MK2732-06

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MK2732-06 - MK2732-06

MK2732-06
PHASE NOISE VCXO MULTIPLIER
MK2732-06 low-cost, low-jitter, high-performance VCXO clock synthesizer designed replace expensive discrete VCXOs multipliers. on-chip Voltage Controlled Crystal Oscillator (VCXO) accepts input voltage cause output clocks vary ±100 ppm. Using ICS's patented VCXO analog Phase-Locked Loop (PLL) techniques, device uses inexpensive pullable crystal input produce three output clocks. manufactures largest variety clocks Set-top boxes Communications. Consult eliminate VCXOs, crystals, oscillators andbuffers from your board.
Features
Packaged 16-pin TSSOP Available (lead) free package xDSL chipsets MPEG2 decoders Replaces VCXO multiplier Uses inexpensive pullable crystal On-chip patented VCXO with pull range (±100 ppm) minimum
VCXO tuning voltage Zero synthesis error clocks Full CMOS output swings with output drive
capability levels
Advanced, low-power, sub-micron CMOS process operating voltage core, ability output
clocks easy interface.
Available commercial industrial temperature
versions
Block Diagram
VDD5 VDDIO
PLL/Clock Synthesis Circuitry CLK1
pullable crystal Voltage Controlled Crystal Oscillator
CLK2
REFCLK
(all outputs)
2732-06 Integrated Circuit Systems
Race Street, Jose,
Revision 091004 97-12
MK2732-06 PHASE NOISE VCXO MULTIPLIER
Assignment
VDD5 VDD5 REFCLK CLK2 VDDIO CLK1
Clock Select Table
Input CLK1 CLK2 REFCLK
16-pin (173 mil) TSSOP
13.248 13.248 13.248 13.248 13.5 13.5 13.5 Test mode 13.5
52.992 13.248 13.248 52.992
35.238 35.238 35.238 35.238
connect directly ground M=leave unconnected (floating) connect directly VDDIO off=output stopped
Descriptions
Number Name VDD5 CLK1 VDDIO CLK2 REFCLK Type Power Power Input Output Power Output Output Description Crystal connection. Connect pullable crystal 14.318 MHz. Core VDD. Connect Voltage input VCXO. Zero signal which controls frequency VCXO. Connect ground. Select input Selects outputs table above. exceed VDDIO. Output Enable. Tri-states outputs when low. exceed VDDIO. Clock output table above. Amplitude VDDIO. Select input Selects outputs table above. exceed VDDIO. Input output VDD. Connect 3.3. Clock amplitude matches this voltage. Clock output table above. Amplitude VDDIO. Nothing connected internally this pin. Buffered crystal VCXO clock. Crystal connection. Connect pullable crystal MHz.
Key: tri-level input; analog voltage input; crystal pins
2732-06 Integrated Circuit Systems
Stree Jose,
Revision 091004
MK2732-06 PHASE NOISE VCXO MULTIPLIER
External Component Selection
MK2732-06 requires minimum number external components proper operation.
Crystal Tuning Load Capacitors
crystal traces should include pads small fixed capacitors, between ground, another between ground. Stuffing these capacitors optional. need these capacitors determined system prototype evaluation, influenced particular crystal used (manufacture frequency) layout. typical required capacitor value determine need value crystal adjustment capacitors, will need board your final layout, frequency counter capable about resolution accuracy, power supplies, some samples crystals which plan production, along with measured initial accuracy each crystal specified crystal load capacitance, determine value crystal capacitors: Connect MK2732-06 Connect MK2732-06 second power supply. Adjust voltage Measure record frequency output. Adjust voltage Measure record frequency same output. calculate centering error:
Decoupling Capacitor
decoupling capacitor 0.01 must connected between VDD5 pins VDDIO pins close device possible. optimum device performance, decoupling capacitor should mounted component side PCB. Avoid vias decoupling circuit.
Series Termination Resistor
When trace between clock outputs loads over inch, series termination should used. series terminate trace commonly used trace impedance) place resistor series with clock line, close clock output possible. nominal impedance clock output
Quartz Crystal
MK2732-06 VCXO function consists external crystal integrated VCXO oscillator circuit. assure best system performance (frequency pull range) reliability, crystal device with recommended parameters described application note MAN05) must used, layout guidelines discussed following section must followed. frequency oscillation quartz crystal determined "cut" load capacitors connected MK2732-06 incorporates on-chip variable load capacitors that "pull" (change) frequency crystal. crystal specified with MK2732-06 designed have zero frequency error when total on-chip stray capacitance external crystal must connected close chip possible should same side theMK2732-06. There should vias between crystal pins device pins. There should signal traces underneath close crystal.
3.0V Error error xtal
Where: ftarget nominal crystal frequency errorxtal =actual initial accuracy ppm) crystal being measured centering error less than ppm, adjustment needed. centering error more than negative, board excessive stray capacitance layout should considered reduce stray capacitance. (Alternately, crystal re-specified higher load capacitance. Contact details.) centering
2732-06 Integrated Circuit Systems
Stree Jose,
Revision 091004
MK2732-06 PHASE NOISE VCXO MULTIPLIER
error more than positive, identical fixed centering capacitors from each crystal ground. value each these caps given External Capacitor (centering error)/(trim sensitivity)
Trim sensitivity parameter which supplied your crystal vendor. know value, assume ppm/pF. After changes, repeat measurement verify that remaining error acceptably (typically less than ppm).
Absolute Maximum Ratings
Stresses above ratings listed below cause permanent damage MK2732-06. These ratings, which standard values commercially rated parts, stress ratings only. Functional operation device these other conditions above those indicated operational sections specifications implied. Exposure absolute maximum rating conditions extended periods affect product reliability. Electrical parameters guaranteed only over recommended operating temperature range.
Item
Supply Voltage, Inputs Outputs Ambient Operating Temperature, Commercial version Ambient Operating Temperature, Industrial version Storage Temperature Junction Temperature Soldering Temperature
Rating
-0.5 VDD+0.5 +150
Recommended Operation Conditions
Parameter
Ambient Operating Temperature Power Supply Voltage (measured respect GND) Reference crystal parameters
Min.
+4.75
Typ.
Max.
+5.25
Units
Refer MAN05
2732-06 Integrated Circuit Systems
Stree Jose,
Revision 091004
MK2732-06 PHASE NOISE VCXO MULTIPLIER
Electrical Characteristics
Unless noted otherwise, VDD5=5.0 VDDIO=3.3 Ambient temperature +70°C
Parameter
Core Operating Voltage Operating Voltage Operating Supply Current Operating Supply Current Input High Voltage Input Voltage Input High Voltage Input Voltage Input High Voltage Input Voltage Output High Voltage Output Voltage Output High Voltage Short Circuit Current Input Capacitance Frequency Synthesis Error VIN, VCXO Control Voltage
Symbol
VDD5 VDDIO IDDIO
Conditions
Min.
4.75 3.13
Typ.
Max.
5.25 5.25
Units
load load only only Binary input, Binary input, Trinary inputs, Trinary inputs, CMOS Level, Each output clocks VDD-0.4 VDD-0.5
2732-06 Integrated Circuit Systems
Stree Jose,
Revision 091004
MK2732-06 PHASE NOISE VCXO MULTIPLIER
Electrical Characteristics
Unless noted otherwise, VDD5=5.0 VDDIO=3.3 Ambient Temperature +70°
Parameter
Crystal Input Frequency Output Rise Time Output Fall Time Output Clock Duty Cycle Maximum Absolute Jitter, short term Phase Noise, relative carrier Output Pullability
Symbol
Conditions
VDDIO/2
Min.
Typ.
Max.
Units
dBc/Hz
±150
offset ±100
-115
2732-06 Integrated Circuit Systems
Stree Jose,
Revision 091004
MK2732-06 PHASE NOISE VCXO MULTIPLIER
Package Outline Package Dimensions (16-pin TSSOP, Mil. Body)
Package dimensions kept current with JEDEC Publication
Millimeters Symbol
INDEX AREA
Inches
-1.20 0.05 0.15 0.80 1.05 0.19 0.30 0.09 0.20 4.90 6.40 BASIC 4.30 4.50 0.65 Basic 0.45 0.75 -0.10
-0.047 0.002 0.006 0.032 0.041 0.007 0.012 0.0035 0.008 0.193 0.201 0.252 BASIC 0.169 0.177 0.0256 Basic 0.018 0.030 -0.004
SEATING PLANE
Ordering Information
Part Order Number
MK2732-06G MK2732-06GTR MK2732-06GI MK2732-06GITR MK2732-06GLF MK2732-06GLFTR MK2732-06GILF MK2732-06GILFTR 27326ILF 27326LF MK27326I
Marking
MK27326
Shipping Packaging
Tubes Tape Reel Tubes Tape Reel Tubes Tape Reel Tubes Tape Reel
Package
16-pin TSSOP 16-pin TSSOP 16-pin TSSOP 16-pin TSSOP 16-pin TSSOP 16-pin TSSOP 16-pin TSSOP 16-pin TSSOP
Temperature
While information presented herein been checked both accuracy reliability, Integrated Circuit Systems (ICS) assumes responsibility either infringement patents other rights third parties, which would result from use. other circuits, patents, licenses implied. This product intended normal commercial applications. other applications such those requiring extended temperature range, high reliability, other extraordinary environmental requirements recommended without additional processing ICS. reserves right change circuitry specifications without notice. does authorize warrant product life support devices critical medical instruments.
2732-06 Integrated Circuit Systems
Stree Jose,
Revision 091004

MK2732-06

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