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Rev 0; 7/07
DS4-XO Series Crystal Oscillators
General Description
The DS4125, DS4155, DS4156, DS4160, DS4311, DS4312, DS4622, and DS4776 ceramic surface-mount crystal oscillators are part of Maxim's DS4-XO series crystal oscillators family. These devices offer output frequencies at 125MHz, 155.52MHz, 156.25MHz, 160MHz, 311.04MHz, 312.5MHz, 622.08MHz, and 77.76MHz. The clock oscillators are suited for systems with tight tolerances because of the jitter, phase noise, and stability performance. The small package provides a format made for applications where PCB space is critical. These clock oscillators are crystal based and use a fundamental crystal with PLL technology to provide the final output frequencies. Each device is offered with LVDS or LVPECL output types. The output enable pin is active-high logic. These clock oscillators have very low phase jitter and phase noise. Typical phase jitter is < 0.6psRMS from 12kHz to 20MHz. The devices are designed to operate with a 3.3V 5% supply voltage, and are available in a 5.0mm x 3.2mm x 1.49mm, 10-pin LCCC surface-mount ceramic package. LVDS or LVPECL Output Types 3.3V Operating Voltage 5.0mm x 3.2mm x 1.49mm, 10-Pin LCCC Ceramic Package -40C to +85C Operating Temperature Range Lead Free/RoHS Compliant
Features
< 0.6psRMS from 12kHz to 20MHz Jitter
DS4125/DS4155/DS4156/DS4160/DS4311/DS4312/DS4622/DS4776
Ordering Information
PART DS4125D+ DS4125P+ DS4155D+ DS4155P+ DS4156D+ DS4156P+ DS4160D+ DS4160P+ DS4311D+ DS4311P+ DS4312D+ DS4312P+ DS4622D+ DS4622P+ DS4776D+ DS4776P+ TEMP RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C PIN-PACKAGE 10 LCCC 10 LCCC 10 LCCC 10 LCCC 10 LCCC 10 LCCC 10 LCCC 10 LCCC 10 LCCC 10 LCCC 10 LCCC 10 LCCC 10 LCCC 10 LCCC 10 LCCC 10 LCCC
Applications
Infiniband BPON/GPON Ethernet 10GbE SONET/SDH
Pin Configuration and Selector Guide appear at end of data sheet.
+Denotes a lead-free package. The lead finish is JESD97 category e4 (Au over Ni) and is compatible with both lead-based and lead-free soldering processes.
Typical Operating Circuits
VCC 0.1F 0.01F
OUTP 0.1F 0.01F
VCC
OUTP 50
DS4125
OE GND OUTN
100 OE GND
DS4125
50 OUTN
PECL_BIAS VCC - 2.0V
LVDS OPTION
LVPECL OPTION
________________________________________________________________ Maxim Integrated Products
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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.
DS4-XO Series Crystal Oscillators
DS4125/DS4155/DS4156/DS4160/DS4311/DS4312/DS4622/DS4776
ABSOLUTE MAXIMUM RATINGS
Power-Supply Voltage (VCC) .......................................-0.3V, +4V Operating Temperature Range ...........................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range ...............................-55C to +85C Soldering Temperature Profile (3 passes max of reflow).................See IPC/JEDEC J-STD-020 Specification
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.
ELECTRICAL CHARACTERISTICS
(VCC = 3.135V to 3.465V, TA = -40C to +85C, unless otherwise noted.)
PARAMETER Operating Voltage Range Operating Current Output Frequency Oscillator Startup Time Frequency Stability Frequency Stability Over Temperature with Initial Tolerance Initial Tolerance Frequency Change Due to VCC Frequency Change Due to Load Variation Aging (15 Years) SYMBOL VCC ICC_D ICC_PU ICC_PI fOUT tSTARTUP fTOTAL fTEMP fINITIAL fVCC fLOAD fAGING Integrated phase RMS; 12kHz to 5MHz, VCC = 3.3V, TA = +25C Jitter JRMS Integrated phase RMS; 12kHz to 20MHz, VCC = 3.3V, TA = +25C Integrated phase RMS; 12kHz to 80MHz, VCC = 3.3V, TA = +25C Input-Voltage High (OE) Input-Voltage Low (OE) Input Leakage (OE) VIH VIL ILEAK (Note 1) (Note 1) GND OE VCC 0.7 x VCC 0 -50 (Note 2) Over temperature range, aging, load, supply, and initial tolerance (Note 3) VCC = 3.3V VCC = 3.3V, TA = +25C VCC = 3.3V 5% 10% variation in termination resistance -7 < 0.5 < 0.6 < 1.0 VCC 0.3 x VCC +5.0 V V A ps -3 1 +7 -50 -35 20 +3 fNOM (Note 1) LVDS, output loaded or unloaded LVPECL, output unloaded LVPECL, output load 50 at VCC - 2.0V CONDITIONS MIN 3.135 TYP 3.3 50 45 70 fNOM 50 +50 +35 MAX 3.465 70 65 95 MHz ms ppm ppm ppm ppm/V ppm ppm mA UNITS V
2
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DS4-XO Series Crystal Oscillators
ELECTRICAL CHARACTERISTICS (continued)
(VCC = 3.135V to 3.465V, TA = -40C to +85C, unless otherwise noted.)
PARAMETER LVDS Output High Voltage Output Low Voltage Differential Output Voltage Output Common-Mode Voltage Variation Change in Differential Magnitude or Complementary Inputs Offset Output Voltage Differential Output Impedance Output Current Output Rise Time (Differential) Output Fall Time (Differential) Duty Cycle Propagation Delay from OE Going LOW to Logical 1 at OUTP Propagation Delay from OE Going HIGH to Output Active LVPECL Output High Voltage Output Low Voltage Differential Voltage Rise Time Fall Time Duty Cycle Propagation Delay from OE Going LOW to Output High Impedance Propagation Delay from OE Going HIGH to Output Active VOH VOL VDIFF_PECL tR-PECL tF-PECL DCYCLE_PECL tPAZ tPZA 45 Output connected to 50 at VCC - 2.0V Output connected to 50 at VCC - 2.0V Output connected to 50 at VCC - 2.0V at PECL_BIAS at PECL_BIAS at PECL_BIAS VCC 1.085 VCC 1.825 0.595 0.710 200 200 55 200 200 VCC 0.88 VCC 1.62 V V V ps ps % ns ns VOHLVDSO VOLLVDSO |VODLVDSO| VLVDSOCOM |VODLVDSO| VOFFLVDSO ROLVDSO LVSSLVDSO LLVDSO tRLVDSO tFLVDSO DCYCLE_LVDS tPA1 tP1A OUTN or OUTP shorted to ground and measure the current in the shorting path OUTN or OUTP shorted together 20% to 80% 80% to 20% 45 6.5 175 175 55 200 200 ps ps % ns ns 100 100 100 100 100 100 differential load (Note 1) differential load (Note 1) differential load differential load differential load differential load (Note 1) 1.125 80 0.925 250 425 150 25 1.275 140 40 mA 1.475 V V mV mV mV V SYMBOL CONDITIONS MIN TYP MAX UNITS
DS4125/DS4155/DS4156/DS4160/DS4311/DS4312/DS4622/DS4776
Note 1: All voltages referenced to ground. Note 2: AC parameters are guaranteed by design and not production tested. Note 3: Frequency stability is calculated as: fTOTAL + fINITIAL + fTEMP + (fVCC x 0.165) + fLOAD + fAGING.
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DS4-XO Series Crystal Oscillators
DS4125/DS4155/DS4156/DS4160/DS4311/DS4312/DS4622/DS4776
SINGLE-SIDEBAND PHASE NOISE AT f0 = fNOM
fM = 10Hz 100Hz 1kHz 10kHz 100kHz 1MHz 10MHz 20MHz SINGLE-SIDEBAND PHASE NOISE AT f0 = fNOM (dBc/Hz) 77.76MHz -60 -95 -122 -126 -131 -143 -149 -153 125.00MHz -70 -100 -120 -120 -125 -142 -149 -153 155.52MHz -70 -100 -120 -120 -125 -142 -149 -153 156.25MHz -70 -100 -120 -120 -125 -142 -149 -153 160.00MHz -70 -100 -120 -120 -125 -142 -149 -153 311.04MHz -65 -95 -113 -113 -118 -137 -149 -153 312.5MHz -65 -95 -113 -113 -118 -137 -149 -153 622.08MHz -60 -90 -107 -107 -113 -131 -147 -150
Pin Description
PIN 1 2, 7-10 3 4 5 6 -- NAME OE N.C. GND OUTP OUTN VCC EP No Connection. Must be floated. Ground Positive Output for LVPECL or LVDS Negative Output for LVPECL or LVDS Supply Voltage Exposed Paddle. The exposed pad must be used for thermal relief. This pad can be connected to ground. FUNCTION Active-High Output Enable. Has an internal pullup 100k resistor.
4
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DS4-XO Series Crystal Oscillators
DS4125/DS4155/DS4156/DS4160/DS4311/DS4312/DS4622/DS4776
VCC
X1 TRISTATE PHASE DET LC-VCO FILTER /n OUTSELN OUTDRV
OE OUTP
X2
OUTN
DS4125/DS4155/ DS4156/DS4160/ DS4311/DS4312/ DS4622/DS4776
/m
GND
Figure 1. Functional Diagram
Detailed Description
The devices consist of a fundamental-mode, AT-cut crystal and a synthesizer IC that can synthesize any one of these frequencies: 77.76MHz, 125MHz, 155.52MHz, 156.25MHz, 160MHz, 311.04MHz, 312.5MHz, and 622.08MHz. All devices support two types of differential output drivers: LVDS and LVPECL. When the OE signal is low,
LVPECL outputs go to the PECL_BIAS level of VCC - 2.0V, while the LVDS outputs are a logical one. See Figures 2 and 3 for an LVDS and LVPECL output timing diagram.
Additional Information
For more available frequencies, refer to the DS4106 data sheet at www.maxim-ic.com/DS4106.
0.7 x VCC OE 0.3 x VCC tP1A tPA1 OE
0.7 x VCC 0.3 x VCC tPZA tPAZ PECL_BIAS
OUTP OUTP OUTN PECL_BIAS
OUTN
PECL_BIAS
PECL_BIAS
Figure 2. LVDS Output Timing Diagram When OE Is Enabled and Disabled
Figure 3. LVPECL Output Timing Diagram When OE Is Enabled and Disabled
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DS4-XO Series Crystal Oscillators
DS4125/DS4155/DS4156/DS4160/DS4311/DS4312/DS4622/DS4776
Selector Guide
PART DS4125D+ DS4125P+ DS4155D+ DS4155P+ DS4156D+ DS4156P+ DS4160D+ DS4160P+ DS4311D+ DS4311P+ DS4312D+ DS4312P+ DS4622D+ DS4622P+ DS4776D+ DS4776P+ FREQUENCY (NOM) (MHz) 125.00 125.00 155.52 155.52 156.25 156.25 160.00 160.00 311.04 311.04 312.50 312.50 622.08 622.08 77.76 77.76 FREQUENCY STABILITY (ppm) 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 OUTPUT TYPE LVDS LVPECL LVDS LVPECL LVDS LVPECL LVDS LVPECL LVDS LVPECL LVDS LVPECL LVDS LVPECL LVDS LVPECL TOP MARK 25D 25P 55D 55P 56D 56P 60D 60P 31D 31P 32D 32P 62D 62P 76D 76P
+Denotes a lead-free package. The lead finish is JESD97 category e4 (Au over Ni) and is compatible with both lead-based and leadfree soldering processes.
Pin Configuration
TOP VIEW
N.C. N.C.
Chip Information
SUBSTRATE CONNECTED TO GROUND PROCESS: Bipolar SiGe
+
OE 1 6 VCC
Thermal Information
THETA-JA (C/W) 90
N.C.
2
DS4125
5
OUTN
GND
3
*EP
4
OUTP
Package Information
(For the latest package outline information go to www.maxim-ic.com/DallasPackInfo.)
N.C.
N.C.
PACKAGE TYPE
DOCUMENT NO. 56-G5032-002
(5.00mm x 3.20mm x 1.49mm)
*EXPOSED PAD
10 LCCC
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
6 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.

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