abv0202 low phase noise vcxo (24mhz to 50mhz) 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/11/05 page 1 features ? low phase noise vcxo output for the 24mhz to 50mhz range (-130 dbc at 10khz offset). ? cmos output. ? 12 to 25mhz crystal input. ? integrated variable capacitors. ? selectable high drive (30ma) or standard drive (10ma) output. ? wide pull range (+/- 250 ppm typ.). ? low jitter (rms): 3ps period (1 sigma). ? 3.3v operation. ? available in 8-pin soic. description the abv0202 is a low cost, high performance, low phase noise vcxo, providing less than -130dbc at 10khz offset in the 24mhz to 50mhz operating range. the very low jitter (3 ps rms period jitter) makes this chip ideal for applications requiring volt- age controlled frequency sources. input crystal can range from 12 to 25mhz (fundamental resonant mode). pin configuration 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 vcon varicap abv0202 1 2 3 45 6 7 8 xout n/c vcon gnd xin vdd clk n/c
abv0202 low phase noise vcxo (24mhz to 50mhz) 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/11/05 page 2 pin descriptions name number type description xout 1 i crystal output. see cr ystal specifications on page 3. n/c 2,7 - not connected. vcon 3 i voltage control input. gnd 4 p ground. clk 5 o output clock. vdd 6 p +3.3v power supply. xin 8 i crystal input. see crystal specifications on page 3. 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. dc 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 vcxo control voltage vcon 0 3.3 v
abv0202 low phase noise vcxo (24mhz to 50mhz) 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/11/05 page 3 3. ac electrical specifications 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. voltage control crystal oscillator parameters symbol conditions min. typ. max. units vcxo stabilization time * t vcxostb from power valid 10 ms vcxo tuning range f xin = 12 ? 25mhz; xtal c 0 /c 1 < 250 0v vcon 3.3v 500 ppm clk output pullability vcon=1.65v, 1.65v 200 ppm vcxo tuning characteristic 165 ppm/v pull range linearity 10 % vcon pin input impedance 2000 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. 5. 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 -100 dbc/hz phase noise relative to carrier 44m hz @1khz offset -123 dbc/hz phase noise relative to carrier 44m hz @10khz offset -130 dbc/hz phase noise relative to carrier 44m hz @100khz offset -125 dbc/hz phase noise relative to carrier 44m hz @1mhz offset -125 dbc/hz 6. crystal specifications parameters symbol min. typ. max. units crystal resonator frequency f xin 12 25 mhz crystal loading capacitance rating c l (xtal) 9.5 pf c0/c1 250 - esr r s 30 ? note : crystal loading rating: 9.5pf is the loading the crystal sees fr om the vcxo chip at vcon = 1.65v. it is assumed that the crys tal will be at nominal frequency at this load. if the crystal requires more load to be at nominal frequency, the additional load must be added externally. this however may reduce the pull range.
abv0202 low phase noise vcxo (24mhz to 50mhz) 30332 esperanza., rancho santa margarita, ca 92688 ph: 949-546-8000 fax: 949-546-8001 www.abracon.com 03/11/05 page 4 package information c l a eh d a1 e b 8 pin soic (in mm) 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 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 abv0202 (h)x c order number marking package option ABV0202SC ABV0202SC 8-pin soic (tube) ABV0202SC -t ABV0202SC 8- pin soic (tape and reel) abv0202hsc abv0202hsc 8-pin soic (tube) abv0202hsc - t abv0202 h sc 8 - pin soic (tape and reel) part number temperature c=commercial i=industrial package type s=soic optional high drive
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