Rainbow Electronics DS4625 User Manual
General Description
The DS4625 is a dual-output, low-jitter clock oscillator
capable of producing frequency output pair combinations ranging from 100MHz to 625MHz. The device
combines an AT-cut crystal, an oscillator, and a lownoise phase-locked loop (PLL) in a 5.0mm x 3.2mm
surface-mount LCCC package. Standard frequency
options are listed in the
Ordering Information/Selector
Guide
table. For custom frequency options, contact the
factory at: Custom.Oscillators@maxim-ic.com
.
The DS4625 provides dual, low-voltage, positive emitter-coupled logic (LVPECL) clock output drivers. The
output drivers can be enabled and disabled through
the OE pin, which is an active-high CMOS input that
has an internal pullup resistor. When high, both output
pairs are enabled.
The device operates from a single +3.3V ±10% supply.
The operating temperature range is -40°C to +70°C.
Applications
XGMII Clock Oscillator
InfiniBand™
SAS/SATA
PCIe
®
1GbE/10GbE
Features
♦ Standard Clock Output Frequencies: 100MHz,
125MHz, 150MHz, 156.25MHz, and 200MHz
♦ Phase Jitter < 0.7ps RMS (typical) from 12kHz to
20MHz
♦ LVPECL Output
♦ +3.3V ±10% Operating Voltage
♦ -40°C to +70°C Temperature Range
♦ Excellent Power-Supply Noise Rejection
♦ 5.0mm x 3.2mm Ceramic LCCC Package
♦ Output Enable/Disable
DS4625
3.3V Dual-Output LVPECL Clock Oscillator
________________________________________________________________
Maxim Integrated Products
1
Ordering Information/Selector Guide
19-4558; Rev 0; 4/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
+
Denotes a lead(Pb)-free/RoHS-compliant package. The lead finish is JESD97 category e4 (Au over Ni) and is compatible with both
lead-based and lead-free soldering processes.
*
Standard frequency options. Contact the factory at Custom.Oscillators@maxim-ic.com for custom frequencies.
PART TEMP RANGE
FREQUENCY (OP1:ON1)
(MHz) (f
C
)*
FREQUENCY (OP2:ON2)
(MHz) (fC)*
PIN-PACKAGE
TOP
MARK
DS4625P+100/150 -40°C to +70°C 100.000 150.000 10 LCCC 6AC
DS4625P+125/125 -40°C to +70°C 125.000 125.000 10 LCCC 6BB
DS4625P+125/156 -40°C to +70°C 125.000 156.250 10 LCCC 6BD
DS4625P+150/150 -40°C to +70°C 150.000 150.000 10 LCCC 6CC
DS4625P+150/200 -40°C to +70°C 150.000 200.000 10 LCCC 6CE
Pin Configuration and Typical Application Circuit appear at end of data sheet.
InfiniBand is a trademark and service mark of the InfiniBand Trade Association.
PCIe is a registered trademark of PCI-SIG Corp.
DS4625
3.3V Dual-Output LVPECL Clock Oscillator
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
(All voltages referenced to ground unless otherwise noted.)
Voltage Range on Any Pin Relative to Ground......-0.3V to +4.0V
Operating Temperature Range ...........................-40°C to +70°C
Junction Temperature......................................................+150°C
θJA...................................................................+90°C/W (Note 1)
Storage Temperature Range ...............................-55°C to +85°C
Soldering Temperature (3 passes max of reflow)......Refer to the
IPC/JEDEC J-STD-020 Specification.
ELECTRICAL CHARACTERISTICS
(VCC= +2.97V to +3.63V, TA= -40°C to +70°C, typical values are at VCC= +3.3V and TA= +25°C, unless otherwise noted.) (Notes 2, 3)
Note 1: Package thermal resistances were obtained using a two-layer board. For detailed information on package thermal consider-
ations, refer to www.maxim-ic.com/thermal-tutorial
.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Voltage Range VCC 2.97 3.3 3.63 V
Input-Voltage High (OE) V
Input-Voltage Low (OE) VIL 0
IH
0.7 x
V
CC
VCC V
0.3 x
V
CC
V
PARAMETER S YMBOL CONDITIONS MIN TYP MAX UNITS
I
LVPECL, output unloaded 65 90 mA
CC_PU
Operating Current
Output Frequency
Startup Time t
Frequency Stability f
Frequency Stability Over
Temperature w ith In itial
Tolerance
Initial Tolerance f
Frequency Change Due to V
Frequency Change Due to Load
Variation
Aging (15 Years) f
OE Pullup Resistance RPU TA= +25°C 70 100 130 k
CC
I
LVPECL, output loaded 120 140 mA
CC_PL
I
f
f
V
CC_O EZ
f
OUT1
f
OUT2
(Note 4) 1.0 ms
START
TOTAL/fC
V
TEMP/fC
INITIAL/fCVCC
f
V
VCC
±10% variation in termination resistance ±1 ppm
LOAD/fC
AGING/fC
-7 +7 ppm
= VIL 80 115 mA
OE
V
= VIH f
OE
Temperature, aging, load, supply, and
initial tolerance (Note 5)
= +3.3V -35 +35 ppm
CC
= +3.3V, TA= +25°C ±20 ppm
= +3.3V ±10%, TA= +25°C -3 +3 ppm/V
CC
-50 +50 ppm
MHz
C
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