ICS840AM-125T [IDT]
Clock Generator, 125MHz, PDSO8, 3.90 X 4.92 MM, 1.37 MM HEIGHT, MS-012, SOIC-8;
| 型号： | ICS840AM-125T |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | Clock Generator, 125MHz, PDSO8, 3.90 X 4.92 MM, 1.37 MM HEIGHT, MS-012, SOIC-8 时钟 光电二极管 外围集成电路 晶体 |
| 文件： | 总9页 (文件大小：160K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ICS840-125
125MHZ, LVCMOS/LVTTL
OSCILLATOR REPLACEMENT
Integrated
Circuit
Systems, Inc.
GENERAL DESCRIPTION
FEATURES
The ICS840-125 is a Gigabit Ethernet Oscillator • One LVCMOS/LVTTL output, 15Ω output impedance
ICS
Replacement and
a
member of the
• Crystal oscillator interface designed for 25MHz,
18pF parallel resonant crystal
HiPerClocksTM family of high performance
devices from ICS. The ICS840-125 uses a
25MHz crystal to synthesize 125MHz. The
HiPerClockS™
• Output frequency: 125MHz
ICS840-125 has excellent jitter performance. The
ICS840-125 is packaged in a small 8-pin TSSOP, making
it ideal for use in systems with limited board space.
• Random jitter: 3.7ps (typical)
• Deterministic jitter: 0.1ps (typical)
• 3.3V operating supply
• 0°C to 70°C ambient operating temperature
• Available in both standard and lead-free RoHS-compliant
packages
BLOCK DIAGRAM
PIN ASSIGNMENT
Pullup
OE
VDD
XTAL_OUT
XTAL_IN
OE
nc
1
2
3
4
8
7
6
5
Q
VDDO
GND
25MHz
XTAL_IN
125MHz
Clock
Synthesizer
Q
ICS840-125
8-Lead TSSOP
4.40mm x 3.0mm x 0.925mm package body
G Package
XTAL_OUT
Top View
ICS840-125
8-Lead SOIC
3.90mm x 4.92mm x 1.37mm body package
M Package
Top View
840AG-125
www.icst.com/products/hiperclocks.html
REV.A FEBRUARY 3, 2006
1
ICS840-125
125MHZ, LVCMOS/LVTTL
OSCILLATOR REPLACEMENT
Integrated
Circuit
Systems, Inc.
TABLE 1. PIN DESCRIPTIONS
Number
Name
Type
Description
1
VDD
Power
Input
Power supply pin.
XTAL_OUT,
XTAL_IN
Crystal oscillator interface. XTAL_IN is the input,
XTAL_OUT is the output.
Output enable pin. When HIGH, Q output is enabled. When LOW,
forces Q output to HiZ state. LVCMOS/LVTTL interface levels.
2, 3
4
OE
Input
Pullup
5
6
GND
VDDO
Power
Power
Power supply ground.
Output supply pin.
Single-ended clock output. LVCMOS/LVTTL interface levels.
15Ω output impedance.
No connect
7
8
Q
Output
nc
Unused
NOTE: Pullup refers to internal input resistors. See Table 2, Pin Characteristics, for typical values.
TABLE 2. PIN CHARACTERISTICS
Symbol
CIN
Parameter
Test Conditions
Minimum
Typical Maximum Units
Input Capacitance
Input Pullup Resistor
Output Impedance
4
pF
kΩ
Ω
RPULLUP
ROUT
51
15
TABLE 3. CONROL FUNCTION TABLE
Control Inputs
Output
Q
OE
0
Hi-Z
1
Active
840AG-125
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REV.A FEBRUARY 3, 2006
2
ICS840-125
125MHZ, LVCMOS/LVTTL
OSCILLATOR REPLACEMENT
Integrated
Circuit
Systems, Inc.
ABSOLUTE MAXIMUM RATINGS
SupplyVoltage, V
4.6V
NOTE: Stresses beyond those listed under Absolute
Maximum Ratings may cause permanent damage to the
device. These ratings are stress specifications only. Func-
tional operation of product at these conditions or any condi-
tions beyond those listed in the DC Characteristics or AC
Characteristics is not implied. Exposure to absolute maxi-
mum rating conditions for extended periods may affect prod-
uct reliability.
DD
Inputs, V
-0.5V to VDD + 0.5 V
-0.5V to VDDO + 0.5V
I
Outputs, VO
Package Thermal Impedance, θJA
8 Lead TSSOP
101.7°C/W (0 mps)
112.7°C/W (0 lfpm)
8 Lead SOIC
StorageTemperature, T
-65°C to 150°C
STG
TABLE 4A. POWER SUPPLY DC CHARACTERISTICS, VDD = VDDO = 3.3V 0.3V, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum
3.0
Typical
3.3
Maximum Units
VDD
VDDO
IDD
Power Supply Voltage
3.6
3.6
96
V
Output Supply Voltage
Power Supply Current
Output Supply Current
3.0
3.3
V
OE = VDD (output enabled)
mA
mA
IDDO
24
TABLE 4B. LVCMOS/LVTTL DC CHARACTERISTICS, VDD = VDDO = 3.3V 0.3V, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
VIH
VIL
IIH
Input High Voltage
2
VDD + 0.3
V
V
Input Low Voltage
-0.3
0.8
5
Input High Current
VDD = VIN = 3.6V
µA
µA
V
IIL
Input Low Current
VDD = 3.6V, VIN = 0V
-150
2.6
VOH
VOL
Output High Voltage; NOTE 1
Output Low Voltage; NOTE 1
0.5
V
NOTE 1: Outputs terminated with 50Ω to VDDO/2. See Parameter Measurement Information Section,
"3.3V Output Load Test Circuit".
TABLE 5. CRYSTAL CHARACTERISTICS
Parameter
Test Conditions
Minimum
Typical Maximum Units
Fundamental
25
Mode of Oscillation
Frequency
MHz
pF
Shunt Capacitance
Drive Level
7
1
mW
840AG-125
www.icst.com/products/hiperclocks.html
REV.A FEBRUARY 3, 2006
3
ICS840-125
125MHZ, LVCMOS/LVTTL
OSCILLATOR REPLACEMENT
Integrated
Circuit
Systems, Inc.
TABLE 6. AC CHARACTERISTICS, VDD = VDDO = 3.3V 0.3V, TA = 0°C TO 70°C
Symbol Parameter
fOUT Output Frequency
tDJ
Test Conditions
Minimum Typical Maximum Units
125
0.1
3.7
MHz
ps
Deterministic Jitter; NOTE 1
Random Jitter; NOTE 1
tRJ
ps
RMS of Total Distribution (σ);
tRMS
tp-p
3.7
30
ps
ps
NOTE 1
Peak-to-Peak Jitter; NOTE 1
Time at minimum operating voltage
to be 0 s
tOSC
Oscillation Start Up Time
10
ms
tR / tF
odc
Output Rise/Fall Time
Output Duty Cycle
20% to 80%
250
48
900
52
ps
%
Outputs terminated with 50Ω to VDDO/2. See Parameter Measurement Information Section,
"3.3V Output Load Test Circuit".
NOTE 1: Measured using Wavecrest SIA-3000.
840AG-125
www.icst.com/products/hiperclocks.html
REV.A FEBRUARY 3, 2006
4
ICS840-125
125MHZ, LVCMOS/LVTTL
OSCILLATOR REPLACEMENT
Integrated
Circuit
Systems, Inc.
PARAMETER MEASUREMENT INFORMATION
1.65V 0.15V
VDDO
2
SCOPE
VDD,
VDDO
Q
tPW
Qx
tPERIOD
LVCMOS
GND
tPW
x 100%
odc =
tPERIOD
-1.65V 0.15V
3.3V OUTPUT LOAD AC TEST CIRCUIT
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
80%
tF
80%
20%
20%
Clock
Outputs
tR
OUTPUT RISE/FALL TIME
840AG-125
www.icst.com/products/hiperclocks.html
REV.A FEBRUARY 3, 2006
5
ICS840-125
125MHZ, LVCMOS/LVTTL
OSCILLATOR REPLACEMENT
Integrated
Circuit
Systems, Inc.
APPLICATION INFORMATION
CRYSTAL INPUT INTERFACE
The ICS840-125 has been characterized with 18pF parallel lel resonant crystal and were chosen to minimize the ppm
resonant crystals. The capacitor values, C1 and C2, shown in error.The optimum C1 and C2 values can be slightly adjusted
Figure 1 below were determined using a 25MHz, 18pF paral- for different board layouts.
XTAL_OUT
C1
12p
X1
18pF Parallel Crystal
XTAL_IN
C2
12p
Figure 1. CRYSTAL INPUt INTERFACE
840AG-125
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REV.A FEBRUARY 3, 2006
6
ICS840-125
125MHZ, LVCMOS/LVTTL
OSCILLATOR REPLACEMENT
Integrated
Circuit
Systems, Inc.
RELIABILITY INFORMATION
TABLE 7A. θJAVS. AIR FLOWT ABLE FOR 8 LEAD TSSOP
θJA byVelocity (Meters per Second)
0
1
2.5
89.8°C/W
Multi-Layer PCB, JEDEC Standard Test Boards
101.7°C/W
90.5°C/W
TABLE 7B. θJAVS. AIR FLOWT ABLE 8 LEAD SOIC
θ
JA by Velocity (Linear Feet per Minute)
0
200
128.5°C/W
103.3°C/W
500
115.5°C/W
97.1°C/W
Single-Layer PCB, JEDEC Standard Test Boards
Multi-Layer PCB, JEDEC Standard Test Boards
153.3°C/W
112.7°C/W
NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.
TRANSISTOR COUNT
The transistor count for ICS840-125 is: 2423
840AG-125
www.icst.com/products/hiperclocks.html
REV.A FEBRUARY 3, 2006
7
ICS840-125
125MHZ, LVCMOS/LVTTL
OSCILLATOR REPLACEMENT
Integrated
Circuit
Systems, Inc.
PACKAGE OUTLINE - G SUFFIX FOR 8 LEAD TSSOP
PACKAGE OUTLINE - M SUFFIX FOR 8 LEAD SOIC
TABLE 8A. PACKAGE DIMENSIONS
TABLE 8B. PACKAGE DIMENSIONS
Millimeters
SYMBOL
Millimeters
SYMBOL
Minimum
Maximum
MINIMUM
MAXIMUM
N
A
8
N
A
A1
B
C
D
E
e
8
--
1.20
0.15
1.05
0.30
0.20
3.10
1.35
0.10
0.33
0.19
4.80
3.80
1.75
0.25
0.51
0.25
5.00
4.00
A1
A2
b
0.05
0.80
0.19
0.09
2.90
c
D
E
6.40 BASIC
0.65 BASIC
1.27 BASIC
E1
e
4.30
4.50
H
h
5.80
0.25
0.40
0°
6.20
0.50
1.27
8°
L
0.45
0°
0.75
8°
L
α
α
aaa
--
0.10
Reference Document: JEDEC Publication 95, MS-012
840AG-125
www.icst.com/products/hiperclocks.html
REV.A FEBRUARY 3, 2006
8
ICS840-125
125MHZ, LVCMOS/LVTTL
OSCILLATOR REPLACEMENT
Integrated
Circuit
Systems, Inc.
TABLE 9. ORDERING INFORMATION
Part/Order Number
ICS840AG-125
Marking
AG125
AG125
TBD
Package
8 lead TSSOP
Shipping Packaging Temperature
tube
2500 tape & reel
tube
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
ICS840AG-125T
ICS840AG-125LF
ICS840AG-125LFT
8 lead TSSOP
8 lead "Lead-Free" TSSOP
8 lead "Lead-Free" TSSOP
8 lead SOIC
TBD
2500 tape & reel
tube
ICS840AM-125
ICS840AM-125T
ICS840AM-125LF
ICS840AM-125LFT
840AM125
840AM125
TBD
8 lead SOIC
2500 tape & reel
tube
8 lead "Lead-Free" SOIC
8 lead "Lead-Free" SOIC
TBD
2500 tape & reel
NOTE: Parts that are ordered with an "LF" suffix to the part number are the Pb-Free configuration and are RoHS compliant.
The aforementioned trademark, HiPerClockS is a trademark of Integrated Circuit Systems, Inc. or its subsidiaries in the United States and/or other countries.
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 applications. Any other applications such as those requiring extended temperature range, 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.
840AG-125
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REV.A FEBRUARY 3, 2006
9
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