ICS8MG3-312.500AJIT [IDT]
Oscillator;
| 型号： | ICS8MG3-312.500AJIT |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Oscillator |
| 文件： | 总5页 (文件大小：124K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PRELIMINARY
ICS8MX3
Integrated
Circuit
Systems, Inc.
LVPECL CLOCK OSCILLATOR
ICS8MX3
LOW JITTER, HIGH FREQUENCY XTAL OSCILLATOR
• Stable, ultra low jitter, LVPECL clock generation
• For Gigabit Ethernet, Fibre Channel, PCI-Express™, other applications
• Clock output frequencies from 75MHz to 750MHz
• One differential LVPECL clock output
• Output Enable (OE) pin (high impedance – when low)
• Small 6-pin 5mm x 7mm x 1.5mm SMT ceramic package
• Low profile package allows back-side PCB mounting
• Pb-free RoHS compliant (by default; no additional code required)
• 3.3V or 2.5V device power supply options
8Mx3
(Top View )
O
O
• Commercial (0 to +70 C) and Industrial (-40 to +85 C) temperatures
• Frequency stability of 50ppm or 100ppm
(including initial accuracy, operating temperature variation, supply voltage
variation, load variation, reflow drift, and aging for 10 years)
• Low phase jitter < 1 ps rms maximum (12kHz to 20MHz)
6-pin CERHERMETIC 5mm x 7mm x 1.5mm SMT
ELECTRICAL SPECIFICATIONS
Unless stated otherwise, VCC = 3.3V 5ꢀ or 2.5V 5ꢀ, TA = 0°C to +70°C (commercial), TA = -40°C to +85°C (industrial)
Specifications
Min.
Typ.
Max.
Units
Item
Symbol
Test Conditions
DC Characteristics
Power Supply
(VCC, VEE pins)
3.135
2.375
3.3
2.5
75
3.465
2.625
V
V
3.3V operation
2.5V operation (8MJ3 and 8MK3 only)
Power Supply Voltage
VCC
Power Supply Current
Current w/Output Disabled
Input Capacitance
IEE
mA
mA
pF
V
OE = VCC
OE = VEE
IOED
CIN
VIH
<0.6
4
Output Enable
(OE pin)
LVCMOS/LVTTL
Input High Voltage
0.7 * VCC
-150
Input Low Voltage
VIL
0.3 * VCC
5
V
Input High Current
IIH
µA
µA
VCC = VIN = 3.465V or 2.625V
Input Low Current
IIL
VCC = 3.465V or 2.625V, VIN
=
0V
Internal Pullup Resistor
Output High Voltage1
RPULLUP
VOH
51
kΩ
Clock Output
Level
(OUT, nOUT)
LVPECL
Outputs terminated with 50
See Parameter Measurement Information,
Output Load AC Test Circuit diagrams.
See Parameter Measurement Information,
Output Rise/Fall Time diagram
Ω
to VCC - 2V.
VCC - 1.4
VCC - 2.0
VCC - 0.9
VCC - 1.7
V
Output Low Voltage1
VOL
V
Peak-to-Peak Output
Voltage Swing
VSWSING
0.6
1.0
V
AC Characteristics
Output
(OUT, nOUT)
Output Frequency Range
75
750
100
50
MHz
All conditions
ppm p-p 8MH3 & 8MK3
ppm p-p 8MG3 & 8MJ3
ꢀ
Includes frequency set, VCC, TA and
load variation, reflow drift, 10 yr. aging
Frequency Stability Error
Δ
f/fO
Output Duty Cycle
Output Rise Time
Output Fall Time
odc
tR
50
See Output Duty Cycle Diagram
and Rise/Fall Time Diagram in
Parameter Measurement Information
600
600
10
ps
20ꢀ to 80ꢀ
of VOH - VOL
tF
ps
ms
Oscillator Start-up Time
RMS Phase Jitter, Random2 t jit (Ø)
tOSC
Time at Min. VCC (3.135V or 2.375V) to be 0s
design target
<1
ps rms
ps
3
Jitter
tDS
tRS
0.2
3
Deterministic
3
ps
Random, σ of random jitter
Root Mean Square,
3
tRMS
3
ps
σ of total jitter distribution
3
tP-P
25
4
ps
Peak-to-Peak
3
tacc
ps
Accumulated Jitter, n = 2 to 50,000 cycles
NOTE 1: Outputs terminated with 50Ω to VCC - 2V. See Parameter Measurement Information, Output Load AC Test Circuit diagrams.
NOTE 2: Measured using an Aeroflex PN9500 with a 12kHz to 20MHz integration range.
NOTE 3: Measured using a Wavecrest SIA-3000.
Supply Voltage & Frequency Accuracy
G =
H =
J =
3.3V / 3.3V
3.3V / 3.3V
2.5V / 3.3V
2.5V / 3.3V
50 ppm
100 ppm
50 ppm
The Preliminary Information presented herein represents a product in prototyping or pre-production. The
noted characteristics are based on initial product characterization. Integrated Circuit Systems, Incorpo-
rated (ICS) reserves the right to change any circuitry or specifications without notice.
K =
100 ppm
8Mx3AJ
www.icst.com/products/hiperclocks.html
REV. B JUNE 6, 2005
1
PRELIMINARY
ICS8MX3
Integrated
Circuit
Systems, Inc.
LVPCECL CLOCK OSCILLATOR
PIN DESCRIPTIONS
ABSOLUTE MAXIMUM RATINGS
Number
Name
Type
Input
Description
Item
Symbol
Condition
-0.5 to VCC +0.5
-0.5 to VCC +0.5
4.6
Unit
Output enable pin.
Pullup High Impedance when LOW.
LVCMOS/LVTTL interface levels.
Input Voltage
VI
V
1
OE
Output Voltage
VO
V
2
3
nc
Unused
Power
No connect.
Positive Supply Voltage
Package Thermal Impedence
Storage Temperature
VCC
V
°C/W (0lfpm)
°C
VEE
Negative supply pin.
TBD
4,
5
OUT,
nOUT
Differential clock outputs.
LVPECL interface levels.
Output
Power
TS
-40 to +100
Stresses beyond those listed under Absolute Maximum Ratings may cause
permanent damage to the device. These ratings are stress specifications
only. Functional operation of product at these conditions or any conditions
beyond those listed in DC Characteristics or AC Characteristics is not
implied. Exposure to absolute maximum rating conditions for extended
periods may affect product reliability.
6
VCC
Power supply pin.
For typical value of internal Pullup resistor, see DC Characteristics.
PARAMETER MEASUREMENT INFORMATION
2V
2V
SCOPE
SCOPE
VCC
VCC
Qx
Qx
LVPECL
VEE
LVPECL
VEE
nQx
nQx
-1.3V 0.165V
-0.5V 0.125V
3.3V OUTPUT LOAD AC TEST CIRCUIT
2.5V OUTPUT LOAD AC TEST CIRCUIT
Phase Noise Plot
nOUT
OUT
Pulse Width
tPERIOD
tPW
odc =
Offset Frequency
f1
f2
tPERIOD
RMS Jitter = Area Under Offset Frequency Markers
RMS PHASE JITTER
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
80ꢀ
tF
80ꢀ
tR
VSWING
20ꢀ
Clock
Outputs
20ꢀ
OUTPUT RISE/FALL TIME
8Mx3AJ
www.icst.com/products/hiperclocks.html
REV. B JUNE 6, 2005
2
PRELIMINARY
ICS8MX3
Integrated
Circuit
Systems, Inc.
LVPECL CLOCK OSCILLATOR
APPLICATION INFORMATION
TERMINATION FOR 3.3V LVPECL OUTPUT
The clock layout topology shown below is a typical termination
for LVPECL outputs. The two different layouts mentioned are
recommended only as guidelines.
TERMINATION FOR 2.5V LVPECL OUTPUT
Figure 2A and Figure 2B show examples of termination for 2.5V
LVPECL driver.These terminations are equivalent to terminating 50Ω
to VCC - 2V. For VCC = 2.5V, the VCC - 2V is very close to ground level.
The R3 in Figure 2B can be eliminated and the termination is shown
in Figure 2C.
FOUT and nFOUT are low impedance following outputs that gen-
erate ECL/LVPECL compatible outputs.Therefore, terminating re-
sistors (DC current path to ground) or current sources must be
used for functionality. These outputs are designed to drive 50Ω
transmission lines. Matched impedance techniques should be
used to maximize operating frequency and minimize signal dis-
tortion. Figures 1A and 1B show two different layouts which are
recommended only as guidelines. Other suitable clock layouts
may exist and it would be recommended that the board designers
simulate to guarantee compatibility across all printed circuit and
clock component process variations.
2.5V
2.5V
VCC=2.5V
R1
R3
250
250
Zo = 50 Ohm
Zo = 50 Ohm
+
-
2,5V LVPECL
Driv er
R2
62.5
R4
62.5
Z
o = 50Ω
FOUT
FIN
FIGURE 2A. 2.5V LVPECL DRIVER TERMINATION EXAMPLE
Zo = 50Ω
2.5V
VCC=2.5V
50Ω
50Ω
VCC - 2V
Zo = 50 Ohm
1
RTT =
Zo
RTT
+
((VOH + VOL) / (VCC – 2)) – 2
Zo = 50 Ohm
-
2,5V LVPECL
Driv er
R1
50
R2
50
FIGURE 1A. LVPECL OUTPUT TERMINATION
3.3V
R3
18
125Ω
125Ω
Zo = 50Ω
Zo = 50Ω
FIGURE 2B. 2.5V LVPECL DRIVER TERMINATION EXAMPLE
FOUT
FIN
2.5V
VCC=2.5V
84Ω
84Ω
Zo = 50 Ohm
+
Zo = 50 Ohm
-
2,5V LVPECL
Driv er
FIGURE 1B. LVPECL OUTPUT TERMINATION
R1
50
R2
50
FIGURE 2C. 2.5V LVPECL TERMINATION EXAMPLE
www.icst.com/products/hiperclocks.html
8Mx3AJ
REV. B JUNE 6, 2005
3
PRELIMINARY
ICS8MX3
Integrated
Circuit
Systems, Inc.
LVPCECL CLOCK OSCILLATOR
PACKAGE OUTLINE - J SUFFIX FOR 6 LEAD SMT CERHERMETIC, 5mm X 7mm X 1.5mm
D
2
B
C
D
1
F
(TYP.)
N
N
A
E (TYP.)
PIN 1
INDEX
H
(TYP.)
O
1
1
6 Terminal
Option Pkg.
J (TYP.)
Metalized
G (TYP.)
DIMENSIONS IN MILLIMETERS
SYMBOL
Nominal
5
Tolerance
0.15
0.15
0.15
0.13
0.13
0.13
0.13
0.13
-
A
B
C
D1
D2
E
7
1.5
2.54
5.08
2.6
F
0.6
G
H
J
1.4
0.15 Ref.
0.65 Ref.
-
8Mx3AJ
www.icst.com/products/hiperclocks.html
REV. B JUNE 6, 2005
4
PRELIMINARY
ICS8MX3
Integrated
Circuit
Systems, Inc.
LVPECL CLOCK OSCILLATOR
ORDERING INFORMATION
Part/Order Number*
ICS8Mx3-75.000AJ
ICS8Mx3-75.000AJT
ICS8Mx3-100.000AJ
ICS8Mx3-100.000AJT
ICS8Mx3-106.250AJ
ICS8Mx3-106.250AJT
ICS8Mx3-125.000AJ
ICS8Mx3-125.000AJT
ICS8Mx3-156.250AJ
ICS8Mx3-156.250AJT
ICS8Mx3-159.375AJ
ICS8Mx3-159.375AJ
ICS8Mx3-187.500AJ
ICS8Mx3-187.500AJT
ICS8Mx3-212.500AJ
ICS8Mx3-212.500AJT
ICS8Mx3-250.000AJ
ICS8Mx3-250.000AJT
ICS8Mx3-312.500AJ
ICS8Mx3-312.500AJT
Marking*
Package
Shipping Packaging
Tube
Temperature
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
ICS8Mx3 75.000
ICS8Mx3 75.000
ICS8Mx3 100.000
ICS8Mx3 100.000
ICS8Mx3 106.250
ICS8Mx3 106.250
ICS8Mx3 125.000
ICS8Mx3 125.000
ICS8Mx3 156.250
ICS8Mx3 156.250
ICS8Mx3 159.375
ICS8Mx3 159.375
ICS8Mx3 187.500
ICS8Mx3 187.500
ICS8Mx3 212.500
ICS8Mx3 212.500
ICS8Mx3 250.000
ICS8Mx3 250.000
ICS8Mx3 312.500
ICS8Mx3 312.500
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
6 lead CERHERMETIC
1000 Tape & Reel
Tube
1000 Tape & Reel
Tube
1000 Tape & Reel
Tube
1000 Tape & Reel
Tube
1000 Tape & Reel
Tube
1000 Tape & Reel
Tube
1000 Tape & Reel
Tube
1000 Tape & Reel
Tube
1000 Tape & Reel
Tube
1000 Tape & Reel
*See table below for Part/Order Number Information. Where "x" is applied, see Supply Voltage & Frequency Accuracy in the Part/Order
Number Information table.
PART/ORDER NUMBER INFORMATION
Part/Order Number:
ICS8M x 3 - fff.fff r p t u
Device
SupplyVoltage & Frequency Accuracy
G = 3.3V
H = 3.3V
J = 2.5/3.3V
50 ppm
100 ppm
50 ppm
K = 2.5/3.3V
100 ppm
OutputType
3 = LVPECL
Output Frequency (MHz)
Leading zeroes dropped. Fourth decimal place added if necessary.
Consult ICS for other frequencies.
Revision of Product
A = Initial Release
PackageType (individual devices)
J = 5x7mm ceramic SMT
AmbientTemperature Range
none = commercial = 0°C to +70°C
I = industrial = -40°C to +85°C
Bulk Packaging option
none = tube
T = tape and reel (1000 devices)
Note: Lead-free by default (no addition "LF" code needed).
(Pb-free and RoHS complaint)
The ICS logo is a registered trademark, and HiPerClockS is a trademark of Integrated Circuit Systems, Inc. All other trademarks are the property of their respective owners and
may be registered in certain jurisdictions.
While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems, Incorporated (ICS) assumes no responsibility for either its use
or for infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use
in normal commercial and industrial applications. Any other applications such as those requiring high reliability or other extraordinary environmental requirements are not
recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS product
for use in life support devices or critical medical instruments.
8Mx3AJ
www.icst.com/products/hiperclocks.html
REV. B JUNE 6, 2005
5
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