abv2038/39 pecl and lvds low phase noise vcxo (for 65-130mhz fund xtal) 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/21/05 page 1 features ? 65mhz to 130mhz fundamental mode crystal. ? output range: 65mhz ? 130mhz (no pll). ? low injection power for crystal 50uw. ? pecl (abv2038) or lvds output (abv2039). ? integrated variable capacitors. ? supports 2.5v or 3.3v-power supply. ? available in 16-pin (tssop or 3x3 qfn). description the abv2038/-39 is a family of vcxo ic?s specifically designed to pull high frequency fundamental crystals from 65mhz to 130mhz, with selectable pecl or lvds outputs.. they achieve very low current into the crystal resulting in better overall stability. their internal varicaps allow an on chip frequency pulling, controlled by the vcon input. their very low jitter makes them ideal for the most demanding timing requirements. block diagram pin configuration output enable l ogical levels part # oe state 0 (default) output enabled abv2038 1 tri-state 0 tri-state abv2039 1 (default) output enabled oe input: logical states defined by pecl levels for abv2038 logical states defined by cmos levels for abv2039 abv203x 1 2 3 4 5 6 7 8 vdd 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 xin xout n/c n/c oe vcon gnd n/c n/c gnd clkc vdd clkt n/c n/c xin xout oe q abv203x vcon q oscillator amplifier w/ integrated varicaps abv203x gnd vdd clkt clkc vdd n/c n/c vdd xout xin n/c oe gnd vcon gnd gnd 4 16 15 14 13 12 11 10 9 8 7 6 5 123
abv2038/39 pecl and lvds low phase noise vcxo (for 65-130mhz fund xtal) 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/21/05 page 2 pin descriptions name number type description xin 2 i crystal input. see crystal specifications on page 2. xout 3 i crystal output. see cr ystal specifications on page 2. oe 6 i output enable. see output enable logic table on page 1. vcon 7 i voltage control input. gnd 8, 14 p ground. clkt 11 o true output pecl (abv2038) or lvds (abv2039). clkc 13 o complementary output pecl (abv2038) or lvds (abv2039). n/c 4,5,9,10,15,16 - not connected. vdd 1, 12 p power supply. electrical specifications 1. absolute maximum ratings parameters symbol min. max. units supply voltage v dd 4.6 v input voltage, dc v i -0.5 v dd +0.5 v output voltage, dc v o -0.5 v dd +0.5 v storage temperature t s -65 150 c ambient operating temperature* t a -40 85 c junction temperature t j 125 c lead temperature (soldering, 10s) 260 c esd protection, human body model 2 kv exposure of the device under conditions beyond the limits specif ied by maximum ratings for extended periods may cause permanent damage to the device and affect product reliability. thes e conditions represent a stress rating on ly, and functional operations of the devic e at these or any other conditions above the operational limits noted in this spec ification is not implied. * note : operating temperature is guaranteed by design for all parts (commercial and industrial), but tested for commercial grade only . 2. crystal specifications parameters symbol conditions min. typ. max. units oscillation frequency of fund 65 130 mhz crystal load cl 8.5 pf inter-electrode capacitance c 0 2.6 c0/c1 ratio (gamma) 300 -
abv2038/39 pecl and lvds low phase noise vcxo (for 65-130mhz fund xtal) 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/21/05 page 3 3. voltage control crystal oscillator (3.3v) parameters symbol conditions min. typ. max. units vcxo stabilization time * t vcxostb from power valid 10 ms vcxo tuning range f xin = 100 ? 200mhz; xtal c 0 /c 1 < 250 0v vcon 3.3v 200* ppm clk output pullability vcon=1.65v, 1.65v 100* ppm on-chip varicaps control range vcon = 0 to 3.3v 4 ? 18* pf linearity 10* % vcxo tuning characteristic 65 ppm/v vcon input impedance 60 k ? vcon modulation bw 0v vcon 3.3v, -3db 25 khz note: parameters denoted with an asterisk (*) represent nominal charac terization data and are not production tested to any specific limits. 4. general electrical specifications parameters symbol conditions min. typ. max. units supply current (loaded outputs) i dd pecl/lvds 100/80 ma operating voltage v dd 2.97 3.63 v output clock duty cycle @ 1.25v (lvds) @ v dd ? 1.3v (pecl) 45 45 50 50 55 55 % short circuit current 50 ma 5. jitter specifications parameters conditions min. typ. max. units period jitter rms 77.76mhz 2.5 ps period jitter peak-to-peak 77.76mhz 18.5 ps integrated jitter rms integrated 12 khz to 20 mhz at 77.76mhz 0.5 ps 6. phase noise specifications parameters frequency @10hz @ 100hz @1khz @10khz @100khz units phase noise relative to carrier 77.76mhz -75 -95 -125 -145 -155 dbc/hz note: phase noise measured at vcon = 0v
abv2038/39 pecl and lvds low phase noise vcxo (for 65-130mhz fund xtal) 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/21/05 page 4 7. lvds electrical characteristics parameters symbol conditions min. typ. max. units output differential voltage v od 247 355 454 mv v dd magnitude change ? v od -50 50 mv output high voltage v oh 1.4 1.6 v output low voltage v ol 0.9 1.1 v offset voltage v os 1.125 1.2 1.375 v offset magnitude change ? v os r l = 100 ? (see figure) 0 3 25 mv power-off leakage i oxd v out = v dd or gnd v dd = 0v 1 10 ua output short circuit current i osd -5.7 -8 ma 8. lvds switching characteristics parameters symbol conditions min. typ. max. units differential clock rise time t r 0.2 0.7 1.0 ns differential clock fall time t f r l = 100 ? c l = 10 pf (see figure) 0.2 0.7 1.0 ns out out v od v os 50 ? 50 ? out v diff r l = 100 ? c l = 10pf c l = 10pf lvds switching test circuit lvds levels test circuit lvds transistion time waveform out out out 0v (differential) 0v 20% 80% 20% 80% t r t f v diff
abv2038/39 pecl and lvds low phase noise vcxo (for 65-130mhz fund xtal) 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/21/05 page 5 9. pecl electrical characteristics parameters symbol conditions min. max. units output high voltage v oh v dd ? 1.025 v output low voltage v ol r l = 50 ? to (v dd ? 2v) (see figure) v dd ? 1.620 v 10. pecl switching characteristics parameters symbol conditions min. typ. max. units clock rise time t r @20/80% - pecl 0.6 1.5 ns clock fall time t f @80/20% - pecl 0.5 1.5 ns out out 50 ? 50 ? pecl levels test circuit pecl transistion time waveform out out 50% 20% 80% t r t f vdd duty cycle 45 - 55% 55 - 45% 50% out out t skew pecl output skew 2.0v
abv2038/39 pecl and lvds low phase noise vcxo (for 65-130mhz fund xtal) 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/21/05 page 6 package information c l a eh d a1 e b 16 pin tssop ( mm ) symbol min. max. a - 1.20 a1 0.05 0.15 b 0.19 0.30 c 0.09 0.20 d 4.90 5.10 e 4.30 4.50 h 6.40 bsc l 0.45 0.75 e 0.65 bsc 3x3mm qfn
abv2038/39 pecl and lvds low phase noise vcxo (for 65-130mhz fund xtal) 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/21/05 page 7 ordering information abracon corporation, reserves the right to make changes in its products or specifications, or bo th at any time without notice. the information furnished by abracon is believed to be accurate and reliable. however, abracon makes no guarantee or warranty concerning the a ccuracy of said information and shall not be responsible for any loss or damage of whatever nature resulting from the use of, or reliance upon this product. life support policy : abracon?s products are not authorized for use as critical comp onents in life support devices or systems without the express written approval of the president of abracon corporation. for part ordering, please contact our sales department: 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 part number the order number for this device is a combination of the following: device number, package type and operating temperature range abv203x o c order number marking package option abv2038oc abv2038oc tssop - tube ABV2038OC-T abv2038oc tssop - tape & reel abv2038qc abv2038qc qfn - tube abv2038qc-t abv2038qc qfn - tape & reel abv2039oc abv2039oc tssop - tube abv2039oc-t abv2039oc tssop - tape & reel abv2039qc abv2039qc qfn - tube abv2039qc-t abv2039qc qfn - tape & reel part number temperature c=commercial i=industral package type o=tssop q=qfn
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