Advanced programmable with Spread Spectrum Crystal Reference Clock inp
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PicoEMI Programmable Spread Spectrum Clock
Advanced programmable with Spread Spectrum Crystal Reference Clock input Fundamental crystal: 10MHz 40MHz Reference input: 1MHz 200MHz Accepts 0.1V reference signal input voltage Output frequency range: 166MHz 2.5V 200Mhz 3.3V operation programmable outputs Programmable Spread Spectrum Modulation Magnitude: Center Spread: ±0.125% ±2.0% ±0.125% steps Down Spread: -0.25% -4.0% 0.25% steps Spread Spectrum On/Off selection Programmable output drive (4mA, 8mA, 16mA) Cycle Cycle jitter. Single 2.5V 3.3V, power supply Operating temperature range from -40C Available 8-pin SOP, MSOP 6-pin GREEN/RoHS compliant packaging
DESCRIPTION
PL671-01 advanced programmable Spread Spectrum clock generator (PSSCG), member PhaseLink's PicoPLLProgrammable Clock family. PL671-01 offers three 200MHz outputs, allows programming modulation type (Center Down Spread) well modulation magnitudes (±0.125% ±2.0% -0.25% -4.0%). addition, CSEL[0:1] pins used toggle device thru pre-programmed configurations. option being able turn `ON/OFF' Spread Spectrum modulation allows completing design with PL671-01 having assurance turning `ON' modulation, becomes issue. PL671-01's frequency modulation greatly reduces fundamental harmonic frequencies' peak magnitude, therefore reducing system level Electro Magnetic Interference (EMI), much 20dB
CONFIGURATION
XIN/FIN PDB^/CLK1 CSEL1^
Note: Denotes Pull-up resistor
XOUT CSEL0^/CLK2 CLK0
(M)SOP-8L
BLOCK DIAGRAM
Modulation Xtal Modulation Magnitude* CLK[0:2] CSEL[0:1] On/Off Optional Pre-defined Modulation Magnitude Control Programmable Function P-Counter 6-bits Odd/Even R-Counter 9-bits
Phase Detector
Charge Pump
Loop Filter
M-Counter 11-bits
FVCO FREF (M/R) FOUT FVCO Selectable
47745 Fremont Blvd., Fremont, California 94538 (510) 492-0990 (510) 492-0991 www.phaselink.com 7/27/07 Page
PicoEMI Programmable Spread Spectrum Clock
PACKAGE ASSIGNMENT
Name XIN/FIN (M)SOP8L SOT236L Type Description Crystal Reference input This programmed function (input) CLK1 (output). Power Down (PDB) input. This internal pull resistor turns oscillator output when pulled logic "0". Logic Output (Default) Normal Operation (Default) Clock1 (CLK1) output. This optional clock (Programmable output). CSEL1 CLK0 Selector used toggle between pre-programmed configurations (When used conjunction with CSEL0 there four possible pre-defined configurations choose from). connection Programmable Clock Output with spread spectrum. This programmed function CSEL0 (input) CLK2 (output). CSEL0 input. Selector used toggle between preprogrammed configurations (When used conjunction with CSEL1 there four possible pre-defined configurations choose from). CLK2 output. This optional clock CLK0, CLK0/2 CLK0/4. XOUT connection (2.25~3.63V) Crystal output pin. Connect when using FIN.
PDB/CLK1
CSEL0/CLK2
PROGRAMMING PARAMETERS
CLK[ Output Frequency FOUT FREF where CLK0= FREF, FREF/2 FVCO/P* CLK1= FREF, FREF/2 FVCO/P* CLK2= FREF, CLK0, CLK0/2 CLK0/4 6-bit Odd/Even divider. Modulation Magnitude (Spread Percentage) programmable modulation magnitudes choose from: Center Spread: ±0.125% ±2.0% ±0.125% steps Down Spread: -0.25% 4.0% 0.25% steps On/Off Control. Programmable Input/Output Programmable I/O's include: input CSEL[0:1] Configuration Selection input On/Off control input CLK[0:2] output Output Drive Strength Three optional drive strengths choose from: Low: Std: (default) High: 16mA
47745 Fremont Blvd., Fremont, California 94538 (510) 492-0990 (510) 492-0991 www.phaselink.com 7/27/07 Page
PicoEMI Programmable Spread Spectrum Clock
FUNCTIONAL DESCRIPTION
PL671-01 highly featured, very flexible, advanced programmable design high performance, low-power Spread Spectrum modulation applications. PL671-01 accepts fundamental input crystal 10MHz 40MHz reference clock input 1MHz 200MHz capable producing three modulated outputs 200MHz. This flexible design allows PL671-01 deliver generated frequency, (Crystal Clk) frequency CLK0, CLK1 and/or CLK2. Alternate configuration using CSEL0 CSEL1 allows device choose from different pre-defined settings providing range spread settings, drive levels outputs choose from. Some design features PL671-01 mentioned below. Programming PL671-01 fully programmable. equipped with 8-bit input frequency divider (R-Counter), 11-bit frequency feedback loop divider (M-Counter). output transferred 6-bit post Odd/Even divider (PCounter). output frequency determined following formula M)/(R*P). Modulation Magnitude Type PL671-01 provides following programmable capabilities Modulation Type Modulation Magnitude (Spread Percentage): Modulation Modulation Programming Type Magnitude Steps Center Spread ±0.125% thru ±2.00% ±0.125% Down Spread -0.25% thru -4.00% 0.25% output drive level each output independently programmed Drive (4mA), Standard Drive (8mA) High Drive (16mA). output frequency programmed 200MHz 3.3V (166MHz 2.5V). Power-Down Control (PDB) When activated (logic `0'), `Disables PLL, oscillator circuitry, counters, other active circuitry. Power Down mode consumes <10µA power. input incorporates pull resistor giving default condition logic "1". Configuration Selectors (CSEL[0:1]) PL671-01 capability programmed with distinct configurations toggle Fly" between these configurations using selector pads CSEL0 CSEL1. CSEL0 CSEL1 both incorporate pull resistor giving default condition logic "1". When CSEL0/CLK2 programmed CLK2, CSEL0 default Logic This means that programmable configurations available selected Fly" using CSEL1.
Modulation Rate PL671-01 modulation rate defined (Crystal Frequency) divided times R-counter, i.e. Modulation Rate 8R). rate changed choosing alternate R-Counter settings. Clock Outputs (CLK[0:2]) CLK0 main clock output. PL671-01 also programmed with additional clock outputs CLK1 CLK2. outputs CLK[0:2] configured described below: CLK0= FREF, FREF/2 FVCO/P* CLK1= FREF, FREF/2 FVCO/P* CLK2= FREF, CLK0, CLK0/2 CLK0/4
Where Reference (Crystal Clk) Frequency FOUT FREF
47745 Fremont Blvd., Fremont, California 94538 (510) 492-0990 (510) 492-0991 www.phaselink.com 7/27/07 Page
PicoEMI Programmable Spread Spectrum Clock
LAYOUT RECOMMENDATIONS
Evaluation Board EVB67101T-A0 SOT23-6
Evaluation Board EVB67101S-A0 SOP-8
following guidelines assist with performance optimized design:
Signal Integrity Termination Considerations
Keep traces short! Trace Inductor. With capacitive load this equals ringing! Long trace Transmission Line. Without proper termination this will cause reflections looks like ringing Design long traces "striplines" "microstrips" with defined impedance. Match trace side avoid reflections bouncing back forth.
Decoupling Power Supply Considerations
Place decoupling capacitors close possible pin(s) limit noise from power supply Multiple pins should decoupled separately best performance. Addition ferrite bead series with help prevent noise from other board sources Value decoupling capacitor frequency dependant. Typical values 0.1F designs using crystals 50MHz 0.01F designs using crystals 50MHz.
47745 Fremont Blvd., Fremont, California 94538 (510) 492-0990 (510) 492-0991 www.phaselink.com 7/27/07 Page
PicoEMI Programmable Spread Spectrum Clock
47745 Fremont Blvd., Fremont, California 94538 (510) 492-0990 (510) 492-0991 www.phaselink.com 7/27/07 Page
PicoEMI Programmable Spread Spectrum Clock
ELECTRICAL SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS PARAMETERS Supply Voltage Range Input Voltage Range Output Voltage Range Soldering Temperature (Green package) Data Retention Storage Temperature Ambient Operating Temperature* SYMBOL MIN. -0.5 -0.5 -0.5 MAX. +0.5 +0.5 UNITS Year
Exposure device under conditions beyond limits specified Maximum Ratings extended periods cause permanent damage device affect product reliability. These conditions represent stress rating only, functional operations device these other conditions above operational limits noted this specification implied. *Operating temperature guaranteed design. Parts tested commercial grade only.
SPECIFICATIONS
PARAMETERS Crystal Input Frequency(XIN) Input (FIN) Frequency Input (FIN) Signal Amplitude Input (FIN) Signal Amplitude Output Frequency Settling Time Output Enable Time Output Rise Time Output Fall Time Duty Cycle Cycle Cycle Jitter* CONDITIONS Fundamental Crystal =3.3V =2.5V Internally coupled (High Frequency) Internally coupled (Low Frequency) 3.3V <50MHz, 2.5V <40MHz =3.3V =2.5V power-up (after increases over 2.25V) Function; 15pF Load 15pF Load, 10/90% Standard Drive 15pF Load, 10/90% High Drive 15pF Load, 90/10% Standard Drive 15pF Load, 90/10% High Drive Over output frequency range 3.3V MIN. TYP. MAX. UNIT
Note: Jitter performance depends programming parameters.
47745 Fremont Blvd., Fremont, California 94538 (510) 492-0990 (510) 492-0991 www.phaselink.com 7/27/07 Page
PicoEMI Programmable Spread Spectrum Clock
SPECIFICATIONS
PARAMETERS Supply Current, Dynamic, with Loaded Outputs Operating Voltage Output Voltage Output High Voltage Output Current, Drive Output Current, Standard Drive Output Current, High Drive SYMBOL +4mA (Std. Drive) -4mA (Std. Drive) 0.4V, 2.4V 0.4V, 2.4V 0.4V, 2.4V CONDITIONS 27MHz, 3.3V, load=15pF, (PDB=1) PDB=0 2.25 MIN. TYP. MAX. 3.63 UNITS
CRYSTAL SPECIFICATIONS
PARAMETERS Fundamental Crystal Resonator Frequency Crystal Loading Rating Maximum Sustainable Drive Level Operating Drive Level Metal Crystal Small Crystal Shunt Capacitance Shunt Capacitance SYMBOL (xtal) MIN. TYP. MAX. UNITS
47745 Fremont Blvd., Fremont, California 94538 (510) 492-0990 (510) 492-0991 www.phaselink.com 7/27/07 Page
PicoEMI Programmable Spread Spectrum Clock
PACKAGE DRAWINGS (GREEN PACKAGE COMPLIANT)
MSOP-8L Symbol SOP-8L Symbol SOT23-6L Symbol Dimension Min. Max. 1.05 1.35 0.05 0.15 1.00 1.20 0.30 0.50 0.08 0.20 2.80 3.00 1.50 1.70 2.60 3.00 0.35 0.55 0.95 Dimension Min. Max. 1.35 1.75 0.10 0.25 1.25 1.50 0.33 0.53 0.19 0.27 4.80 5.00 3.80 4.00 5.80 6.20 0.40 0.89 1.27 Dimension Min. Max. -1.10 0.05 0.15 0.81 0.91 0.25 0.40 0.13 0.23 2.90 3.10 2.90 3.10 4.90 0.445 0.648 0.65
Pin1
47745 Fremont Blvd., Fremont, California 94538 (510) 492-0990 (510) 492-0991 www.phaselink.com 7/27/07 Page
PicoEMI Programmable Spread Spectrum Clock
ORDERING INFORMATION (GREEN PACKAGE COMPLIANT)
part ordering, please contact Sales Department: 47745 Fremont Blvd., Fremont, 94538, Tel: (510) 492-0990 Fax: (510) 492-0991
PART NUMBER
order number this device combination following: Part Number, Package Type Operating Temperature Range
PL671-01-XXX
PART NUMBER DIGIT Code
NONE= TUBE R=TAPE REEL TEMPERATURE C=COMMERCIAL (0°C 70°C) INDUSTRIAL (-40°C 85°C)
PACKAGE TYPE M=MSOP-8L S=SOP-8L T=SOT23-6L
PhaseLink will assign unique 3-digit code each approved programmed part number. Part/Order Number PL671-01-XXXMC PL671-01-XXXMC-R PL671-01-XXXSC PL671-01-XXXSC-R PL671-01-XXXTC-R
Marking F1XXX F1XXX P671-01 P671-01 F1XXX
Package Option 8-Pin MSOP (Tube) 8-Pin MSOP (Tape Reel) 8-Pin (Tube) 8-Pin (Tape Reel) 6-Pin SOT23 (Tape Reel)
Note: `XXX' designates marking identifier that, times, could independent part number.
PhaseLink Corporation, reserves right make changes products specifications, both time without notice. information furnished Phaselink believed accurate reliable. However, PhaseLink makes guarantee warranty concerning accuracy said information shall responsible loss damage whatever nature resulting from reliance upon this product. LIFE SUPPORT POLICY: PhaseLink's products authorized critical components life support devices systems without express written approval President PhaseLink Corporation.
Solder reflow profile available
47745 Fremont Blvd., Fremont, California 94538 (510) 492-0990 (510) 492-0991 www.phaselink.com 7/27/07 Page
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