alpha industries, inc. [781] 935-5150 ? fax [978] 241-7906 ? email sales@alphaind.com ? www.alphaind.com 1 specifications subject to change without notice. 8/01a phemt gaas ic high power sp3t switch dc?2 ghz features positive low voltage control (0/2.75 v operation) low insertion loss (< 0.6 db @ 2 ghz) high isolation (30 db at 1 and 2 ghz) excellent harmonics performance (65 dbc @ 2.75 v 1 ghz p in = 34 dbm) miniature mlp-12 plastic package phemt process mlp-12 AS202-321 0.008 (0.20 mm) seating plane 0.118 (3.00 mm) pin 1 indicator pin 1 indicator 0.118 (3.00 mm) 0.001 (0.02 mm) 0.030 (0.75 mm) 0.002 (0.05 mm) exposed pad 0.029 (0.73 mm) 0.0196 (0.50 mm) bsc 0.057 (1.45 mm) sq. + 0.004 (0.10 mm) - 0.006 (0.15 mm) 0.009 (0.23 mm) + 0.003 (0.07 mm) - 0.002 (0.05 mm) description the AS202-321 is a phemt gaas ic sp3t antenna switch operating in the 900 mhz and 1800 mhz frequency bands. switching between the antenna and t x /r x ports is accomplished with 3 control inputs. when the control inputs are driven with the appropriate voltages, a low insertion loss path is provided from an antenna port to an r x or t x port, while the other ports have high attenuation. parameter frequency min. typ. max. unit insertion loss ant-rf1, rf2, rf3 0.1?0.5 ghz 0.55 0.75 db 0.5?1.0 ghz 0.60 0.80 db 1.0?2.0 ghz 0.80 1.10 db isolation ant-rf1, rf2, rf3 0.1?0.5 ghz 25 28 db 0.5?1.0 ghz 22 25 db 1.0?2.0 ghz 22 25 db return loss ant-rf1, rf2, rf3 0.1?0.5 ghz 18 db 0.5?1.0 ghz 18 db 1.0?2.0 ghz 14 db electrical specifications at 25c (0, +2.75 v) preliminary parameter condition frequency min. typ. max. unit 2nd harmonic 34 dbm in @ 2.75 v 1 ghz 72 dbc 3rd harmonic 34 dbm in @ 2.75 v 1 ghz 65 dbc 2nd harmonic 32 dbm in @ 2.75 v 2 ghz 70 dbc 3rd harmonic 32 dbm in @ 2.75 v 2 ghz 65 dbc gate leakage current 34 dbm in @ 2.75 v 0.030 ma control voltages v high -0.25 0 0.25 v v low 2.60 2.75 5.00 v operating characteristics at 25c (0, +2.75 v)
phemt gaas ic high power sp3t switch dc?2 ghz AS202-321 2 alpha industries, inc. [781] 935-5150 ? fax [978] 241-7906 ? email sales@alphaind.com ? www.alphaind.com specifications subject to change without notice. 8/01a v 1 rf 1 gnd v 2 rf 2 gnd ant gnd n/c v 3 rf 3 gnd c bl c bl c bl c bl pin out typical performance data (0, +2.75 v, c bl = 47 pf) insertion loss vs. frequency frequency (ghz) insertion loss (db) -2.0 -1.6 -1.2 -0.8 -0.4 0 0.4 0.8 1.2 1.6 2.0 0 0.5 1.0 1.5 2.0 2.5 3.0 ant-rf1 ant-rf2 ant-rf3 isolation vs. frequency frequency (ghz) isolation (db) -50 -45 -40 -35 -30 -25 -20 -15 -10 -5 0 0 0.5 1.0 1.5 2.0 2.5 3.0 ant-rf1 ant-rf2 ant-rf3 return loss vs. frequency frequency (ghz) return loss (db) -25 -20 -15 -10 -5 0 0 0.5 1.0 1.5 2.0 2.5 3.0 ant-rf1 ant-rf2 ant-rf3 2nd and 3rd harmonics vs. control voltage 0 10 20 30 40 50 60 70 80 90 2.0 2.5 3.0 3.5 4.0 4.5 control voltage (v) 2nd and 3rd harmonics (dbc) 2nd harmonic 3rd harmonic v 1 v 2 v 3 ant-rf1 ant-rf2 ant-rf3 v high v low v low ins. loss isolation isolation v low v high v low isolation ins. loss isolation v low v low v high isolation isolation ins. loss truth table v low = 0?0.2 v. v high = 2.75?5 v. dc blocks required. c bl = 47 pf for operation >500 mhz.
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