MK2732-05 cost, jitter, high performance VCXO clock synthesizer design
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MK2732-05 Phase Noise VCXO+Multiplier
MK2732-05 cost, 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/MicroClock's patented VCXO analog Phase-Locked Loop (PLL) techniques, device uses inexpensive 14.318 pullable crystal input produce output clocks. manufactures largest variety Set-Top multimedia clock synthesizers applications. Consult eliminate VCXOs, crystals oscillators from your board.
Packaged narrow SOIC Replaces VCXO multiplier Uses inexpensive pullable crystal Output clocks On-chip patented VCXO with pull range (±100 ppm) minimum VCXO tuning voltage Zero synthesis error both clocks output drive capability levels Advanced, power, sub-micron CMOS process operating voltage core, ability output clocks 3.3V
Block Diagram
VDD5 Output Buffer CLK1 VDDIO
S2:S0 10-14 pullable crystal
Voltage Controlled Crystal Oscillator
PLL/Clock Synthesis Circuitry
Output Buffer
CLK2
Revision 122799 Printed 11/16/00 Integrated Circuit Systems, Inc. Race Street Jose 295-9800 www.icst.com
2732-05
MK2732-05 Phase Noise VCXO+Multiplier
Assignment Clock Select Table
CLK2 VDDIO CLK1
CLK1 REF/4 Test CLK2 REF/2 x0.666 x2.6666 x1.5 x1.3333 Test
MK2732-05
VDD5 VDD5
narrow (150 mil) SOIC Descriptions
Number Name VDD5 CLK1 VDDIO CLK2 Type
0=connect directly GND, 1=connect directly VDDIO, OFF=output stopped low.
Description Crystal connection. Connect pullable crystal 10-14.318 MHz. Core VDD. Connect +5V. 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 +3.3V +5V. Clock amplitude matches this voltage. Clock Output table above. Amplitude VDDIO. Select input Selects outputs table above. exceed VDDIO. Nothing connected internally this pin. Crystal connection. Connect pullable crystal 10-14.318 MHz.
Key: Input with internal pull-up resistor; tri-level input; output; power supply connection; analog voltage input; crystal pins.
External Components
MK2732-05 requires minimum number external components proper operation. Decoupling capacitors 0.1µF should connected between VDD5 pins VDDIO pins close MK2732-05 possible. series termination resistor used each clock output. input crystal must connected close chip possible. input crystal should fundamental mode, parallel resonant, pullable, cut. crystal with load capacitance recommended. Consult ICS/MicroClock recommended suppliers. IMPORTANT consult application note MAN05 layout guidelines. Revision 122799 Printed 11/16/00 Integrated Circuit Systems, Inc. Race Street Jose 295-9800 www.icst.com
2732-05
MK2732-05 Phase Noise VCXO+Multiplier
Electrical Specifications
Parameter Supply voltage, Inputs Clock Outputs Ambient Operating Temperature Soldering Temperature Storage temperature Core Operating Voltage, VDD5 Operating Voltage, VDDIO Input High Voltage, VIH, only Input Voltage, VIL, only Input High Voltage, VIH, binary inputs Input Voltage, VIL, binary inputs Input High Voltage, VIH, trinary input Input Voltage, VIL, trinary input Output High Voltage, Output Voltage, Output High Voltage, VOH, CMOS level Operating Supply Current, Short Circuit Current Input Capacitance Frequency synthesis error VIN, VCXO control voltage Input Crystal Frequency Output Clock Frequency Output Clock Rise Time Output Clock Fall Time Output Clock Duty Cycle Maximum Absolute Jitter Phase Noise, relative carrier Output pullability, note Notes: Conditions Referenced Referenced seconds 4.75 3.15 IOH=-25mA IOL=25mA IOH=-8mA Load Each output S2:S0, Both clocks VDDIO-0.5 VDDIO-0.4 ±100 2.0V 0.8V VDDIO/2 offset 14.31818 85.9 ±100 -115 ±100 Minimum Typical Maximum VDD+0.5 5.25 VDD5 Units dBc/Hz
ABSOLUTE MAXIMUM RATINGS (note
-0.5
CHARACTERISTICS (VDD5 5.0V unless noted)
CHARACTERISTICS (VDD5 5.0V unless noted)
Stresses beyond those listed under Absolute Maximum Ratings could cause permanent damage device. Prolonged exposure levels above operating limits below Absolute Maximums affect device reliability. With ICS/MicroClock approved pullable crystal.
Pullable Crystal Specifications:
Correlation (load) Capacitance CO/C1 Operating Temperature Initial Accuracey Temperature plus Aging Stability
2732-05
Revision 122799 Printed 11/16/00 Integrated Circuit Systems, Inc. Race Street Jose 295-9800 www.icst.com
MK2732-05 Phase Noise VCXO+Multiplier
Package Outline Package Dimensions
(For current dimensional specifications, JEDEC Publication 95.)
SOIC narrow
Symbol
Ordering Information
Part/Order Number MK2732-05S MK2732-05STR
Inches 0.0532 0.0688 0.0040 0.0098 0.0130 0.0200 0.075 0.098 0.3859 0.3937 0.1497 0.1574 .050 0.2284 0.2440 0.0099 0.0195 0.0160 0.0500
Millimeters 1.35 1.75 0.10 0.24 0.33 0.51 1.91 2.40 9.80 10.00 3.80 4.00 1.27 5.80 6.20 0.25 0.50 0.41 1.27
Marking MK2732-05S MK2732-05S
Shipping packaging tubes tape reel
Package SOIC SOIC
Temperature 0-70 0-70
Revision history: Version Revision 10308 12078 4289 12279 Comments Original CLK1 CLK2 functions switched address, changed from x0.75 x0.666 address, changed name VDD3.3 VDDIO. Added jitter spec, changed VDDIO, lowered IDD. Added dimension, changed address. Eliminated "Preliminary". Changed JEDEC dimensions. Changed ±5%. Added Pullable Crystal Specifications.
While information presented herein been checked both accuracy reliability, Integrated Circuit Systems, Incorporated (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.
Revision 122799 Printed 11/16/00 Integrated Circuit Systems, Inc. Race Street Jose 295-9800 www.icst.com
2732-05
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