1、_ 8kHz I H 、 ? H MAX9486 4 6 35.328MHz LVTTL H 。 H V T1、 E1、 T3、 E3 xDSL 4H 。MAX9486 M (PLL)， B PLL P e8 (VCXO)。 = PLL B qE 。MAX9486 PLL $ 3 35.328MHz q 。 N ， q 3 8kHz ， IH?4 z| 。MAX9486 24 TSSOP ， T -40C +85C Z)S ， P +3V +3.6V 。_ T1、 E1、 T3、 E3 ISDN xp !CO， xp g xDSL !_+ 8kHz I H I H 200ppm = 8kHz
2、I q q ： 35.328MHz 6 LVTTL 1 8kHz I H? +3.3V 24 TSSOP MAX94868kHz I H 4 35.328MHz_ 19-3345; Rev 0; 8/04V4 PART TEMP RANGE PIN-PACKAGEMAX9486EUG -40C to +85C 24 TSSOP242322212019181712345678CLK1GNDCLK2VDDVDDPREINREOTOP VIEWCLK3VDDGNDCLK4X2VDDX1GNDP161514139101112VDDCLK5GNDCLK6SETILP1LP2GNDTSSOPMAX9486
3、SHDN_ MAX9486CLK2X1CLK1VDDPGNDPX2REOCLK6CLK5CLK4CLK3GNDVDDLP1 LP2REINRSETR1C1C2SETIVDDSHDN_ _ Maxim Integrated Products 1 Maxim T r Maxim JrisN 3p3b hir V ?i3FJrp M h I Maxim 4 b | n“ K hMaxim:www.maxim-bMAX94868kHz I H 4 35.328MHz2 _ABSOLUTE MAXIMUM RATINGSDC ELECTRICAL CHARACTERISTICS(VDD= VDDP= +
4、3.0V to +3.6V, TA= -40C to +85C, unless otherwise noted. Typical values are at VDD= VDDP= +3.3V, TA=+25C.) (Note 1)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functionaloperation of the device at these or
5、any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure toabsolute maximum rating conditions for extended periods may affect device reliability.VDDto GND.-0.3V to +4.0VVDDPto GNDP.-0.3V to +4.0VSHDN, REO, REIN, X1, X2, CLK_ to GND .-0.3V
6、 to (VDD+ 0.3V)LP1, SETI to GNDP.-0.3V to (VDD+ 0.3V)LP2 Internally Connected to GNDPShort-Circuit Duration of Outputs.ContinuousContinuous Power Dissipation (TA= +70C)24-Pin TSSOP (derate 12.2mW/C above +70C) .976mWOperating Temperature Range .-40C to +85CMaximum Junction Temperature .+150CStorage
7、Temperature Range .-60C to +150CESD Rating (Human Body Model) .2kVLead Temperature (soldering, 10s) .+300CPARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITSDIGITAL INPUTS (REIN, SHDN)Input High Logic Level VIH2.0 VInput Low Logic Level VIL0.8 VInput-Current High Level IIHVIN= VDD20 AInput-Current Low Lev
8、el IILVIN= 0 -20 ADIGITAL OUTPUT CLOCKS (CLK1CLK6, REO)Output High Logic Level VOHIOH= -4mAVDD-0.6VVOutput Low Logic Level VOLIOL= 4mA 0.4 VPOWER SUPPLY (VDD, VDDP)Power-Supply Range VDD3.0 3.6 VPLL Power-Supply Range VDDP3.0 3.6 VPower-Supply Current IDD+ IDDP(Note 2) 13 25 mAShutdown Supply Curren
9、t ISHDN830AMAX94868kHz I H 4 35.328MHz_ 3Note 1: Specifications are 100% tested at TA= +25C. Specifications over temperature are guaranteed by design and characterization.Note 2: No load on clock outputs.Note 3: Guaranteed by design.Note 4: Crystal loading capacitance is 14pF.AC ELECTRICAL CHARACTER
10、ISTICS(VDD= VDDP= +3.0V to +3.6V, CL= 20pF, TA= -40C to +85C, unless otherwise noted. Typical values are at VDD= VDDP= +3.3V,TA= +25C.) (Note 3)PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITSDIGITAL OUTPUT CLOCKS (CLK1CLK6)Frequency Range fOUT35.328 MHzClock Rise Time TR120% to 80% VDD1.8 nsClock Fall
11、 Time TF180% to 20% VDD1.8 nsDuty Cycle 40 50 60 %Period Jitter JPP1Peak-to-peak 120 psOutput Skew tSPeak-to-peak 185 psREFERENCE CLOCK OUTPUT (REO)Frequency fREF8 kHzClock Rise Time TR21.8 nsClock Fall Time TF21.8 nsDuty Cycle 40 50 60 %VCXOCrystal Frequency fXTL17.664 MHzCrystal AccuracyIncluding
12、frequency accuracy andtemperature range25 ppmVCXO Pulling Range (Note 4) -200 +200 ppmInput Reference CLK Pulse Width tWMeasured at high or low states 10 nsMAX948608kHz I H 4 35.328MHz4 _ T+(VDD= VDDP= +3.3V, TA= +25C, unless otherwise noted.)OUTPUT WAVEFORMMAX9486 toc0110ns/divOUTPUT CLOCK JITTER (
13、P-P)vs. TEMPERATUREMAX9486 toc02TEMPERATURE (C)OUTPUT CLOCK JITTER (ps)603510-158090100110120130140-40 85OUTPUT CLOCK JITTER (P-P)vs. SUPPLY VOLTAGEMAX9486 toc03SUPPLY VOLTAGE (V)OUTPUT CLOCK JITTER (ps)3.53.43.33.23.11001051101151201251301351403.0 3.6OUTPUT FREQUENCY VARIATIONvs. INPUT REFERENCE FR
14、EQUENCYMAX9486 toc04INPUT REFERENCE FREQUENCY (kHz)OUTPUT FREQUENCY VARIATION (ppm)8.0028.0018.0007.9997.998050-50100-100150-150200-200250-250CENTERED AT35.328MHzSUPPLY CURRENT (IDD+ IDDP)vs. SUPPLY VOLTAGEMAX9486 toc05SUPPLY VOLTAGE (V)SUPPLY CURRENT (mA)3.53.43.33.23.11012141683.0 3.6TA= -40CTA= +
15、25CTA= +85CSHUTDOWN SUPPLY CURRENTvs. SUPPLY VOLTAGEMAX9486 toc06SUPPLY VOLTAGE (V)SUPPLY CURRENT (A)3.53.43.33.23.189101112763.0 3.6TA= +85CTA= -40CTA= +25CMAX94868kHz I H 4 35.328MHz_ 5PIN NAME FUNCTION1 SHDN Active-Low Shutdown Input2 REO Reference Clock Output. REO is an 8kHz reference clock out
16、put with jitter suppression.3 REIN Reference Input4VDDPPhase-Lock Loop (PLL) Power Supply. Bypass VDDPwith 0.1F and 0.001F capacitors to GNDP.5 GNDP PLL Ground6 X1 Crystal Input 1. Connect X1 to a fundamental mode crystal for the VCXO.7, 16, 19,21VDDDigital Power Supply. Bypass VDDwith 0.1F and 0.00
17、1F capacitors to GND.8 X2 Crystal Input 2. Connect X2 to a fundamental mode crystal for the VCXO.9, 14, 18,23GND Ground10 LP2External Filter 2. Connect the loop filter capacitors and a resistor between LP1 and LP2 (see the TypicalApplication Circuit). LP2 is internally connected to GNDP.11 LP1Extern
18、al Filter 1. Connect the loop filter capacitors and a resistor between LP1 and LP2 (see the TypicalApplication Circuit).12 SETICharge-Pump Current-Setting Input. Connect a resistor from SETI to GNDP to set PLL charge-pump current(see the Detailed Description section).13 CLK6 Clock Output 6 at 35.328
19、MHz15 CLK5 Clock Output 5 at 35.328MHz17 CLK4 Clock Output 4 at 35.328MHz20 CLK3 Clock Output 3 at 35.328MHz22 CLK2 Clock Output 2 at 35.328MHz24 CLK1 Clock Output 1 at 35.328MHz_ ? r1 I H 。 REO 8kHz I H 。 I M (PLL) 。 0.1F 0.001F | VDD GND。PLL 1， | X1 B 8 ， VCXO P 。3 。 0.1F 0.001F | VDD GND。 2， | X2
20、 B ， VCXO P 。 ro 2。 LP1 LP2 W ro E (n )。LP2 = GNDP。 ro 1。 LP1 LP2 W ro E (n )。, ! 。 SETI GNDP W BE ! PLL , (n W% B )。35.328MHz H 635.328MHz H 535.328MHz H 435.328MHz H 335.328MHz H 235.328MHz H 1MAX9486_ W% MAX9486 8kHz I H ? H 。 q 3 6 M 35.328MHz LVTTL H 。 MAX9486 PLL。 B PLL (PLL1) P = VCXO， 8kHz I
21、 H ， = PLL (PLL2) 3 17.664MHz 。 PLL2 VCXO q 335.328MHz 。 N ， q I H?4 z 8kHz | (n m ) 。 H ， ($ ， i$ ( ) 256ms。 256ms ， 8 7 S 。 PLL1 I H 8kHz， 17.664MHz q H9 PLL2 I H 。 T H 8kHz I H ， PLL1 q| 8 q 。8kHz I HS eMAX9486 P = H (CLK) S e _ 8kHz I H 。 = HS e B (8kHz)HW3 g =_ KM “ 。 TKM “l= ， = HS e U I H 。T
22、HW3 g = ， S e _= KM ， 5 I H 。 S e _ 8kHz I H H ， PLL2 $ 8 q 。 S e _ I HQC H ， PLL1 I H 。H (CLK1CLK6) REOMAX9486 B 17.664MHz B I H(REIN) 3 6 M 35.328MHz ： CLK1 CLK6。 CLK_ ( 185ps M LVTTL 。 MAX9486 REO 3 8kHz I H 。 e8 (VCXO)MAX9486 = VCXO 17.664MHz 8T q ， q S 200ppm。 PVCXO PLL B ? r“ I H N ro ， i REO
23、CLK_ h“ | 。8kHz I H 4 35.328MHz6 _MAX9486PLL1CLK2VCXOX1CLK1VDDP GNDP/2208PHASE DETECTORANDCHARGE PUMPPLL2VCO/2X2REOCLK6CLK5CLK4CLK3GNDVDDLP1 LP2REFERENCE CLKMONITORREINSETIPHASE DETECTOR,CHARGE PUMP, ANDLOOP FILTERSHDN_ mSHDN TMAX9486 l 8A ( )1 T 。z SHDN P 1 T 。 T/ ， ( ， PLL ( 。 SHDN M ， 256ms ， P ?
24、 - PLL。_ 84MAX9486 B 17.664MHz 8T VCXO q 。 a F8d1 ， E q S ， MVv 。4 17.664MHz， s qTSY ， MS 25ppm AT M8 。 8 14pF。 8 S 。 W% = V IMAX9486 。PLL1 ro MAX9486 PLL: PLL1 PLL2。 B M ，PLL1， “ VCXO， 86 I|ihl 。 m 1 PE R1 C1、 C2 PLL ro Uim 。 ro LP1 LP2 W ， T U 。 ro z C1、 C2、 R1 RSET% ， RSET !, 。 C1、 C2、 R1 RSETsY
25、22nF、 560pF、1000k 13k。/ T 9 Hz V U PLL z ：BW = (R1 x ISETIx 940) / N R1 () PLL1 ro E (m 1)。 ISETI(A) , ! B T9 , ， N8 PLL s “ ， 2208。 E D“ / T9 ： C1 (F) R1 ()m 1 PLL1 ro E ISETI9 n , ! B ， N “ 2208。/ T ro C1 C2 1“ ：C2 C1/20, !MAX9486 ! PLL1 , 。 SETI GNDP WBE ! PLL1 , ：Charge-Pump Current = 2.4 x 1000
26、 / (RSET(k) + 1) RSET kV U ， , A V U 。, # VCXO ro q ( V ! ， yN VYV Y + y p 。L MAX9486 q1 p L “d 。 KD ? ， qb q1 V ? 。GND 3 AC M| H 3.2 。 GND K 。 P 0.1 F 0.001F VDD VDDP， qz 。 % PC L !9 Vhl 3 W1 。LP1 LP2 W L V ? ， E q V ? 。_ TRANSISTOR COUNT: 7512PROCESS: CMOSDampingFactorRICNSETI=1125900MAX94868kHz I
27、 H 4 35.328MHz_ 7R1C1C2LP1LP2m1. ro MAX94868kHz I H 4 35.328MHzTSSOP4.40mm.EPS_ ( 4 m V ? K? K h www.maxim- )Maxim Maxim P394 Vb Maxim = HWa Y -4/ ? b8 _Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 2004 Maxim Integrated Products Printed USA Maxim Integrated Products, Inc. SbMAXIM Y)8328Q I 100083n800 810 0310010-6201 0598.010-6201 0298
