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

1

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

V

CC

0.1μF

0.01μF

DS4125–DS4776

OE

GND

LVDS OPTION

OUTP

OUTN

100Ω

0.1μF

0.01μF

V

CC

DS4125–DS4776

OE

GND

LVPECL OPTION

OUTP

OUTN

50Ω

50Ω

PECL_BIAS

- 2.0V

V

CC

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

CC

I

LVDS, output loaded or unloaded 52 75

CC_D

I

LVPECL, output unloaded 49 70

CC_PU

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

I

CC_P I

f

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

V

CC

Integrated phase RMS; 12kHz to 20MHz,

= 3.3V, TA = +25°C

V

CC

Integrated phase RMS; 12kHz to 80MHz,

= 3.3V, TA = +25°C

V

CC

GND  OE  VCC -50 +5.0 μA

MHz

NOM

-50 f

±1 ppm

0.7

0.7

1.0

0.7 x
V

CC

+50 ppm

NOM

VCC V

0.3 x
V

CC

mA

ps

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

|

V

ODLVDSO

V

LVDSOCOM

|V

ODLVDSO

OFFLVDS O

OLVDS O

L

VS SLVDS O

L

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

40

20% to 80% 175 ps

80% to 20% 175 ps

45 55 %

t

200 ns

PA1

200 ns

t

P1A

OH

OL

Output connected to 50 at PECL_BIAS
at V

- 2.0V

CC

Output connected to 50 at PECL_BIAS
at V

- 2.0V

CC

Output connected to 50 at PECL_BIAS
at V

- 2.0V

CC

-

V

CC

1.085

-

V

CC

1.825

VCC -

0.88

V

-

CC

1.62

0.595 0.710 V

200 ps

200 ps

45 55 %

t

200 ns

PAZ

t

200 ns

PZA

mA

V

V

Pin Description

DS4125–DS4776

DS4-XO Series Crystal Oscillators

4 _______________________________________________________________________________________

SINGLE-SIDEBAND PHASE NOISE AT fO= f

NOM

Typical Operating Characteristics

(VCC= +3.3V, TA = +25°C, unless otherwise noted.)

FREQUENCY vs. TEMPERATURE

DS4125/776 toc01

TEMPERATURE (°C)

f

OUT

DEVIATION (ppm)

806020 400-20

-18

-15

-13

-10

-8

-5

-3

0

3

5

8

10

13

15

-20

-40

OPERATING CURRENT (DS4155)

vs. OPERATING VOLTAGE

DS4125/776 toc02

VCC (V)

I

CC

(mA)

3.4353.3853.3353.2853.2353.185

48

50

53

55

45

3.135

+85°C

0°C

-40°C

+70°C

+40°C

+25°C

fM =

77.76MHz 125.00MHz 155.52MHz 156.25MHz 160.00MHz 311.04MHz 312.5MHz 622.08MHz

SINGLE-SIDEBAND PHASE NOISE AT fO = f

NOM

(dBc/Hz)

10Hz -60 -70 -70 -70 -70 -65 -65 -60

100Hz -95 -100 -100 -100 -100 -95 -95 -90

1kH z -122 -120 -120 -120 -120 -113 -113 -107

10kHz -126 -120 -120 -120 -120 -113 -113 -107

100kHz -131 -125 -125 -125 -125 -118 -118 -113

1MHz -143 -142 -142 -142 -142 -137 -137 -131

10MHz -149 -149 -149 -149 -149 -149 -149 -147

20MHz -153 -153 -153 -153 -153 -153 -153 -150

PIN NAME FUNCTION

1 OE Active-High Output Enable. Has an internal pul lup 100 k resistor.

2, 7–10 N.C. No Connection. Must be floated.

3 GND Ground

4 OUTP Posit ive Output for LVPECL or LVDS

5 OUTN Negat ive Output for LVPECL or LVDS

6 VCC Supply Voltage

— EP Exposed Paddle. Do not connect this pad or place exposed metal under the pad.

DS4125–DS4776

DS4-XO Series Crystal Oscillators

_______________________________________________________________________________________ 5

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,
150MHz, 155.52MHz, 156.25MHz, 160MHz, 250MHz,
300MHz, 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
V

CC

- 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.

Figure 1. Functional Diagram

Figure 2. LVDS Output Timing Diagram When OE Is Enabled
and Disabled

Figure 3. LVPECL Output Timing Diagram When OE Is Enabled
and Disabled

X1

TRI-

X2

DS4125–DS4776

STATE
PHASE

DET

FILTER

/m

V

CC

LC-VCO

/n

OUTSELN

OUTDRV

GND

OE

OUTP

OUTN

0.7 x V

OUTP

OUTN

CC

OE

t

P1A

0.3 x V

t

PA1

CC

0.7 x V

CC

OE

OUTP

OUTN

t

PZA

PECL_BIAS PECL_BIAS

PECL_BIAS PECL_BIAS

0.3 x V

t

PAZ

CC

DS4125–DS4776

DS4-XO Series Crystal Oscillators

6 _______________________________________________________________________________________

Chip Information

SUBSTRATE CONNECTED TO GROUND

PROCESS: BiPOLAR SiGe

Selector Guide

+

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.

Thermal Information

+

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 (continued)

PART TEMP RANGE PIN-PACKAGE

DS4311D+ -40°C to +85°C 10 LCCC

DS4311P+ -40°C to +85°C 10 LCCC

DS4312D+ -40°C to +85°C 10 LCCC

DS4312P+ -40°C to +85°C 10 LCCC

DS4622D+ -40°C to +85°C 10 LCCC

DS4622P+ -40°C to +85°C 10 LCCC

DS4776D+ -40°C to +85°C 10 LCCC

DS4776P+ -40°C to +85°C 10 LCCC

THETA-JA (°C/W)

90

PART

DS4125D+ 125.00 ±50 LVDS 25D

DS4125P+ 125.00 ±50 LVPECL 25P

DS4150D+ 150.00 ±50 LVDS 50D

DS4150P+ 150.00 ±50 LVPECL 50P

DS4155D+ 155.52 ±50 LVDS 55D

DS4155P+ 155.52 ±50 LVPECL 55P

DS4156D+ 156.25 ±50 LVDS 56D

DS4156P+ 156.25 ±50 LVPECL 56P

DS4160D+ 160.00 ±50 LVDS 60D

DS4160P+ 160.00 ±50 LVPECL 60P

DS4250D+ 250.00 ±50 LVDS T5D

DS4250P+ 250.00 ±50 LVPECL T5P

DS4300D+ 300.00 ±50 LVDS 30D

DS4300P+ 300.00 ±50 LVPECL 30P

DS4311D+ 311.04 ±50 LVDS 31D

DS4311P+ 311.04 ±50 LVPECL 31P

DS4312D+ 312.50 ±50 LVDS 32D

DS4312P+ 312.50 ±50 LVPECL 32P

DS4622D+ 622.08 ±50 LVDS 62D

DS4622P+ 622.08 ±50 LVPECL 62P

DS4776D+ 77.76 ±50 LVDS 76D

DS4776P+ 77.76 ±50 LVPECL 76P

FREQUENCY (NOM)

(MHz)

FREQUENCY

STABILITY (ppm)

OUTPUT TYPE TOP MARK

DS4125–DS4776

DS4-XO Series Crystal Oscillators

_______________________________________________________________________________________ 7

Pin Configuration

PACKAGE TYPE PACKAGE CODE DOCUMENT NO.

10 LCCC L1053+H2

21-0389

Package Information

For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages

.

TOP VIEW

OE

N.C.

GND

(5.00mm × 3.20mm × 1.49mm)

*EXPOSED PAD

N.C. N.C.

+

1

2

3

*EP

N.C. N.C.

DS4125

6

V

CC

5

OUTN

4

OUTP

DS4125–DS4776

DS4-XO Series Crystal Oscillators

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.

8

_____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

© 2008 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.

Revision History

REVISION

NUMBER

0 7/07 Initial release. —

REVISION

DATE

DESCRIPTION

Added DS4150, DS4250, DS4300. All

PAGES

CHANGED

1 3/08

2 6/08 Remo ved future status from the DS4150, DS4250, and DS4300. 1, 6

Removed f

In the Pin Description, changed the EP description to indicate that it should not
be connected and to avoid placing exposed metal under the pad location.

from the frequency stability calculation in Note 3. 3

INITIAL

4