abx0201 low phase noise xo (24mhz to 50mhz) 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/21/05 page 1 features ? low phase noise xo outp ut for the 24mhz to 50mhz range (-135 dbc at 10khz offset). ? 12 to 25mhz crystal input. ? integrated crystal load capacitor: no external load capacitor required. ? low jitter (rms): 3ps period jitter (1 sigma). ? selectable high drive (30ma) or standard drive (10ma) output. ? 3.3v operation. ? available in 8-pin tssop or soic. description the abx0201 is a low cost, high performance and low phase noise xo, providing less than -135dbc at 10khz offset in the 24mhz to 50mhz operating range. the very low jitter (3ps rms period jitter) makes this chip ideal for applications requiring clean reference frequency sources. input crystal can range from 12 to 25mhz (fundamental resonant mode). pin configuration ^: denotes internal pull-up output range multiplier frequency range output buffer x2 24 - 50mhz cmos block diagram reference divider phase comparator charge pump loop filter vco vco divider xtal osc oe xin xout clk abx0201 1 2 3 45 6 7 8 clk vdd oe^ xin gnd n/c xout gnd
abx0201 low phase noise xo (24mhz to 50mhz) 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 clk 1 o output clock. vdd 2 p +3.3v power supply. oe 3 i output enable input. disables (tri-state) output when low. internal pull-up enables output by default if pin is not connected to low. xin 4 i crystal input. see crystal specifications on page 3. xout 5 i crystal output. see cr ystal specifications on page 3. n/c 6 - not connected. gnd 7, 8 p ground. 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 con- ditions above the operational limits noted in this specification is not implied. * note : operating temperature is guaranteed by design for all parts (commercial and industrial), but tested for commercial grade only . 2. dc electrical specifications parameters symbol conditions min. typ. max. units supply current, dynamic, with loaded outputs i dd f xin = 12 - 25mhz output load of 10pf 16 20 ma operating voltage v dd 2.97 3.63 v i oh v oh = v dd -0.4v, v dd =3.3v 30 ma output drive current (high drive) i ol v ol = 0.4v, v dd = 3.3v 30 ma i oh v oh = v dd -0.4v, v dd =3.3v 10 ma output drive current (standard drive) i ol v ol = 0.4v, v dd = 3.3v 10 ma short circuit current 50 ma
abx0201 low phase noise xo (24mhz to 50mhz) 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/21/05 page 3 3. ac specification parameters symbol conditions min. typ. max. units input crystal frequency 12 25 mhz output clock rise/fall time (standard drive) 0.3v ~ 3.0v with 15 pf load 2.4 output clock rise/fall time (high drive) 0.3v ~ 3.0v with 15 pf load 1.2 ns output clock duty cycle measured @ 50% v dd 45 50 55 % 4. jitter and phase noise specification parameters conditions min. typ. max. units rms period jitter (1 sigma ? 1000 samples) at 44mhz, with capacitive decoup- ling between vdd and gnd. 3 ps phase noise relative to carrier 44m hz @100hz offset -80 dbc/hz phase noise relative to carrier 44m hz @1khz offset -110 dbc/hz phase noise relative to carrier 44m hz @10khz offset -135 dbc/hz phase noise relative to carrier 44m hz @100khz offset -130 dbc/hz phase noise relative to carrier 44m hz @1mhz offset -132 dbc/hz 5. crystal specifications parameters symbol min. typ. max. units crystal resonator frequency f xin 12 25 mhz crystal loading capacitance rating c l (xtal) 20 pf driving power 1 mw esr r s 30 ? package information c l a 8 pin ( dimensions in mm ) narrow soic symbol min. max. a 1.47 1.73 a1 0.10 0.25 b 0.33 0.51 c 0.19 0.25 d 4.80 4.95 e 3.80 4.00 h 5.80 6.20 l 0.38 1.27 e 1.27 bsc e h d a1 e b tssop min. max. - 1.20 0.05 0.15 0.19 0.30 0.09 0.20 2.90 3.10 4.30 4.50 6.20 6.60 0.45 0.75 0.65 bsc
abx0201 low phase noise xo (24mhz to 50mhz) 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/21/05 page 4 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 fur- nished by abracon is believed to be accurate and reliable. ho wever, abracon makes no guarantee or warranty concerning the accu racy of said infor- mation and shall not be responsible for any loss or damage of wh atever 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 abx0201 (h) x c order number marking package option ABX0201OC-T abx0201oc tssop - tape and reel abx0201oc abx0201oc tssop - tube abx0201hoc-t abx0201hoc tssop - tape and reel abx0201hoc abx0201hoc tssop - tube abx0201sc-t abx0201sc so ic ? tape and reel abx0201sc abx0201sc soic ? tube abx0201hsc-t abx0 201hsc soic ? tape and reel abx0201hsc abx020 1hsc soic ? tube part number temperature c=commercial i=industral package type s=soic , o=tssop optional high drive
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