preliminary ABX0027T/37t low power 3 outputs xo 10mhz to 52mhz 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/21/05 page 1 features ? 3 cmos outputs with oe tri-state control ? low current consumption: ABX0027T: <4.5ma @ 27mhz with standard cmos buffer (3.3v) abx0037t: <3.0ma @ 27mhz with cmos compatible clipped buffer, offering the lowest current consumption (3.3v) ? 10 to 52mhz fundame ntal crystal input. ? low phase noise (-130 dbc @ 10khz offset). ? low jitter (rms): 2.5ps period jitter. ? 12ma drive capability at ttl output. ? 1.62v to 3.63v dc operation. ? available in 8 pin soic. description the ABX0027T/-37t form a low cost family of xo ic?s, designed to replace multiple xo solutions sav- ing the cost and board space of clock distribution buffers. in addition, they provide among the lowest current on the market for the 10mhz to 52mhz range. they accept input cr ystals from 10 to 52mhz (fundamental resonant mode) and provide low phase noise (<-130dbc at 10khz offset at 30mhz), and very low jitter (2.5 ps rms period jitter) outputs. pin assignment block diagram xtal osc xin/fin xout clk0 oe clk1 clk2 abx00x7t 1 2 3 45 6 7 8 xin/fin oe^ clk1 gnd xout vdd clk2 clk0 ^: denotes internal pull-up
preliminary ABX0027T/37t low power 3 outputs xo 10mhz to 52mhz 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/21/05 page 2 pin description name pin # type description xin/fin 1 i crystal input ( 10mhz to 52mhz ) or ref clock input. oe 2 i output enable input. this pin has internal pull-up resistor. all outputs will be tri-stated when low. clk1 3 o output clock. gnd 4 p ground. clk2 5 o output clock. vdd 6 p power supply. clk0 7 o output clock. xout 8 i crystal output. 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. ac electrical specifications parameters conditions min. typ. max. units input crystal frequency 10 52 mhz settling time at power-up (v dd reaches 1.62v) 10 ms 0.8v ~ 2.0v with 10 pf load 1.15 output clock rise/fall time 0.3v ~ 3.0v with 15 pf load 2.4 ns vdd sensitivity frequency vs. v dd +/- 10% 0.8 0.8 ppm output clock duty cycle measured @ 50% v dd 45 50 55 % short circuit current 50 ma
preliminary ABX0027T/37t low power 3 outputs xo 10mhz to 52mhz 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/21/05 page 3 3. jitter and phase noise specifications parameters conditions min. typ. max. units rms period jitter (1 sigma ? 1000 samples) with capacitive decoupling between v dd and gnd. 2.1 2.5 ps phase noise relative to carrier 30m hz @100hz offset -80 dbc/hz phase noise relative to carrier 30m hz @1khz offset -110 dbc/hz phase noise relative to carrier 30m hz @10khz offset -130 dbc/hz phase noise relative to carrier 30m hz @100khz offset -138 dbc/hz phase noise relative to carrier 30m hz @1mhz offset -145 dbc/hz 4. dc specifications parameters symbol conditions min. typ. max. units at 10mhz, cload=15pf 2.0 / 1.5 2.5 / 2.0 at 13.5mhz, cload=15pf 2.4 / 1.6 3.0 / 2.0 at 17.7mhz, cload=15pf 3.0 / 2.0 3.5 / 2.5 at 27mhz, cload=15pf 4.0 / 2.5 4.5 / 3.0 supply current, dynamic, with loaded outputs (at vdd = 3.3v) respectively for pll600 -27t/-37t i dd at 48mhz, cload=15pf 7.0 / 4.0 7.5 / 4.5 ma supply current in tri-state i dd output disabled 520 a operating voltage v dd 1.62 3.63 v -27t i oh = -12ma (1) (3.3v) 2.4 v output high voltage v oh -37t (1) , i oh = -12ma (1) (3.3v) 2.4 2.9 v -27t i ol = 12ma (1) (3.3v) 0.4 v output low voltage v ol -37t (1) , i ol = 12ma (1) (3.3v) 0.32 0.4 v output high voltage at cmos level (ABX0027T) v ohc i oh = -4ma v dd ? 0.4 v output drive current (ABX0027T) at ttl level (3.3v) 12 17 ma (1): abx0037t has non-standard cmos voh and vol levels for lowe r current consumption, but meets cmos input stage needs. abx0037 t should be used to drive pure capacitive loads only. 5. crystal specifications parameters symbol min. typ. max. units crystal resonator frequency f xin 10 52 mhz crystal loading rating c l (xtal) 8.5 pf maximum sustainable drive level 200 w operating drive level 50 w c0 (for frequencies below 30mhz) 5 pf c0 (for frequencies above 30mhz) 4 pf esr r s 30 ? note: a detailed crystal specification docum ent is also available for this part
preliminary ABX0027T/37t low power 3 outputs xo 10mhz to 52mhz 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/21/05 page 4 package information 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 abx00x7t s c order number marking package option ABX0027T sc ABX0027T sc 8 pin soic - tubes ABX0027T sc-t abx0 027t sc 8 pin soic - tape and reel abx0037t sc abx0037t sc 8 pin soic - tubes abx0037t sc-t abx0 037t sc 8 pin soic - tape and reel part number temperature c=commercial i=industrial package type s=soic 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 a 1 e b
|
