pl 135- 67 low power, 1. 62 v to 3.63v, 10m hz to 40m hz, 1:6 oscillat or fanout b uffer micrel inc. ? 2180 fortune drive ? san jose, ca 951 31 ? usa ? tel +1(408) 944 - 0800 ? fax +1(408) 474 - 1000 ? www.micrel.com rev 02 / 14 / 11 page 1 clk 3 gndclk 1 clk 2 clk 5 clk 4 vdd clk0 vdd gnd oe1 gnd xin xout vdd 1 2 3 4 87 6 5 12 11 10 9 13 1415 16 oe 0 q f n 12 3 4 5 6 7 8 9 10 11 12 13 14 15 16 clk 3 gndclk 1 clk 2 clk 5 clk 4 vdd clk 0 vdd gnd oe 1 gnd xin xoutvdd oe 0 t s s o p features ? advanced oscillator design for wide frequency coverage ? 6 lvcmos outputs with 2 output enable pins ? 8ma output drive strength ? input/output frequency: o fundamental crystal: 10 mhz to 40mhz ? very low jitter and phase noise ? low current consumption ? single 1. 62 v to 3. 6 3v power supply ? available in qfn-16l and tssop-16l green/rohs compliant packages description the pl 135- 67 is an advanced oscillator fanout buffer design for high performance, low-power, small form- factor applications. the pl 135 - 67 accepts a fundamental input crystal of 10mhz to 40mhz and produces six outputs of the same frequency, two wit h their own output enable functions. offered in a small 3 x 3mm qfn or ts sop package, the pl135- 67 offers the best phase noise and jitter performance and lowest power consumption of any comparable ic. package pin configuration block diagram clk0 clk1 clk2 clk3 xin xout xtal osc oe0 clk4 clk5 oe1 downloaded from: http:///
pl 135- 67 low power, 1. 62 v to 3.63v, 10m hz to 40m hz, 1:6 oscillat or fanout b uffer micrel inc. ? 2180 fortune drive ? san jose, ca 951 31 ? usa ? tel +1(408) 944 - 0800 ? fax +1(408) 474 - 1000 ? www.micrel.com rev 02 / 14 / 11 page 2 package pin assignment name package pin # type description qfn- 16l (t)ssop-16l clk0 1 7 o output clock vdd 2, 9, 15 5, 8, 15 p v dd connection gnd 3, 6, 12 2, 9, 12 p gnd connection oe1 4 6 i* output enable (oe) input for clk1 . internal pull-up. pull low to tri-state clk1. clk1 5 11 o output clock clk2 7 13 o output clock clk3 8 14 o output clock xout 10 16 o crystal output. do not connect when using reference clock. x in 11 1 i crystal input clk4 13 3 o output clock clk5 14 4 o output clock oe0 14 4 i* output enable (oe) input for clk0 . internal pull-up. pull low to tri-state clk0. * note : these pins include an internal 60k ? pull up. downloaded from: http:///
pl 135- 67 low power, 1. 62 v to 3.63v, 10m hz to 40m hz, 1:6 oscillat or fanout b uffer micrel inc. ? 2180 fortune drive ? san jose, ca 951 31 ? usa ? tel +1(408) 944 - 0800 ? fax +1(408) 474 - 1000 ? www.micrel.com rev 02 / 14 / 11 page 3 layout recommendations the following guidelines are to assist you with a p erformance optimized pcb design: signal integrity and termination considerations - keep traces short! - trace = inductor. with a capacitive load this eq uals ringin g! - long trace = transmission line. without proper te rmination this will cause reflections (looks like r inging). - design long traces as striplines or microstrips with defined impedance. - match trace at one side to avoid reflections boun cing back and forth. decoupling and power supply considerations - place decoupling capacitors as close as possible to the v dd pin(s) to limit noise from the power supply - multiple v dd pins should be decoupled separately for best performance. - addition of a ferrite bead in series with v dd can help prevent noise from other board sources - value of decoupling capacitor is frequency dependant. typical value to use is 0.1 ? f. electrical specifications absolute maximum ratings parameters symbol min. max. units supply voltage range v dd -0.5 4.6 v input voltage range v i -0.5 v dd +0.5 v output voltage range v o -0.5 v dd +0.5 v storage temperature t s - 65 150 ? c ambient operating temperature* - 40 85 ? c exposure of the device under conditions beyond the limits specified by maximum ratings for extended pe riods may cause permanent damage to the device and affect product reliability. these conditions r epresent a stress rating only, and functional opera tions of the device at these or any other condition s above the operational limits noted in this specification is not implied. *operating temperature is guaranteed by design. par ts are tested to commercial grade only. typical cmos termination place series resistor as close as possible to cmos output cmos output buffer (typical buffer impedance 20 ) to cmos input series resistor use value to match output buffer impedance to 50 trace. typical value 30 50 line crystal tuning circuit series and parallel capacitors used to fine tune the crystal load to the circuit load. cst C series capacitor , used to lower circuit load to match crystal load . raises frequency offset . this can be eliminated by using a crystal with a cload of equal or greater value than the oscillator. cpt C parallel capacitors , used to raise the circuit load to match the crystal load . lowers frequency offset. crystal xin 1 8 xout cpt cpt cst downloaded from: http:///
pl 135- 67 low power, 1. 62 v to 3.63v, 10m hz to 40m hz, 1:6 oscillat or fanout b uffer micrel inc. ? 2180 fortune drive ? san jose, ca 951 31 ? usa ? tel +1(408) 944 - 0800 ? fax +1(408) 474 - 1000 ? www.micrel.com rev 02 / 14 / 11 page 4 ac specifications parameters conditions min. typ. max. units crystal input frequency fundamental crystal 10 40 mhz settling time at power-up (v dd > 1.62v) 2 ms output enable time oe function; ta=25o c, 10pf load 10 ns v dd sensitivity frequency vs. v dd , 10% -2 2 ppm output rise time 15pf load, 1 0/ 9 0% v dd , 3.3v 2 4 ns output fall time 15pf load, 90/1 0% v dd , 3.3v 2 4 ns output to output skew under all conditions 1 ns duty cycle under all conditions 45 50 55 % dc specifications parameters symbol conditions min typ max units supply current, dynamic i dd v dd = 3.3v, 25mhz, no l oad 7.1 ma v dd = 2.5v, 25mhz, no load 4.8 ma v dd = 1.8v, 25mhz, no load 3.4 ma operating voltage v dd 1.62 3.63 v output low voltage v ol i ol = +4ma, 3.3v 0.4 v output high voltage v oh i oh = -4ma, 3.3v 2.4 v output current i osd v ol = 0.4v, v oh = 2.4v 8 ma crystal specifications parameters symbol min. typ. max. units fundamental crystal resonator frequency f xin 10 40 mhz crystal loading rating c l (x ta l) 15 pf operating drive level 0.1 2 mw metal can crystal shunt capacitance c0 5.5 pf esr max esr 40 ? small smd crystal shunt capacitance c0 2.5 pf esr max esr 60 ? downloaded from: http:///
pl 135- 67 low power, 1. 62 v to 3.63v, 10m hz to 40m hz, 1:6 oscillat or fanout b uffer micrel inc. ? 2180 fortune drive ? san jose, ca 951 31 ? usa ? tel +1(408) 944 - 0800 ? fax +1(408) 474 - 1000 ? www.micrel.com rev 02 / 14 / 11 page 5 package drawings (green package com pliant) qfn 16l tssop 16l symbol dimension in mm min. max. a 0.07 0.8 a1 0.05 0. 05 a3 0.20 b 0. 18 0. 30 d 3.00 bsc e 3.00 bsc d1 -- 1. 70 e1 -- 1.70 l 0.30 0.50 e 0.50 bsc symbol dimension in mm 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 6.20 6.60 l 0.45 0.75 e 0.635 bsc c l a e h d a1 e b ? seating plane a1 a3 b e1 d1 a e l d e pin 1 dot downloaded from: http:///
pl 135- 67 low power, 1. 62 v to 3.63v, 10m hz to 40m hz, 1:6 oscillat or fanout b uffer micrel inc. ? 2180 fortune drive ? san jose, ca 951 31 ? usa ? tel +1(408) 944 - 0800 ? fax +1(408) 474 - 1000 ? www.micrel.com rev 02 / 14 / 11 page 6 ordering inform ation (green package com pliant) for part ordering, please contact our sales department: 2180 fortune drive, san jose, ca 95131, usa tel: (408) 944-0800 fax: (408) 474-1000 part number the order number for this device is a combination of the follo wing: part number, package type and operating temperature range p l 1 3 5 - 6 7 x x - x p a r t n u m b e r p a c k a g e t y p e o = tssop-16l q = qfn-16l t e m p e r a t u r e r a n g e c=commercial (0c to 70c) s h i p p i n g o p t i o n none=tubes r=tape and reel part number/order number marking package option pl135- 67 oc p135- 67 oc lllll 16 -pin tssop (tube) pl135- 67 oc -r 16 -pin tssop (tape and reel) pl 13 5- 67 qc -r p135 67 lll 16 -pin qfn (tape and reel) *note: l ll designates lot number micrel inc., reserves the right to make changes in its products or specifications, or both at any time without notice. the in formation furnished by micrel is believed to be accurate and reliable. however, micrel makes no guarantee or warranty concerning the accuracy of said information and shall not be re sponsible for any loss or damage of whatever nature resulting from the use of, or reliance upon this product. life s upport policy : micrels products are not authorized for use as critical components in life support devices or sys tems without the express written approval of the president of micrel inc. downloaded from: http:///
|
