ICS840001CK-32T [ICSI]

FEMTOCLOCKS-TM CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER; FEMTOCLOCKS -TM CRYSTAL -TO LVCMOS / LVTTL频率合成器


型号：	ICS840001CK-32T
厂家：	INTEGRATED CIRCUIT SOLUTION INC
描述：	FEMTOCLOCKS-TM CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER FEMTOCLOCKS -TM CRYSTAL -TO LVCMOS / LVTTL频率合成器晶体外围集成电路时钟
文件：	总10页 (文件大小：180K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

PRELIMINARY

ICS840001-32

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ C RYSTAL-TO-

LVCMOS/LVTTL FREQUENCY SYNTHESIZER

GENERAL DESCRIPTION

FEATURES

The ICS840001-32 is a two output LVCMOS/ • One LVCMOS/LVTTL output, 15Ω typical output

ICS

LVTTL Synthesizer and is a member of the

HiPerClocks^TMfamily of high performance

devices from ICS. The device uses a 40MHz

crystal to provide a 40MHz reference clock

impedence and one reference clock output

• 40MHz, 10pF parallel resonant crystal

• Output frequencies: 100MHz or 106.25MHz

HiPerClockS™

output and to synthesize a 100MHz or 106.25MHz

output. The ICS840001-32 has excellent <1ps phase

jitter performance over the 637kHz – 5MHz integration

range. The ICS840001-32 is packaged in a 3mm x 3mm

16-pin VFQFN, making it ideal for use on space con-

strained boards.

• RMS phase jitter @ 106.25MHz, using a 40MHz crystal

(637kHz - 5MHz): 0.78ps (typical)

• 3.3V operating supply

• 0°C to 70°C ambient operating temperature

• Availabe in both standard and lead-free RoHS-compliant

packages

FUNCTION TABLE

Inputs

Outputs

Crystal Frequency

(MHz)

Q Output

Frequency (MHz)

REF_OUT

Frequency (MHz)

SEL Input

100

106.25

BLOCK DIAGRAM

PIN ASSIGNMENT

40MHz

REF_OUT

16 15 14 13

VDD

XTAL_OUT

11 VDDO_Q

10 VDD

100MHz or

106.25MHz

XTAL_IN

SEL

XTAL_IN

OSC

Synthesizer

REF_OUT

XTAL_OUT

(Pullup)

SEL

ICS840001-32

16-LeadVFQFN

3mm x 3mm x 0.95 package body

K 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.

840001CK-32

www.icst.com/products/hiperclocks.html

REV.A NOVEMBER 23, 2005

PRELIMINARY

ICS840001-32

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ C RYSTAL-TO-

LVCMOS/LVTTL FREQUENCY SYNTHESIZER

TABLE 1. PIN DESCRIPTIONS

Number

Name

Type

Description

1, 10

V_DD

Power

Input

Core supply pin.

XTAL_OUT,

XTAL_IN

Crystal oscillator interface. XTAL_IN is the input.

XTAL_OUT is the output.

2, 3

SEL

GND

Input

Pullup

Select input. LVCMOS/LVTTL interface levels.

Power supply ground.

5, 8, 13

6, 14, 15

Power

Unused

Power

No connect.

V_{DDO_REF_OUT}

Output supply pin for REF_OUT output

Single-ended three-state reference clock output.

LVCMOS/LVTTL interface levels. 15Ω typical output impedance.

Output supply pin for Q output.

REF_OUT

V_{DDO_Q}

Output

Power

Output

Power

Single-ended clock output. LVCMOS/LVTTL interface levels.

15Ω typical output impedance.

Analog supply pin.

V_DDA

NOTE: Pullup 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

C_IN

Input Capacitance

V_DD, V_DDA,V_{DDO_REF_OUT,}V_{DDO_Q}

3.465V

C_PD

Power Dissipation Capacitance

R_PULLUP

R_OUT

Input Pullup Resistor

Output Impedance

kΩ

840001CK-32

www.icst.com/products/hiperclocks.html

REV.A NOVEMBER 23, 2005

PRELIMINARY

ICS840001-32

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ C RYSTAL-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.

Inputs, V

-0.5V to V_DD+ 0.5 V

-0.5V to V_DDO+ 0.5V

51.5°C/W (0 lfpm)

-65°C to 150°C

Outputs, V_O

PackageThermal Impedance, θ

StorageTemperature, T

STG

TABLE 3A. POWER SUPPLY DC CHARACTERISTICS, V_DD=V_DDA=V_{DDO_REF_OUT}=V_{DDO_Q}= 3.3V 5ꢀ, TA = 0°C TO 70°C

Symbol Parameter

Test Conditions

Minimum

3.135

Typical

3.3

Maximum Units

V_DD

V_DDA

V_DDO

I_DD

Core Supply Voltage

3.465

Analog Supply Voltage

Output Supply Voltage

Power Supply Current

Analog Supply Current

Output Supply Current

3.135

3.3

3.135

3.3

I_DDA

I_DDO

TABLE 3B. LVCMOS/LVTTL DC CHARACTERISTICS, V_DD= V_DDA= V_{DDO_REF_OUT}=V_{DDO_Q}= 3.3V 5ꢀ, TA = 0°C TO 70°C

Symbol Parameter

Test Conditions

Minimum Typical Maximum Units

V_IH

V_IL

I_IH

Input High Voltage

V_DD+ 0.3

Input Low Voltage

-0.3

0.8

Input High Current

V_DD= V_IN= 3.465V

µA

I_IL

Input Low Current

V_DD= 3.465V, V_IN= 0V

-150

2.6

V_OH

V_OL

Output High Voltage; NOTE 1

Output Low Voltage; NOTE 1

0.5

NOTE 1: Outputs terminated with 50Ω to V_{DDO_x}/2 See Parameter Measurement Information Section,

"3.3V Output Load Test Circuit".

TABLE 4. CRYSTAL CHARACTERISTICS

Parameter

Test Conditions

Minimum

Typical Maximum Units

Fundamental

Mode of Oscillation

Frequency

MHz

Equivalent Series Resistance (ESR)

Shunt Capacitance

Drive Level

100

µW

840001CK-32

www.icst.com/products/hiperclocks.html

REV.A NOVEMBER 23, 2005

PRELIMINARY

ICS840001-32

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ C RYSTAL-TO-

LVCMOS/LVTTL FREQUENCY SYNTHESIZER

TABLE 5. AC CHARACTERISTICS, V_DD=V_DDA=V_{DDO_REF_OUT}=V_{DDO_Q}= 3.3V 5ꢀ, TA = 0°C TO 70°C

Symbol Parameter

Test Conditions

f_SEL = 0

Minimum Typical Maximum Units

REF_OUT

100

MHz

f_OUT

Output Frequency

f_SEL = 1

106.25

100MHz, Integration Range:

637kHz to 5MHz

106.25MHz, Integration Range:

637kHz to 5MHz

0.83

0.78

tjit(Ø)

RMS Phase Jitter (Random)

t_R/ t_F

odc

Output Rise/Fall Time

Output Duty Cycle

20ꢀ to 80ꢀ

900

ꢀ

All parameters are characterized @ 100MHz and 106.25MHz.

840001CK-32

www.icst.com/products/hiperclocks.html

REV.A NOVEMBER 23, 2005

PRELIMINARY

ICS840001-32

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ C RYSTAL-TO-

LVCMOS/LVTTL FREQUENCY SYNTHESIZER

TYPICAL PHASE NOISE AT 106.25MHZ

Fibre Channel Filter

-10

-20

-30

-40

-50

-60

-70

106.25MHz

RMS Phase Jitter (Random)

Raw Phase Noise Data

637kHz to 5MHz = 0.78ps (typical)

-80

-90

-100

-110

-120

-130

-140

-150

-160

-170

-180

-190

Phase Noise Result by adding

Fibre Channel Filter to raw data

-200

100

10k

100k

OFFSET FREQUENCY (HZ)

840001CK-32

www.icst.com/products/hiperclocks.html

REV.A NOVEMBER 23, 2005

PRELIMINARY

ICS840001-32

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ C RYSTAL-TO-

LVCMOS/LVTTL FREQUENCY SYNTHESIZER

PARAMETER MEASUREMENT INFORMATION

1.65V 5ꢀ

Phase Noise Plot

SCOPE

V_DD,

V_DDA,

V_{DDO_X}

Phase Noise Mask

LVCMOS

GND

Offset Frequency

f₁

f₂

-1.65V 5ꢀ

RMS Jitter = Area Under the Masked Phase Noise Plot

3.3V OUTPUT LOAD AC TEST CIRCUIT

RMS PHASE JITTER

V_DDOX

80ꢀ

t_F

80ꢀ

t_R

t_PW

20ꢀ

t_PERIOD

Clock

Outputs

t_PW

x 100ꢀ

odc =

t_PERIOD

OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD

OUTPUT RISE/FALL TIME

840001CK-32

www.icst.com/products/hiperclocks.html

REV.A NOVEMBER 23, 2005

PRELIMINARY

ICS840001-32

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ C RYSTAL-TO-

LVCMOS/LVTTL FREQUENCY SYNTHESIZER

APPLICATION INFORMATION

POWER SUPPLY FILTERING TECHNIQUES

As in any high speed analog circuitry, the power supply pins are

vulnerable to random noise.The ICS840001-32 provides sepa-

rate power supplies to isolate any high switching noise from

the outputs to the internal PLL. V_DD, V_DDAand V_{DDO_X}should be

individually connected to the power supply plane through

vias, and bypass capacitors should be used for each pin. To

achieve optimum jitter performance, power supply isolation

is required. Figure 1 illustrates how a 10Ω resistor along with

a 10μF and a .01μF bypass capacitor should be connected to

each V_DDApin. The 10Ω resistor can also be replaced by a

ferrite bead.

3.3V

V_DD

.01μF

10Ω

V_DDA

10μF

FIGURE 1. POWER SUPPLY FILTERING

CRYSTAL INPUT INTERFACE

The ICS840001-32 has been characterized with 10pF paral- parallel resonant crystal and were chosen to minimize the

lel resonant crystals.The capacitor values, C1 and C2, shown ppm error. The optimum C1 and C2 values can be slightly

in Figure 2 below were determined using a 40MHz, 10pF adjusted for different board layouts.

XTAL_IN

Crystal

XTAL_OUT

Figure 2. CRYSTAL INPUt INTERFACE

840001CK-32

www.icst.com/products/hiperclocks.html

REV.A NOVEMBER 23, 2005

PRELIMINARY

ICS840001-32

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ C RYSTAL-TO-

LVCMOS/LVTTL FREQUENCY SYNTHESIZER

RELIABILITY INFORMATION

TABLE 7. θ_JA^VS. AIR FLOW TABLE FOR 16 LEAD VFQFN

θ_JAvs. 0 Air Flow (Linear Feet per Minute)

Multi-Layer PCB, JEDEC Standard Test Boards

51.5°C/W

TRANSISTOR COUNT

The transistor count for ICS840001-32 is: 2121

840001CK-32

www.icst.com/products/hiperclocks.html

REV.A NOVEMBER 23, 2005

PRELIMINARY

ICS840001-32

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ C RYSTAL-TO-

LVCMOS/LVTTL FREQUENCY SYNTHESIZER

PACKAGE OUTLINE - K SUFFIX FOR 16 LEAD VFQFN

T^ABLE8. PACKAGE DIMENSIONS

JEDEC VARIATION

ALL DIMENSIONS IN MILLIMETERS

SYMBOL

MINIMUM

MAXIMUM

0.80

1.0

0.05

0.25 Reference

0.18

0.30

0.50 BASIC

N_D

N_E

3.0

0.25

1.25

3.0

0.25

0.30

1.25

0.50

Reference Document: JEDEC Publication 95, MO-220

840001CK-32

www.icst.com/products/hiperclocks.html

REV.A NOVEMBER 23, 2005

PRELIMINARY

ICS840001-32

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ C RYSTAL-TO-

LVCMOS/LVTTL FREQUENCY SYNTHESIZER

TABLE 9. ORDERING INFORMATION

Part/Order Number

ICS840001CK-32

Marking

Package

Shipping Packaging

tray

Temperature

0°C to 70°C

1C32

TBD

16 Lead VFQFN

ICS840001CK-32T

ICS840001CK-32LF

ICS840001CK-32LFT

16 Lead VFQFN

2500 tape & reel

tray

16 Lead "Lead-Free" VFQFN

2500 tape & reel

NOTE: Parts that are ordered with an "LF" suffix to the part number are the Pb-Free configuration and are RoHS complaint.

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.

840001CK-32

www.icst.com/products/hiperclocks.html

REV.A NOVEMBER 23, 2005

ICS840001CK-32T [ICSI]

相关型号：

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