DS4125P+ [MAXIM]
DS4-XO Series Crystal Oscillators; DS4 -XO系列晶体振荡器
| 型号： | DS4125P+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | DS4-XO Series Crystal Oscillators |
| 文件： | 总6页 (文件大小：130K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Rev 0; 7/07
DS4-XO Series Crystal Oscillators
50312/DS476
General Description
Features
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.
♦ < 0.6ps
from 12kHz to 20MHz Jitter
RMS
♦ 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
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.
Ordering Information
PART
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
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
DS4125D+
DS4125P+
DS4155D+
DS4155P+
DS4156D+
DS4156P+
DS4160D+
DS4160P+
DS4311D+
DS4311P+
DS4312D+
DS4312P+
DS4622D+
DS4622P+
DS4776D+
DS4776P+
These clock oscillators have very low phase jitter and
phase noise. Typical phase jitter is < 0.6ps
from
RMS
12kHz to 20MHz. The devices are designed to operate
with a 3.3V 5ꢀ 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
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
V
OUTP
OUTN
V
OUTP
OUTN
CC
CC
0.1μF
0.01μF
0.1μF
0.01μF
50Ω
50Ω
DS4125
DS4125
PECL_BIAS
- 2.0V
100Ω
V
CC
OE
OE
GND
GND
LVDS OPTION
LVPECL OPTION
________________________________________________________________ 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.
DS4-XO Series Crystal Oscillators
ABSOLUTE MAXIMUM RATINGS
Power-Supply Voltage (V ).......................................-0.3V, +4V
Storage Temperature Range...............................-55°C to +85°C
Soldering Temperature Profile
(3 passes max of reflow).................See IPC/JEDEC J-STD-020
Specification
CC
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
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
(V
CC
= 3.135V to 3.465V, T = -40°C to +85°C, unless otherwise noted.)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
3.3
50
MAX
3.465
70
UNITS
Operating Voltage Range
V
(Note 1)
3.135
V
CC
I
LVDS, output loaded or unloaded
LVPECL, output unloaded
CC_D
Operating Current
mA
I
45
65
CC_PU
I
LVPECL, output load 50ꢀ at V - 2.0V
70
95
CC_PI
CC
Output Frequency
f
f
MHz
ms
OUT
STARTUP
NOM
Oscillator Startup Time
t
(Note 2)
50
Over temperature range, aging, load,
supply, and initial tolerance (Note 3)
Frequency Stability
ꢁf
-50
-35
f
+50
ppm
ppm
TOTAL
NOM
Frequency Stability Over
Temperature with Initial Tolerance
ꢁf
V
= 3.3V
+35
+3
TEMP
CC
Initial Tolerance
ꢁf
INITIAL
V
V
= 3.3V, T = +25°C
20
1
ppm
CC
CC
A
Frequency Change Due to ꢁV
ꢁf
= 3.3V ±5%
-3
-7
ppm/V
CC
VCC
LOAD
AGING
Frequency Change Due to Load
Variation
±10% variation in termination
resistance
ꢁf
ppm
ppm
Aging (15 Years)
ꢁf
+7
Integrated phase RMS; 12kHz to 5MHz,
< 0.5
< 0.6
< 1.0
V
= 3.3V, T = +25°C
A
CC
Integrated phase RMS; 12kHz to 20MHz,
= 3.3V, T = +25°C
Jitter
J
ps
V
RMS
V
CC
A
Integrated phase RMS; 12kHz to 80MHz,
= 3.3V, T = +25°C
V
CC
A
0.7 x
Input-Voltage High (OE)
V
(Note 1)
V
CC
IH
V
CC
0.3 x
Input-Voltage Low (OE)
Input Leakage (OE)
V
(Note 1)
0
V
IL
V
CC
I
GND ꢂ OE ꢂ V
-50
+5.0
μA
LEAK
CC
50312/DS476
2
_______________________________________________________________________________________
DS4-XO Series Crystal Oscillators
50312/DS476
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 3.135V to 3.465V, T = -40°C to +85°C, unless otherwise noted.)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LVDS
Output High Voltage
Output Low Voltage
V
100ꢀ differential load (Note 1)
100ꢀ differential load (Note 1)
100ꢀ differential load
1.475
V
V
OHLVDSO
V
0.925
250
OLLVDSO
|
|
Differential Output Voltage
V
425
150
mV
ODLVDSO
Output Common-Mode Voltage
Variation
V
100ꢀ differential load
mV
mV
LVDSOCOM
Change in Differential Magnitude
or Complementary Inputs
|
|
ꢁ V
100ꢀ differential load
25
ODLVDSO
Offset Output Voltage
V
100ꢀ differential load (Note 1)
1.125
80
1.275
140
V
OFFLVDSO
Differential Output Impedance
R
ꢀ
OLVDSO
OUTN or OUTP shorted to ground and
measure the current in the shorting path
L
40
VSSLVDSO
Output Current
mA
L
OUTN or OUTP shorted together
20% to 80%
6.5
175
175
LVDSO
Output Rise Time (Differential)
Output Fall Time (Differential)
Duty Cycle
t
ps
ps
%
RLVDSO
t
80% to 20%
FLVDSO
D
45
55
CYCLE_LVDS
Propagation Delay from OE Going
LOW to Logical 1 at OUTP
t
200
ns
ns
PA1
P1A
Propagation Delay from OE Going
HIGH to Output Active
t
200
LVPECL
Output connected to 50ꢀ at PECL_BIAS
V
-
V
0.88
-
CC
CC
Output High Voltage
V
V
V
V
OH
at V
- 2.0V
1.085
CC
Output connected to 50ꢀ at PECL_BIAS
at V - 2.0V
V
-
V
1.62
-
CC
CC
Output Low Voltage
Differential Voltage
V
OL
1.825
CC
Output connected to 50ꢀ at PECL_BIAS
at V - 2.0V
V
0.595
0.710
DIFF_PECL
CC
Rise Time
Fall Time
t
200
200
ps
ps
%
R-PECL
t
F-PECL
CYCLE_PECL
Duty Cycle
D
45
55
Propagation Delay from OE Going
LOW to Output High Impedance
t
200
ns
ns
PAZ
PZA
Propagation Delay from OE Going
HIGH to Output Active
t
200
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 + Δf + Δf + (Δf
x 0.165) + Δf
+ Δf
.
TOTAL
INITIAL
TEMP
VCC
LOAD
AGING
_______________________________________________________________________________________
3
DS4-XO Series Crystal Oscillators
SINGLE-SIDEBAND PHASE NOISE AT f = f
0
NOM
SINGLE-SIDEBAND PHASE NOISE AT f = f
(dBc/Hz)
0
NOM
f
=
M
77.76MHz
-60
125.00MHz
-70
155.52MHz
-70
156.25MHz
-70
160.00MHz
-70
311.04MHz
-65
312.5MHz
-65
622.08MHz
-60
10Hz
100Hz
1kHz
-95
-100
-100
-100
-100
-95
-95
-90
-122
-126
-131
-143
-149
-153
-120
-120
-120
-120
-113
-113
-113
-118
-137
-149
-153
-107
10kHz
100kHz
1MHz
-120
-120
-120
-120
-113
-107
-125
-125
-125
-125
-118
-113
-142
-142
-142
-142
-137
-131
10MHz
20MHz
-149
-149
-149
-149
-149
-147
-153
-153
-153
-153
-153
-150
Pin Description
PIN
NAME
OE
FUNCTION
1
Active-High Output Enable. Has an internal pullup 100kꢀ resistor.
No Connection. Must be floated.
Ground
2, 7–10
N.C.
3
4
5
6
GND
OUTP
OUTN
Positive Output for LVPECL or LVDS
Negative Output for LVPECL or LVDS
Supply Voltage
V
CC
Exposed Paddle. The exposed pad must be used for thermal relief. This pad can be connected to
ground.
—
EP
50312/DS476
4
_______________________________________________________________________________________
DS4-XO Series Crystal Oscillators
50312/DS476
V
CC
OE
X1
X2
LC-VCO
OUTP
TRI-
STATE
PHASE
DET
FILTER
/n
OUTDRV
OUTSELN
OUTN
DS4125/DS4155/
DS4156/DS4160/
DS4311/DS4312/
DS4622/DS4776
/m
GND
Figure 1. Functional Diagram
LVPECL outputs go to the PECL_BIAS level of
- 2.0V, while the LVDS outputs are a logical one.
See Figures 2 and 3 for an LVDS and LVPECL output
timing diagram.
Detailed Description
V
CC
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.
Additional Information
For more available frequencies, refer to the DS4106
All devices support two types of differential output dri-
vers: LVDS and LVPECL. When the OE signal is low,
data sheet at www.maxim-ic.com/DS4106.
0.7 x V
CC
0.7 x V
CC
0.3 x V
PA1
CC
0.3 x V
CC
OE
t
P1A
OE
t
t
PECL_BIAS
PECL_BIAS
PZA
t
PAZ
OUTP
PECL_BIAS
PECL_BIAS
OUTP
OUTN
OUTN
Figure 2. LVDS Output Timing Diagram When OE Is Enabled
and Disabled
Figure 3. LVPECL Output Timing Diagram When OE Is Enabled
and Disabled
_______________________________________________________________________________________
5
DS4-XO Series Crystal Oscillators
Selector Guide
FREQUENCY (NOM)
(MHz)
FREQUENCY
STABILITY (ppm)
PART
OUTPUT TYPE
TOP MARK
DS4125D+
DS4125P+
DS4155D+
DS4155P+
DS4156D+
DS4156P+
DS4160D+
DS4160P+
DS4311D+
DS4311P+
DS4312D+
DS4312P+
DS4622D+
DS4622P+
DS4776D+
DS4776P+
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
±50
±50
±50
±50
±50
±50
±50
±50
±50
±50
±50
±50
±50
±50
±50
±50
LVDS
LVPECL
LVDS
25D
25P
55D
55P
56D
56P
60D
60P
31D
31P
32D
32P
62D
62P
76D
76P
LVPECL
LVDS
LVPECL
LVDS
LVPECL
LVDS
LVPECL
LVDS
LVPECL
LVDS
LVPECL
LVDS
77.76
LVPECL
+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.
Pin Configuration
Chip Information
SUBSTRATE CONNECTED TO GROUND
TOP VIEW
PROCESS: Bipolar SiGe
N.C.
N.C.
+
OE
N.C.
GND
1
6
5
4
V
CC
Thermal Information
THETA-JA (°C/W)
2
3
OUTN
OUTP
DS4125
90
*EP
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
10 LCCC
(5.00mm × 3.20mm × 1.49mm)
*EXPOSED PAD
50312/DS476
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
© 2007 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.
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