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october 2010 doc id 18112 rev 1 1/11 11 STEVAL-TDR014V1 demonstration board ba sed on the pd55008-e for uhf mobile radio features excellent thermal stability frequency: 400 - 500 mhz supply voltage: 12.5 v output power: 8 w efficiency: 48 % - 54 % load mismatch: 20:1 beo-free amplifier description the STEVAL-TDR014V1 is a demonstration board using the pd55008-e common source n- channel enhancement-mode lateral field effect rf power amplifier. it is designed as a driver for uhf mobile radio applications. table 1. device summary order code mechanical specification STEVAL-TDR014V1 l = 60 mm, w = 30 mm www.st.com
contents STEVAL-TDR014V1 2/11 doc id 18112 rev 1 contents 1 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 circuit layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
STEVAL-TDR014V1 electrical characteristics doc id 18112 rev 1 3/11 1 electrical characteristics t a = +25 c, v dd = 12.5 v, i dq = 100 ma table 2. electrical specification symbol test conditions min. typ. max. unit freq frequency range 400 500 mhz p out 810 w gain @ p out = 8 w 13.9 0.7db db nd @ p out = 8 w 48 54 % h2 2 nd harmonic @ p out = 8 w -53 -50 dbc h3 3 rd harmonic @ p out = 8 w -60 -55 dbc vswr load mismatch all phases @ p out = 8 w 20:1
typical performance STEVAL-TDR014V1 4/11 doc id 18112 rev 1 2 typical performance figure 1. output power vs. input power figure 2. gain vs. output power figure 3. drain efficiency vs. output power figure 4. gain vs. frequency 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 00 0001111111 input power (w) output power (w) 380 400 420 440 460 480 500 12.5 100 vdd= ma v idq= 6 7 8 9 10 11 12 13 14 15 16 17 18 0 2 4 6 8 10 12 14 pout (w) gain (db) 380 400 420 440 460 480 500 12.5 100 vdd= ma v idq= 10 15 20 25 30 35 40 45 50 55 60 65 70 02468101214 pout (w) eff (%) 380 400 420 440 460 480 500 12.5 100 v dd= ma v id q = 4 6 8 10 12 14 16 18 360 380 400 420 440 460 480 500 520 540 freq (mhz) gain (db) pout = 8w
STEVAL-TDR014V1 typical performance doc id 18112 rev 1 5/11 figure 7. harmonics vs. frequency figure 5. efficiency vs. frequency figure 6. input return loss vs. frequency 20 25 30 35 40 45 50 55 60 65 70 75 80 360 380 400 420 440 460 480 500 520 540 freq (mhz) eff. (%) -18 -16 -14 -12 -10 -8 -6 -4 -2 0 360 380 400 420 440 460 480 500 520 540 560 580 freq (mhz) rtl (db) -75 -70 -65 -60 -55 -50 -45 -40 360 380 400 420 440 460 480 500 520 540 freq (mhz) harmonics (dbc) h2 h3 p out = 8 w vdd = 12.5 v idq = 100 ma -75 -70 -65 -60 -55 -50 -45 -40 360 380 400 420 440 460 480 500 520 540 freq (mhz) harmonics (dbc) h2 h3 p out = 8 w vdd = 12.5 v idq = 100 ma
typical performance STEVAL-TDR014V1 6/11 doc id 18112 rev 1 figure 8. output power vs. drain supply voltage 0 4 8 12 16 20 24 4 6 8 101214161820 vdd (v) pout (w) 380 400 420 440 460 480 500 520 pin = 30 dbm 0 4 8 12 16 20 24 4 6 8 101214161820 vdd (v) pout (w) 380 400 420 440 460 480 500 520 pin = 30 dbm
STEVAL-TDR014V1 test circuit doc id 18112 rev 1 7/11 3 test circuit figure 9. test circuit schematic -e
circuit layout STEVAL-TDR014V1 8/11 doc id 18112 rev 1 4 circuit layout figure 10. circuit layout pd55008-e
STEVAL-TDR014V1 circuit layout doc id 18112 rev 1 9/11 table 3. components part list for STEVAL-TDR014V1 part type component id description value case size manufacturer part code cap c1 capacitor 120 pf 1206 murata grm42-6c0g121j50 cap c2 capacitor 120 pf 1206 murata grm42-6c0g121j50 cap c3 capacitor 1 nf 1206 murata grm42-6c0g102j50 cap c4 capacitor 10 nf 1206 murata grm42-6x7r104k50 electrolytic cap c5 capacitor 10 f smt panasonic eevhb1v100p cap c6 capacitor 330 pf 100b atc 331 cap c7 capacitor 330pf 100b atc 331 cap c8 capacitor 12 pf 100b atc 120 cap c9 capacitor 39 pf 100b atc 390 cap c10 capacitor 43 pf 100b atc 430 cap c11 capacitor 12 pf 100b atc 120 tl tl1, tl7 transmission line w = 2.87 mm l = 7 mm tl tl2 transmission line w = 4.9 mm l = 5 mm tl tl3, tl4 transmission line w = 6 mm l = 3 mm tl tl5 transmission line w = 4.9 mm l = 2.5 mm tl tl6 transmission line w = 4.9 mm l = 2.5 mm ferrite bead b1 ferrite bead panasonic exceldrc35c ferrite bead b2 ferrite bead panasonic exceldrc35c inductor l1 inductor 35.5nh coilcraft mini spring b09tj inductor l2 inductor 3.85 nh coilcraft micro spring 0906-4j inductor l3 inductor 8 nh coilcraft mini spring a03tj transistor pd55008-e ldmos stmicroelectronics pd55008-e resistor r1 resistor 15 ohms 1206 tyco electronics 01623440-1 pot r2 potentiometer 10 k bourns electronics 3214w-1-103e resistor r3 resistor 1k 1206 tyco electronics 01623440-1 sma-conn rf in sma-conn johnson 142-0701-801 sma-conn rf out sma-conn johnson 142-0701-801 zener d1 zener diode 5.1 v sod110 philips bzx284c5v1 board fr-4 thk=0.060 2oz cu both sides
revision history STEVAL-TDR014V1 10/11 doc id 18112 rev 1 5 revision history table 4. document revision history date revision changes 18-oct-2010 1 initial release.
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