12 pf 0603 murata gqm1885c1h120j c12 capacitor 4,7 pf 0603 murata gqm1885c2a4r7 l1 inductor 12.55 nh coilcraft 1606-10 r1 resistor 56 ? 0603 tyco electronics r2 potentiometer 10 k ? bourns electronics 3214w-1-103e r3 resistor 1 k 0603 tyco electronics 01623440-1 tl1 transmission line w=0.92 mm l= 13,50 mm tl2 transmission line w=0.92 mm l= 3,15 mm tl3 transmission line w=0.92 mm l= 2,90 mm tl4 transmission line w=0.92 mm l= 2,00 mm tl5 transmission line w=0.92 mm l= 2,20 mm tl6 transmission line w=0.92 mm l= 13,20 mm rf in, rf out sma-conn 50 ? 60 mils johnson 142-0701-801 pd84006l-e ldmos stmicroelectronics pd84006l-e board fr-4 thk=0.020" 2oz cu both sides
STEVAL-TDR020V1 circuit photo doc id 18108 rev 1 9/11 5 circuit photo figure 8. circuit photo
revision history STEVAL-TDR020V1 10/11 doc id 18108 rev 1 6 revision history table 5. document revision history date revision changes 18-oct-2010 1 initial release.
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