200MHZ, JITTER, LVPECL FREQUENCY SYNTHESIZER FEATURES Fully
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ICS8431-01
200MHZ, JITTER, LVPECL FREQUENCY SYNTHESIZER
FEATURES
Fully integrated Differential 3.3V LVPECL output 200MHz output frequency Crystal oscillator interface Spread Spectrum Clocking (SSC) fixed 1/2% modulation environments requiring ultra LVTTL LVCMOS control inputs bypass modes supporting in-circuit testing on-chip functional block characterization lead SOIC cycle-to-cycle jitter
GENERAL DESCRIPTION
ICS8431-01 general purpose clock frequency synthesizer member HiPerClockSHiPerClockSfamily High Performance Clock Solutions from ICS. ICS8431-01 consists independent bandwidth timing channel. 16.666MHz crystal used input on-chip oscillator. dividers configured produce fixed output frequency 200MHz.
Programmable features ICS8431-01 support four operational modes. four modes spread spectrum clocking (SSC), non-spread spectrum clock test modes which controlled SSC_CTL[1:0] pins. mode output clock modulated order achieve reduction EMI. bypass test modes disconnected source differential output allowing external source connnected TEST_I/O pin. This useful incircuit testing allows differential output driven lower frequency throughout system clock tree. other bypass mode oscillator divider used source both dividers. This useful characterizing oscillator internal dividers.
BLOCK DIAGRAM
XTAL1 XTAL2
ASSIGNMENT
SSC_CTL0 SSC_CTL1 TEST_I/O VDDI XTAL2 XTAL1 VDDA VDDO FOUT nFOUT
PHASE DETECTOR
FOUT nFOUT
ICS8431-01
TEST_I/O SSC_CTL0 SSC_CTL1 Control Logic
28-Lead SOIC Package View
Preliminary Information presented herein represents product prototyping pre-production. noted characteristics based initial product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves right change circuitry specifications without notice.
8431-01
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REV. FEBRUARY 2001
ICS8431-01
200MHZ, JITTER, LVPECL FREQUENCY SYNTHESIZER
Type Unused Input Power Input Output Power Power Output Power Power Power Input Power Pullup Description Unused pins. control pins. LVTTL/LVCMOS interface levels. Ground core test output. Programmed defined Table Function Table. Power supply core test output. Ground output. These differential outputs main output drivers synthesizer. They compatible with terminated positive referenced LVPECL logic. Power supply output. ground pin. power supply pin. Crystal oscillator input. Input core power supply pin. Connect 3.3V.
TABLE DESCRIPTIONS
Number Name SSC_CTL0, SSC_CTL1 TEST_ nFOUT, FOUT VDDO VDDA XTAL1, XTAL2 VDDI
TABLE CHARACTERISTICS
Symbol RPULLUP RPULLDOWN Parameter Input Capacitance Input Pullup Resistor Input Pulldown Resistor XTAL1, XTAL2 SSC_CTL0, SSC_CTL1 Test Conditions Minimum Typical Maximum Units
TABLE CONTROL INPUTS FUNCTION TABLE
Inputs SSC_CTL1 SSC_CTL0 TEST_I/O Source Internal External Outputs Operational Modes FOUT, TEST_I/O nFOUT fXTAL fXTAL bypass; Oscillator, oscillator, Disabled dividers test mode. NOTE Enabled 200MHz Hi-Z Default SSC; Modulation Factor Percent Bypass Mode, Disabled Test Input (1MHz Test 200MHz) Disabled 200MHz Hi-Z Modulation
NOTE Used house debug characterization.
8431-01
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REV. FEBRUARY 2001
ICS8431-01
200MHZ, JITTER, LVPECL FREQUENCY SYNTHESIZER
4.6V -0.5V 0.5V -0.5V VDDO 0.5V 70°C -65°C 150°C
ABSOLUTE MAXIMUM RATINGS
Supply Voltage Inputs Outputs Ambient Operating Temperature Storage Temperature
Stresses beyond those listed under Absolute Maximum Ratings cause permanent damage device. These ratings stress specifications only functional operation product these condition conditions beyond those listed Characteristics Characteristics implied. Exposure absolute maximum rating conditions extended periods affect product reliability.
TABLE POWER SUPPLY CHARACTERISTICS, VDDA VDDO 3.3V±5%, 70°C
Symbol VDDO VDDA VDDI Parameter Output Power Supply Voltage Output Power Supply Voltage Analog Power Supply Voltage Input Power Supply Voltage Test Conditions Minimum 3.135 3.135 3.135 3.135 Typical Maximum 3.465 3.465 3.465 3.465 Units
TABLE LVCMOS LVTTL CHARACTERISTICS, VDDA VDDO 3.3V±5%, 70°C
Symbol Input Parameter SSC_CTL0, High Voltage SSC_CTL1, TEST_I/O SSC_CTL0, Voltage SSC_CTL1, TEST_I/O SSC_CTL0, High Current SSC_CTL1, TEST_IO SSC_CTL0, Current SSC_CTL1 TEST_IO Test Conditions 3.135V 3.465V 3.135V 3.465V Minimum Typical Maximum 3.765 Units
Input
-0.3
Input
3.465V 3.465V, 3.465V, -150
Input
TABLE LVPECL CHARACTERISTICS, VDDA VDDO 3.3V±5%, 70°C
Symbol VSWING Parameter Output High Voltage; NOTE Output Voltage; NOTE Peak-to-Peak Output Voltage Swing Output High Current Test Conditions VDDI VDDO 3.3V VDDI VDDO 3.3V Minimum Typical Maximum Units
Output Current NOTE These values VDDO equal 3.3V. Output levels will vary with VDDO. NOTE Output terminated with VDDO
8431-01
www.icst.com
REV. FEBRUARY 2001
ICS8431-01
200MHZ, JITTER, LVPECL FREQUENCY SYNTHESIZER
Test Conditions Minimum Type 16.666 -100 +100 year @25°C Maximum Units
TABLE CRYSTAL CHARACTERISTICS
Parameter Crystal Mode Oscillation Frequency Frequency Tolerance Frequency Stability Drive Level Equivalent Series Resistance (ESR) Shunt Capacitiance Load Capacitiance Series Inductance Operating Temperature Range Aging Fundamental
TABLE CHARACTERISTICS, VDDA VDDO 3.3V±5%, 70°C
Symbol tPERIOD tjit Fxtal tLOCK tSTABLE oscTOL Parameter Output Period; NOTE Peak Jitter (Shor Cycle); NOTE Output Duty Cycle; NOTE Output Rise Time Output Fall Time ystal Input Range Modulation Frequency Modulation Factor Lock Time Power-up Stable Clock Output ystal Oscillator Tolerance 1000 Test Conditions FOUT FOUT FOUT Minimum 4995 Typical Maximum 5005 33.33 Units
NOTE Spread spectrum clocking enabled.
8431-01
www.icst.com
REV. FEBRUARY 2001
ICS8431-01
200MHZ, JITTER, LVPECL FREQUENCY SYNTHESIZER
PACKAGE OUTLINE SUFFIX
SEATING PLANE
(.004)
TABLE PACKAGE DIMENSIONS
Millimeters SYMBOL -0.10 2.05 0.33 0.18 17.70 7.40 2.65 -2.55 0.51 0.32 18.40 7.60 1.27 BASIC 10.00 0.25 0.40 10.65 0.75 1.27 -.0040 .081 .013 .007 .697 .291 .104 -.100 .020 .013 .724 .299 Inches
.050 BASIC .394 .010 .016 .419 .029 .050
REFERENCE DOCUMENT: JEDEC PUBLICATION MS-013, MO-119
8431-01
www.icst.com
REV. FEBRUARY 2001
ICS8431-01
200MHZ, JITTER, LVPECL FREQUENCY SYNTHESIZER
Marking ICS8431AM-01 ICS8431AM-01 Package Lead SOIC Lead SOIC Tape Reel Count Tube 1000 Temperature 70°C 70°C
TABLE ORDERING INFORMATION
Part/Order Number ICS8431AM-01 ICS8431AM-01T
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. 8431-01
www.icst.com
REV. FEBRUARY 2001
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