preliminary data this is preliminary information on a new product now in deve lopment or undergoing evaluation. details are subject to change without notice. october 2010 doc id 18122 rev 1 1/10 10 STEVAL-TDR025V1 portable uhf 2-way radio demonstration board based on the pd84001 features excellent thermal stability frequency: 380 - 520 mhz supply voltage: 7.2 v output power: 1 w power gain: 15.5 0.7 db efficiency: 58 % - 67 % load mismatch: 20:1 beo-free amplifier description the STEVAL-TDR025V1 demonstration board is a portable uhf 2-way radio designed as a platform for valuating the performance of the pd84001 ldmos rf power transistor. table 1. device summary order code mechanical specification STEVAL-TDR025V1 l = 60 mm, w = 30 mm www.st.com
contents STEVAL-TDR025V1 2/10 doc id 18122 rev 1 contents 1 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
STEVAL-TDR025V1 electrical characteristics doc id 18122 rev 1 3/10 1 electrical characteristics t a = + 25 c, v dd = 7.2 v, i dq = 100 ma table 2. electrical specifications symbol test conditions min. typ. max. unit freq frequency range 380 520 mhz p out 1w gain @ p in = 15 dbm 15.5 0.7 db nd @ p in = 15 dbm 58 - 67 % h2 2nd harmonic @ p in = 15 dbm tbd dbc h3 3rd harmonic @ p in = 15 dbm tbd dbc vswr load mismatch all phases @ p out = 1 w 20:1
impedance STEVAL-TDR025V1 4/10 doc id 18122 rev 1 2 impedance figure 1. impedance illustration table 3. impedance data f (mhz) z gs z dl 380 8.53 + j1.78 18.79 + j8.37 410 7.84 + j4.05 17.15 + j7.78 440 7.29 + j6.3 15.56 + j7.95 470 6.77 + j8.63 14.08 + j8.58 500 6.36 + j10.91 12.8 + j9.53 520 6.13 + j12.5 12.05 + j10.3 z dl z in g d s z gs
STEVAL-TDR025V1 typical performance doc id 18122 rev 1 5/10 3 typical performance figure 2. output power vs. frequency vdd = 7.2 v, idq = 100 ma figure 3. efficiency vs. frequency vdd = 7.2 v, idq = 100 ma figure 4. gain vs. frequency vdd = 7.2 v, idq = 100 ma figure 5. input return loss vs. frequency vdd = 7.2 v, idq = 100 ma 0.2 0.6 1 1.4 1.8 2.2 360 380 400 420 440 460 480 500 520 540 frequency (mhz) output power (w) pin=15dbm 20 30 40 50 60 70 80 90 100 360 380 400 420 440 460 480 500 520 540 frequency (mhz) efficiency (%) pin=15dbm 12 13 14 15 16 17 18 360 380 400 420 440 460 480 500 520 540 frequency (mhz) gain (db) pin=15dbm -6 -5 -4 -3 -2 -1 0 360 380 400 420 440 460 480 500 520 540 frequency (mhz) input return loss (db) pin=15dbm
typical performance STEVAL-TDR025V1 6/10 doc id 18122 rev 1 figure 6. output power vs. input power vdd = 7.2 v, idq = 100 ma figure 7. efficiency vs. output power vdd = 7.2 v, idq = 100 ma 20 22 24 26 28 30 32 34 36 2 4 6 8 10 12 14 16 18 20 22 input power (dbm) output power (dbm) 380 mhz 440 mhz 470 mhz 520 mhz 0 10 20 30 40 50 60 70 80 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 output pow er (w) efficiency (%) 380 mhz 440 mhz 470 mhz 520 mhz figure 8. output power vs. supply voltage pin = 15 dbm, idq = 100 ma 26 27 28 29 30 31 32 33 34 35 36 4567891011 supply voltage (v) output power (w) 380 mhz 440 mhz 470 mhz 520 mhz
STEVAL-TDR025V1 test circuit doc id 18122 rev 1 7/10 4 test circuit figure 9. test circuit schematic c1 0 c9 c8 c7 c6 c5 c4 c3 vc c 2 - 1 + l2 rfout l3 tl6 tl7 tl 4 tl3 tl2 tl 5 c2 c1 l1 r3 r2 b1 tl 1 rfin b2 r1 fr4 h= 2 0 m i l msub p d840 01 l ldmos pd84001 table 4. part list component id description value ca se size manufacturer part code b1 ferrite bead panasonic exceldrc35c b2 ferrite bead panasonic exceldrc35c c1, c2 capacitor 120 pf 0603 murata grm39-c0g121j50d500 c3 capacitor 1 f 0603 murata grm39-x5r105k16d52k c4, c5 capacitor 39 pf 0603 murata grm39-c0g390j50d500 c6 capacitor 1.2 pf 0603 murata grm39-c0g1r2c50z500 c7 capacitor 3.9 pf 0603 murata grm39-c0g3r9c50z500 c8 capacitor 12 pf 0603 murata grm39-c0g120j50d500 c9 capacitor 5.6 pf 0603 murata grm39-c0g5r6d50z500 c10 capacitor 3.3 pf 0603 murata grm39-c0g3r3c50z500 l1 inductor 12.55 nh coilcraft 1606-10 l2,l3 inductor 5.4 nh coilcraft 0906-4 r1 resistor 510 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=10.5 mm tl2 transmission line w=0.92 mm l=0.8 mm tl3 transmission line w=0.92 mm l=1.0 mm
test circuit STEVAL-TDR025V1 8/10 doc id 18122 rev 1 component id description value ca se size manufacturer part code tl4 transmission line w=0.92 mm l=4.5 mm tl5 transmission line w=0.92 mm l=3.6 mm tl6 transmission line w=0.92 mm l=1.5 mm tl7 transmission line w=0.92 mm l=10.0 mm rf in, rf out sma-conn 50 60 mils johnson 142-0701-801 pd84001 ldmos stmicroelectronics pd84001 board fr-4 thk=0.020" 2 oz cu both sides table 4. part list (continued) figure 10. demonstration board photo
STEVAL-TDR025V1 revision history doc id 18122 rev 1 9/10 5 revision history table 5. document revision history date revision changes 19-oct-2010 1 initial release
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