2011/02/24 ( 1 / 7 ) NJU6398 lvds-output quartz crystal oscillator ic ! general description ! package outline the NJU6398 is a quartz crystal oscillator ic with lvds output, from 110mhz to 160mhz frequency output, which consists of an oscillation amplifier, lvds output, and 3-state output buffer for each lvds. the oscillation amplifier realizes very low oscillation stop current with nand circuit. the NJU6398 is suitable for mobile, optical communications (including wdm system), pc & peripherals, telecommunications, lan/wan, and wireless systems ! features ! pad location " operating voltage 2.7 to 3.6v " oscillation frequency 110mhz to 160mhz " output level lvds " oscillation stop and output stand-by function " 3-state output buffer " oscillation capacitors cg and cd on-die " package outline thin-die " c-mos technology ! coordinates starting point:die center unit[um] die size:1.55x1.70mm die thickness(-d):200 20um pad size:90x90um note1) substrate: v ss level ! block diagram no pad name x y 1 cont -578.2 688 2 xt -578.2 405 3 xt -578.2 -535.7 4v ss -578.2 -689.7 5f outa 609 -476.7 6f outb 609 105.6 7v dd 609 706 NJU6398c-d thin-chip cont xt v ss f outa xt v dd f outb rf c cd xt xt cont v dd v ss f outa f outb
2011/02/24 ( 2 / 7 ) NJU6398 ! terminal description symbol function cont oscillation and 3-state output buffer control cont f out h or open output frequency f 0 l oscillation stop and high impedance output xt xt quartz crystal connecting terminals v ss v ss =0v f outa f outb lvds output, differential output pair v dd v dd =3.3v ! absolute maximum ratings (ta=25 c) parameter symbol rating unit supply voltage v dd -0.5 to +7.0 v input voltage v in v ss -0.5 to v dd +0.5 v output voltage v o -0.5 to v dd +0.5 v input current i in 10 ma output current i o 25 ma operating temperature range topr -40 to +85 c storage temperature range tstg -55 to +125 c note2) if the supply voltage(v dd ) is less than 7.0v, the input voltage do not over the v dd level. note3) decupling capacitor should be connected between v dd and v ss due to the stabilized operation for the circuit.
2011/02/24 ( 3 / 7 ) NJU6398 ! electrical characteristics (ta=25 c) parameter symbol conditions min typ max unit operating voltage v dd 2.7 3.6 v (v dd =3.3v,ta=25 c) parameter symbol conditions min typ max unit cir- cuit operating current i dd1 fosc=155mhz,c l =5pf 27 40 ma 1 oscillation stopping current i dd2 cont=v ss , no load 2.5 5 ua stand-by current ist cont=xt=v ss , no load note4) 1 ua v ih 2.31 3.3 v input voltage v il 0 0.99 v cont=0.8v dd 15.0 20.0 ua input current i in cont=0.2v dd 2.3 3.5 ua output off leakage current i oz cont=v ss , f outa and f outb =v dd cont=v ss , f outa and f outb =v ss 1 ua feedback resistance rf 1.93 k ? internal capacitor cg/cd fosc=155mhz 9/14 pf maximum oscillation frequency f max 160 mhz output signal symmetry sym f outa ? f outb , c l =5pf, r l =100 ? @1/2v od , hi side 45 50 55 % 1 differential output voltage |v od | 250 350 450 mv 2 ? differential output voltage ? v od 2 35 mv 2 offset voltage v os 1.125 1.25 1.375 v 3 ? offset voltage ? v os 2 25 mv 3 output short current 1 i os (short) 24 ma 4 output short current 2 i osd (short) 12 ma 5 differential output ripple v or note5) 150 mvp-p 6 output signal rise time tr r l =100 ? , c l =5pf 0.2v od to 0.8v od 0.3 1.5 ns 1 output signal fall time tf r l =100 ? , c l =5pf 0.8v od to 0.2v od 0.3 1.5 ns 1 output disable time t plz c l =5pf,r up =10k ? 100 ns 8 output enable time t pzl c l =5pf,r up =10k ? 100 ns 8 note4) excluding input current on cont terminal. note5) design guarantee.
2011/02/24 ( 4 / 7 ) NJU6398 ! measurement circuits (1) operating current / output signal symmetry / output signal rise / fall time (2) differential output voltage (3) offset voltage v dd or v ss 3.3v xt f outa v ss f outb r l =100 ? 0.001uf 0.1uf v dd or v ss 3.3v xt f outa v dd v ss f outb 0.001uf 0.1uf r l =50 ? r l =50 ? v 3.3v xt v dd x?tal f outb r l =100 ? xt 0.001uf 0.1uf c l =5pf c l =5pf
2011/02/24 ( 5 / 7 ) NJU6398 (4) output short current 1 (5) output short current 2 (6) differential output ripple 3.3v iosa iosb v dd or v ss xt f outa v dd v ss f outb 0.001uf 0.1uf 3.3v v dd or v ss xt f outa v dd v ss f outb 0.001uf 0.1uf iosd 3.3v xt f outa v dd v ss f outb xt 0.001uf 0.1uf r l =50 ? r l =50 ? m x?tal
2011/02/24 ( 6 / 7 ) NJU6398 (7) full load dc test output signal symmetry 1/2v od hl tr tf 80% 50% 20% 0v = v differential f outb f outa v differential = f outa ? f outb f outa ? f outb v ss v or v od v dd or v ss 3.3v xt f outa v dd v ss f outb 0.001uf 0.1uf r l =3.74k ? r l =3.74k ? v r l =100 ? v test v test 0v to 2.4v
2011/02/24 ( 7 / 7 ) NJU6398 (8) output disable time / output enable time [caution] the specifications on this data book are only given for information , without any guarantee as regards either mi stakes 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. cont f out t plz t pzl 0.2v dd v ol 0.8v dd v oh pulse generator cont 3.3v f outa v dd v ss f outb xt 0.001uf 0.1uf r up =10k ? r up =10k ? c l =10pf c l =10pf
|
