Temperature Compensated Crystal Oscillators(TCXO) Surface Mount Type TCXO(Analog Type) KT20A Series 5.0x3.2A Features How to Order * Miniature SMD Type (5.0x3.2x1.5mm) * Reflow compatible * AFC function available * 2.7V/2.8V/3.0V drive available * Frequency Stability : 2ppm at -30C to +80C * Phase Noise -140dBc/Hz @1kHz offset(max) Applications RoHS Conforming Pb Free KT20A - D C V 30 q u i qSeries tSupply Voltage wFrequency stability 28 K E D 5ppm 2.5ppm 2.0ppm eLower operating temp C -30C E -20C G -10C * GSM, CDMA - 19.680M - T w er t y 2.8V 30 3.0V yOption Code uFrequency(MHz) 19.200 19.680 26.000 19.440 19.800 iPackaging T Tape & Reel 4,000pcs/Reel rUpper operating temp V 80C T 70C R 60C Specifications Item Output Frequency Range Symbol FOUT f/fo Frequency Stability TSTG TOPR faging f/V VDD Vout IDD SYM ----- Storage Temp. Range Operating Temp. Range Aging Voltage control range Supply Voltage Output Voltage Current Consumption Duty Ratio Harmonics Dimensions (Unit : mm) Conditions Min. 19.2 -2.0 -0.2 -0.3 -30 -40 -1 +/-8 2.8 0.8 ---40 ---- vs Temperature vs Load vs Voltage Per Year Positive 10k ohm // 10pF @50% VDD Test Circuit Max. 26 +2.0 +0.2 +0.3 +80 +85 1 +/-15 3 ---1.5 60 -5 Units MHz ppm C C ppm ppm Volt Vp-p mA % dBc Recommended Land Pattern (Unit : mm) Test circuit 1 (Amplitude) 2.8 A Oscilloscope (100MHz) Vcc Vcon #3pin 10k 10% #1pin #2pin 1.4 1.4 CL=10pF 10% 1.6 V SUPPLY 4 3 VC-TCXO 1 2 1.1 POWER #4pin 1.1 CL include Probe Capacitance Test circuit 2 (Harmonics & Frequency) A Spectrum Analyzer & Counter POWER SUPPLY Vcc #1pin #2pin #3pin #4pin Pin Connection Vcon GND OUTPUT Vcc V FET PROBE 4 3 VC-TCXO 1 2 Vcon 10k 10% CL=10pF 10% CL include Probe Capacitance