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Número de pieza | DS4776 | |
Descripción | (DS4xxx) DS4-XO Series Crystal Oscillators | |
Fabricantes | Maxim Integrated Products | |
Logotipo | ||
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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 fre-
quencies 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 toler-
ances 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 fun-
damental 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.
Infiniband
BPON/GPON
Ethernet
10GbE
SONET/SDH
Applications
Pin Configuration and Selector Guide appear at end of
data sheet.
Features
♦ < 0.6psRMS 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
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
DS4125D+
-40°C to +85°C
10 LCCC
DS4125P+
-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
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
+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
0.1μF
0.01μF
VCC OUTP
DS4125
OE
GND OUTN
LVDS OPTION
100Ω
0.1μF
0.01μF
VCC OUTP
DS4125
OE
GND OUTN
LVPECL OPTION
50Ω
PECL_BIAS
VCC - 2.0V
50Ω
________________________________________________________________ Maxim Integrated Products 1
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.
1 page DS4-XO Series Crystal Oscillators
VCC
X1
X2
DS4125/DS4155/
DS4156/DS4160/
DS4311/DS4312/
DS4622/DS4776
TRI-
STATE
PHASE
DET
FILTER
LC-VCO
/m
/n
OUTSELN
OUTDRV
OE
OUTP
OUTN
Figure 1. Functional Diagram
GND
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 dri-
vers: 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
tP1A
OUTP
0.3 x VCC
tPA1
OUTN
Figure 2. LVDS Output Timing Diagram When OE Is Enabled
and Disabled
0.7 x VCC
OE
tPZA
PECL_BIAS
OUTP
PECL_BIAS
OUTN
0.3 x VCC
tPAZ
PECL_BIAS
PECL_BIAS
Figure 3. LVPECL Output Timing Diagram When OE Is Enabled
and Disabled
_______________________________________________________________________________________ 5
5 Page |
Páginas | Total 6 Páginas | |
PDF Descargar | [ Datasheet DS4776.PDF ] |
Número de pieza | Descripción | Fabricantes |
DS4776 | (DS4xxx) DS4-XO Series Crystal Oscillators | Maxim Integrated Products |
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