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| NJU6379D PRELIMINARY 1.8V Operation 3rd. Over Tone Quartz Crystal Oscillator sGENERAL DESCRIPTION The NJU6379D is a C-MOS IC for 3rd. overtone quartz crystal oscillator that consists of an oscillation amplifier and 3-state output buffer, and can oscillate at 1.8V very low voltage. The NJU6379D has ability to oscillate from 60 to 70 MHz. The oscillation amplifier is realized very low stand-by current using NAND circuit. The 3-stage output buffer is C-MOS compatible. sPACKAGE OUTLINE NJU6379DC-D sFEATURES qOperating Voltage 1.8 to 2.8V qMaximum Oscillation Frequency 70MHz qLow Operating Current qHigh Fan-out IOH/IOL= 4mA @2.5V qOscillation Stop and Output Stand-by Function q3-State Output Buffer qOscillation Capacitors Cg and Cg on-chip qPackage Outline Thin-Chip qC-MOS Technology sLINE-UP TABLE Type No. NJU6379D Recommended Oscillation Frequency Range 60 to 70 MHz Output Frequency f0 Cg/Cd 8.5/9pF sPAD LOCATION Thin-Chip CONT XT XT VSS VDD FOUT sCOORDINATES No 1 2 3 4 5 8 Pad Name X -178 -178 -178 -178 206 206 Y 231 77 -77 -231 -231 231 CONT XT XT VSS FOUT VDD Starting Point:Chip Center Unit[um] Chip Size:0.7x0.75mm Thin-Chip Thickness:20020um Pad Size:90x90um sBLOCK DIAGRAM XT Rf VDD VSS XT Cg Cd 3 - STATE BUFFER FOUT CONT 2003/02/25 ( 1 / 4 ) NJU6379D sTREMINAL DESCRIPTION SYMBOL FUNCTION Oscillation and 3-state Output Buffer Control FOUT CONT H or OPEN Output Frequency f0 L Oscillation Stop and High impedance Output CONT Quartz Crystal Connecting Terminals XT VSS VSS=0V FOUT Frequency Output VDD VDD=2.5V Note1) Refer to the line-up table. XT sABSOLUTE MAXIMUM RATINGS (Ta=2 5C) PARAMETER SYMBOL RATING UNIT Supply Voltage VDD -0.5 to +7.0 V Input Voltage VIN VSS-0.5 to VDD+0.5 V Output Voltage VO -0.5 to VDD+0.5 V mA Input Current IIN 10 mA Output Current IO 25 Operating Temperature Range Topr -40 to +85 C Storage Temperature Range Tstg -55 to +125 C Note2) If the supply voltage(VDD) is less than 7.0V, the input voltage must not over the VDD level though 7.0V is limit specified. Note3) Decupling capacitor should be connected between VDD and VSS due to the stabilized operation for the circuit. 2003/02/25 ( 2 / 4 ) NJU6379D sELECTRICAL CHARACTERISTICS PARAMETER Operating Voltage SYMBOL VDD CONDITIONS MIN 1.8 TYP MAX 2.8 (Ta=25C) UNIT V PARAMETER Operating Current Oscillation Stopping Current Stand-by Current Input Voltage Output Current Input Current 3-state Off Leakage Current Feedback Resistance Internal Capacitor Maximum Oscillation Frequency Output Signal Symmetry Output Signal Rise Time Output Signal Fall Time Output Disable time Output Enable Time Note4) SYMBOL IDD ISTB Ist VIH VIL IOH IOL IIN IOZ Rf Cg/Cd FMAX SYM tr tf TPLZ TPZL CONDITIONS D version, fosc=70MHz,CL=15pF MIN TYP 2 (VDD=2.5V,Ta=25C) MAX UNIT 8 5 1 2.5 0.5 uA uA V V mA mA uA uA uA K pF MHz CONT =VSS, No load CONT =XT=VSS, No load Note4) 2 0 4 4 VOH=2.25V VOL=0.25V CONT =0.8VDD CONT =0.2VDD CONT =VSS, FOUT= VDD or VSS D version,XT=VDD D version,fOSC=70MHz D version CL=15pF, @VDD/2 CL=15pF,10%~90% CL=15pF,90%~10% CL=15pF,RUP=10k CL=15pF,RUP=10k 70 45 7.5 1.2 12.0 2.0 0.1 4.2 8.5/9 50 3 3 55 6 6 200 200 % ns ns ns ns Excluding input current on CONT Terminal. 2003/02/25 ( 3 / 4 ) NJU6379D sMEASURMENT CIRCUITS (1)Output Signal Symmetry(CL=15pF) 1000pF Pulse Generator 50 XT VDD FOUT CL=15pF VSS 1/2VDD H L (2)Output Signal Rise/Fall Time(CL=15pF) 1000pF Pulse Generator 50 XT VDD FOUT CL=15pF VSS tr tf 90% 50% 10% (3)Output Disable/Enable Time(CL=15pF,RUP=10k) XT VDD FOUT Pulse Generator 50 CONT VSS CL=15pF FOUT VOL RUP=10k CONT 0.2VDD TPLZ VOH 0.8VDD TPZL [CAUTION] The specifications on this data book are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this data book are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. 2003/02/25 ( 4 / 4 ) |
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