ICS840002-32 [ICSI]
FEMTOCLOCKS? CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER; FEMTOCLOCKS⑩ CRYSTAL -TO LVCMOS / LVTTL频率合成器
| 型号： | ICS840002-32 |
| 厂家： | 
INTEGRATED CIRCUIT SOLUTION INC |
| 描述： | FEMTOCLOCKS? CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| 文件： | 总8页 (文件大小：140K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PRELIMINARY
ICS840002-32
Integrated
Circuit
Systems, Inc.
FEMTOCLOCKS™ CRYSTAL-TO-
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
GENERAL DESCRIPTION
FEATURES
• Two LVCMOS/LVTTL outputs, 15Ω typical output impedance
• Crystal oscillator interface
The ICS840002-32 is a 2 output LVCMOS/
ICS
LVTTL Synthesizer optimized to generate
Fibre Channel or Serial ATA reference clock
frequencies and is a member of the
HiPerClocksTM family of high performance
HiPerClockS™
• Output frequency range: 75MHz and 106.25MHz,
or 212.5MHz
• RMS phase jitter at 106.25MHZ (637kHz - 5MHz):
0.86ps (typical)
clock solutions from ICS. Using an 18pF parallel resonant
crystal, the following frequencies can be generated based
on 1 frequency select pin (SEL): 106.25MHz and 75MHz,
or 212.5MHz. The ICS840002-32 uses ICS’ 3rd generation
low phase noise VCO technology and can achieve 1ps or
lower typical rms phase jitter, easily meeting Fibre Channel
and Serial ATA jitter requirements. The ICS840002-32 is
packaged in a small 8-pin TSSOP package.
• Full 3.3V or 3.3V core/2.5V output supply mode
• 0°C to 70°C ambient operating temperature
SELECT FUNCTION TABLE
Input
SEL
0
Output Frequency Range (MHz)
Q0
75
75
Q1
106.25
212.5
1
BLOCK DIAGRAM
PIN ASSIGNMENT
26.5625MHz
XTAL_IN
Q0
Q1
VDD
XTAL_OUT
XTAL_IN
GND
SEL
Q0
VDDO
Q1
1
2
3
4
8
7
6
5
FemtoClock™
XTAL_OUT
ICS840002-32
8-Lead TSSOP
4.40mm x 3.0mm x 0.925mm
package body
SEL
G Package
Top View
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, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.
840002BG-32
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2005
1
PRELIMINARY
ICS840002-32
Integrated
Circuit
Systems, Inc.
FEMTOCLOCKS™ C RYSTAL-TO-
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
TABLE 1. PIN DESCRIPTIONS
Number
Name
Type
Description
1
VDD
Power
Input
Core supply pin.
2,
3
XTAL_OUT,
XTAL_IN
Crystal oscillator interface.
Power supply ground.
4
GND
Power
Output
Single-ended clock outputs. LVCMOS/LVTTL interface levels.
15Ω typical output impedence.
5, 7
Q1, Q0
1
8
VDDO
SEL
Power
Input
Output supply pin.
Pulldown Select pin. LVCMOS/LVTTL interface levels.
NOTE: Pulldown refers to internal input resistors. See Table 2, Pin Characteristics, for typical values.
TABLE 2. PIN CHARACTERISTICS
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
CIN
Input Capacitance
4
pF
pF
pF
kΩ
Ω
VDD, VDDO = 3.465V
TBD
TBD
51
CPD
Power Dissipation Capacitance
V
DD = 3.465V, VDDO = 2.625V
RPULLDOWN Input Pulldown Resistor
ROUT
Output Impedance
15
840002BG-32
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2005
2
PRELIMINARY
ICS840002-32
Integrated
Circuit
Systems, Inc.
FEMTOCLOCKS™ CRYSTAL-TO-
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
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.Functional
operation of product at these conditions or any conditions be-
yond those listed in the DC Characteristics or AC Character-
istics is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect product reliability.
DD
Inputs, V
-0.5V to VDD + 0.5V
-0.5V to VDDO + 0.5V
101.7°C/W (0 mps)
-65°C to 150°C
I
Outputs, VO
PackageThermal Impedance, θ
JA
StorageTemperature, T
STG
TABLE 3A. POWER SUPPLY DC CHARACTERISTICS, VDD = VDDO = 3.3V 5ꢀ, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum
3.135
Typical
3.3
Maximum Units
VDD
VDDO
IDD
Core Supply Voltage
3.465
3.465
V
Output Supply Voltage
Power Supply Current
Output Supply Current
3.135
3.3
V
TBD
TBD
mA
mA
IDDO
TABLE 3B. POWER SUPPLY DC CHARACTERISTICS, VDD = 3.3V 5ꢀ, VDDO = 2.5V 5ꢀ, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum
3.135
Typical
3.3
Maximum Units
VDD
VDDO
IDD
Core Supply Voltage
3.465
2.625
V
Output Supply Voltage
Power Supply Current
Output Supply Current
2.375
2.5
V
TBD
TBD
mA
mA
IDDO
TABLE 3C. LVCMOS/LVTTL DC CHARACTERISTICS, VDD = 3.3V 5ꢀ, VDDO = 3.3V 5ꢀ OR 2.5V 5ꢀ, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
VIH
Input High Voltage SEL
2
VDD + 0.3
V
VIL
IIH
Input Low Voltage SEL
Input High Current SEL
Input Low Current SEL
-0.3
0.8
5
V
µA
µA
V
VDD = VIN = 3.465V
VDD = 3.465V, VIN = 0V
VDDO = 3.3V 5ꢀ
IIL
-150
2.6
VOH
Output High Voltage; NOTE 1
VDDO = 2.5V 5ꢀ
1.8
V
VOL
Output Low Voltage; NOTE 1
VDDO = 3.3V or 2.5V 5ꢀ
0.5
V
NOTE 1: Outputs terminated with 50Ω to VDDO/2. See Parameter Measurement Information, Output Load Test Circuit.
TABLE 4. CRYSTAL CHARACTERISTICS
Parameter
Test Conditions
Minimum
Fundamental
26.5625
Typical Maximum Units
Mode of Oscillation
Frequency
MHz
Ω
Equivalent Series Resistance (ESR)
Shunt Capacitance
Drive Level
50
7
pF
1
mW
NOTE: Characterized using an 18pF parallel resonant crystal.
840002BG-32
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2005
3
PRELIMINARY
ICS840002-32
Integrated
Circuit
Systems, Inc.
FEMTOCLOCKS™ C RYSTAL-TO-
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
TABLE 5A. AC CHARACTERISTICS, VDD = VDDO = 3.3V 5ꢀ, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
212.5
106.25
75
MHz
fOUT
Output Frequency Range
tsk(o)
Output Skew; NOTE 1, 3
TBD
ps
ps
212.5MHz @ Integration Range:
2.55MHz - 20MHz
106.25MHz @ Integration Range:
637kHz - 5MHz
75MHz @ Integration Range:
12kHz - 20MHz
0.50
0.86
TBD
RMS Phase Jitter (Random);
NOTE 2
tjit(Ø)
ps
ps
tR / tF
odc
Output Rise/Fall Time
Output Duty Cycle
20ꢀ to 80ꢀ
400
50
ps
ꢀ
NOTE 1: Defined as skew between outputs at the same supply voltages and with equal load conditions.
Measured at VDDO/2.
NOTE 2: Please refer to the Phase Noise Plot.
NOTE 3: This parameter is defined in accordance with JEDEC Standard 65.
TABLE 5B. AC CHARACTERISTICS, VDD = 3.3V 5ꢀ, VDDO = 2.5V 5ꢀ, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum Units
212.5
106.25
75
MHz
fOUT
Output Frequency Range
tsk(o)
Output Skew; NOTE 1, 3
TBD
ps
ps
212.5MHz @ Integration Range:
2.55MHz - 20MHz
106.25MHz @ Integration Range:
637kHz - 5MHz
75MHz @ Integration Range:
12kHz - 20MHz
0.57
1.1
RMS Phase Jitter (Random);
NOTE 2
tjit(Ø)
ps
ps
TBD
tR / tF
odc
Output Rise/Fall Time
Output Duty Cycle
20ꢀ to 80ꢀ
450
50
ps
ꢀ
NOTE 1: Defined as skew between outputs at the same supply voltages and with equal load conditions.
Measured at VDDO/2.
NOTE 2: Please refer to the Phase Noise Plot.
NOTE 3: This parameter is defined in accordance with JEDEC Standard 65.
840002BG-32
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2005
4
PRELIMINARY
ICS840002-32
Integrated
Circuit
Systems, Inc.
FEMTOCLOCKS™ CRYSTAL-TO-
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
PARAMETER MEASUREMENT INFORMATION
1.65V 5ꢀ
2.05V 5ꢀ 1.25V 5ꢀ
SCOPE
SCOPE
VDD
VDDO
,
VDD
VDDO
Qx
Qx
LVCMOS
LVCMOS
GND
GND
-1.65V 5ꢀ
-1.25V 5ꢀ
3.3V CORE/3.3V OUTPUT LOAD AC TEST CIRCUIT
3.3V CORE/2.5V OUTPUT LOAD AC TEST CIRCUIT
Phase Noise Plot
VDDO
Qx
Qy
2
Phase Noise Mask
VDDO
2
tsk(o)
Offset Frequency
f1
f2
RMS Jitter = Area Under the Masked Phase Noise Plot
RMS PHASE JITTER
OUTPUT SKEW
VDDO
2
80ꢀ
tF
80ꢀ
tR
Q0, Q1
tPW
20ꢀ
20ꢀ
tPERIOD
Clock
Outputs
tPW
x 100ꢀ
odc =
tPERIOD
OUTPUT RISE/FALL TIME
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
840002BG-32
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2005
5
PRELIMINARY
ICS840002-32
Integrated
Circuit
Systems, Inc.
FEMTOCLOCKS™ C RYSTAL-TO-
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
APPLICATION INFORMATION
CRYSTAL INPUT INTERFACE
The ICS840002-32 has been characterized with 18pF paral-
below were determined using an 18pF parallel resonant crys-
lel resonant crystals.The capacitor values shown in Figure 1 tal and were chosen to minimize the ppm error.
XTAL_OUT
C1
33p
X1
18pF Parallel Crystal
XTAL_IN
C2
27p
ICS840002-32
Figure 1. CRYSTAL INPUt INTERFACE
RELIABILITY INFORMATION
TABLE 6. θJAVS. AIR FLOW TABLE 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
TRANSISTOR COUNT
The transistor count for ICS840002-32 is: 2322
840002BG-32
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2005
6
PRELIMINARY
ICS840002-32
Integrated
Circuit
Systems, Inc.
FEMTOCLOCKS™ CRYSTAL-TO-
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
PACKAGE OUTLINE - G SUFFIX FOR 8 LEAD TSSOP
TABLE 7. PACKAGE DIMENSIONS
Millimeters
Minimum Maximum
SYMBOL
N
A
8
--
1.20
0.15
1.05
0.30
0.20
3.10
A1
A2
b
0.05
0.80
0.19
0.09
2.90
c
D
E
6.40 BASIC
0.65 BASIC
E1
e
4.30
4.50
L
0.45
0°
0.75
8°
α
aaa
--
0.10
Reference Document: JEDEC Publication 95, MO-153
840002BG-32
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2005
7
PRELIMINARY
ICS840002-32
Integrated
Circuit
Systems, Inc.
FEMTOCLOCKS™ C RYSTAL-TO-
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
TABLE 8. ORDERING INFORMATION
Part/Order Number
ICS840002BG-32
ICS840002BG-32T
Marking
02B32
Package
Shipping Packaging Temperature
8 lead TSSOP
8 lead TSSOP
tube
0°C to 70°C
0°C to 70°C
02B32
2500 tape & reel
The aforementioned trademarks, HiPerClockS and FEMTOCLOCKS are trademarks 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.
840002BG-32
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2005
8
相关型号：
ICS840002AG-01LF
Clock Generator, 175MHz, PDSO16, 4.40 X 5 MM, 0.92 MM HEIGHT, ROHS COMPLIANT, MO-153, TSSOP-16
IDT
ICS840002AG-01LFT
Clock Generator, 175MHz, PDSO16, 4.40 X 5 MM, 0.92 MM HEIGHT, ROHS COMPLIANT, MO-153, TSSOP-16
IDT
©2020 ICPDF网 联系我们和版权申明