MAXIM DS4-XO User Manual

General Description

The DS4125, DS4150, DS4155, DS4156, DS4160, DS4250, DS4300, DS4311, DS4312, DS4622, and DS4776 ceramic surface-mount crystal oscillators are part of Maxim’s DS4-XO series of crystal oscillators. 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 < 0.7ps

RMS

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.

Applications

InfiniBand

BPON/GPON

Ethernet

10GbE

SONET/SDH

Features

♦ < 0.7ps

RMS

from 12kHz to 20MHz Jitter

♦ LVDS or LVPECL Output Types

♦ 3.3V Operating Voltage

♦ 5.0mm x 3.2mm x 1.49mm, 10-Pin LCCC Ceramic

Package

♦ -40°C to +85°C Operating Temperature Range

♦ Lead-Free/RoHS Compliant

DS4125–DS4776

DS4-XO Series Crystal Oscillators

________________________________________________________________

Maxim Integrated Products

Typical Operating Circuits

Rev 2; 6/08

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.

Pin Configuration and Selector Guide appear at end of data sheet.

Ordering Information continued at end of data sheet.

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.

Ordering Information

PART TEMP RANGE PIN-PACKAGE

DS4125D+ -40°C to +85°C 10 LCCC

DS4125P+ -40°C to +85°C 10 LCCC

DS4150D+ -40°C to +85°C 10 LCCC

DS4150P+ -40°C to +85°C 10 LCCC

DS4155D+ -40°C to +85°C 10 LCCC

DS4155P+ -40°C to +85°C 10 LCCC

DS4156D+ -40°C to +85°C 10 LCCC

DS4156P+ -40°C to +85°C 10 LCCC

DS4160D+ -40°C to +85°C 10 LCCC

DS4160P+ -40°C to +85°C 10 LCCC

DS4250D+ -40°C to +85°C 10 LCCC

DS4250P+ -40°C to +85°C 10 LCCC

DS4300D+ -40°C to +85°C 10 LCCC

DS4300P+ -40°C to +85°C 10 LCCC

0.1μF

0.01μF

DS4125–DS4776

GND

LVDS OPTION

OUTP

OUTN

100Ω

0.1μF

0.01μF

DS4125–DS4776

GND

LVPECL OPTION

OUTP

OUTN

50Ω

PECL_BIAS

- 2.0V

DS4125–DS4776

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= 3.135V to 3.465V, TA= -40°C to +85°C, unless otherwise noted.)

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.

Power-Supply Voltage (VCC) .......................................-0.3V, +4V

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range ...............................-55°C to +85°C

Soldering Temperature Profile

(3 passes max of reflow) ......................Refer to the IPC/JEDEC

J-STD-020 Specification.

DS4-XO Series Crystal Oscillators

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Operating Voltage Range VCC (Note 1) 3.135 3.3 3.465 V

Operating Current

Output Frequency f

Oscillator Startup Time t

Frequency Stability f

Frequency Stability O ver Temperature with Initial Tolerance

Initial Tolerance f

Frequency Change Due to V

Frequency Change Due to Load Variation

Aging (15 Years) f

Jitter J

Input-Voltage High (OE) VIH (Note 1)

Input-Voltage Low (OE) VIL (Note 1) 0

Input Leakage (OE) I

LVDS, output loaded or unloaded 52 75

CC_D

LVPECL, output unloaded 49 70

CC_PU

LVPECL, output l oad 50 at VCC - 2.0V 74 100

CC_P I

OUT

STARTUP

f

(Note 2) 50 ms

TOTAL

f

TEMP

INITIAL

f

VCC

LOAD

AGING

RMS

LEAK

Over temperature range, aging, load, supply, and initial tolerance (Note 3)

VCC = 3.3V -35 +35 ppm

VCC = 3.3V, TA = +25°C ±20 ppm

VCC = 3.3V ±5% -3 +3 ppm/V

±10% variation in termination resistance

-7 +7 ppm

Integrated phase RMS; 12kHz to 5MHz,

= 3.3V, TA = +25°C

Integrated phase RMS; 12kHz to 20MHz,

= 3.3V, TA = +25°C

Integrated phase RMS; 12kHz to 80MHz,

= 3.3V, TA = +25°C

GND  OE  VCC -50 +5.0 μA

MHz

NOM

-50 f

±1 ppm

0.7

1.0

0.7 x V

+50 ppm

NOM

VCC V

0.3 x V

DS4125–DS4776

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= 3.135V to 3.465V, TA= -40°C to +85°C, unless otherwise noted.)

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: Δf

TOTAL

= Δf

TEMP

+ Δf

VCC

x (3.3 x 5%) + Δf

LOAD

+ Δf

AGING

DS4-XO Series Crystal Oscillators

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

LVDS

Output High Voltage V

Output Low Voltage V

Differential Output Voltage

Output Common-Mode Voltage Variation

Change in Differential Magnitude or Complementary Inputs

Offset Output Voltage V

Differential Output Impedance R

Output Current

OHLVDSO

OLLVDSO

ODLVDSO

LVDSOCOM

|V

ODLVDSO

OFFLVDS O

OLVDS O

VS SLVDS O

Output Rise Time (Different ia l) t

Output Fall T ime (Differential) t

Duty Cycle D

RLVDS O

FLVDSO

CYCLE_LVDS

Propagation Delay from OE Going LOW to Logical 1 at OUTP

Propagation Delay from OE Going HIGH to Output Acti ve

LVPECL

Output High Voltage V

Output Low Voltage V

Differential Voltage V

Rise Time t

Fal l Time t

Duty Cycle D

DIFF_PECL

R-PECL

F-PECL

CYCLE_PECL

Propagation Delay from OE Going LOW to Output High Impedance

Propagation Delay from OE Going HIGH to Output Acti ve

100 differential load (Note 1) 1.475 V

100 differential load (Note 1) 0.925 V

100 differential load 250 425 mV

100 differential load 150 mV

100 differential load 25 mV

100 differential load (Note 1) 1.125 1.275 V

80 140 

OUTN or OUTP shorted to ground and measure the current in the shorting path

OUTN or OUTP shorted together 6.5

LVDSO

20% to 80% 175 ps

80% to 20% 175 ps

45 55 %

200 ns

PA1

200 ns

P1A

Output connected to 50 at PECL_BIAS at V

- 2.0V

Output connected to 50 at PECL_BIAS at V

- 2.0V

Output connected to 50 at PECL_BIAS at V

- 2.0V

1.085

1.825

VCC -

0.88

1.62

0.595 0.710 V

200 ps

45 55 %

200 ns

PAZ

200 ns

PZA

+ 5 hidden pages