temperature compensated crystal oscillators(tcxo) surface mount type tcxo(analog type) kt20a series dimensions test circuit recommended land pattern (unit : mm) (unit : mm) features ?miniature smd type (5.0x3.2x1.5mm) ?reflow compatible ?afc function available ?2.7v/2.8v/3.0v drive available ?frequency stability : 2ppm at -30 c to +80 c ?phase noise -140dbc/hz @1khz offset(max) how to order applications ?gsm, cdma specifications kt20a - d c v 30 - 19.680m - t w qertyui q series t supply voltage w frequency stability y option code u frequency(mhz) k 5ppm e 2.5ppm d 2.0ppm e lower operating temp c ? 30 c e ? 20 c g ? 10 c r upper operating temp v 80 c t 70 c r 60 c 28 2.8v 30 3.0v 19.200 19.680 26.000 19.440 19.800 i packaging t tape & reel 4,000pcs/reel item symbol conditions min. max. units output frequency range frequency stability storage temp. range operating temp. range aging voltage control range supply voltage output voltage current consumption duty ratio harmonics f out 19.2 26 mhz vs temperature ? 2.0 + 2.0 ? f/ fo vs load ? 0.2 + 0.2 ppm vs voltage ? 0.3 + 0.3 t stg ? 30 + 80 c t opr ? 40 + 85 c ? faging per year ? 1 1 ppm ? f/v positive +/? 8 +/? 15 ppm v dd 2.8 3 volt vout 10k ohm // 10pf 0.8 ---- vp-p i dd ---- 1.5 ma sym @50% v dd 40 60 % ----- ---- ? 5 dbc 1.1 1.1 #4pin #3pin #1pin #2pin 1.4 1.4 2.8 1.6 test circuit 2 (harmonics & frequency) test circuit 1 (amplitude) oscilloscope (100mhz) cl include probe capacitance power supply vcc a v 12 43 vc-tcxo 10k ? 10% vcon cl=10pf 10% spectrum analyzer & counter fet probe cl include probe capacitance power supply vcc a v 12 43 vc-tcxo 10k ? 10% vcon cl=10pf 10% pin connection #1pin vcon #2pin gnd #3pin output #4pin vcc pb free rohs conforming 5.0 3.2 a
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