Datasheet > ICS40004AI01

ICS40004AI01

更新时间： 2024-09-26 04:22:55

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
16页	320K
描述
FEMTOCLOCKS⑩ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER

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ICS40004AI01 数据手册

ICS840004I-01

FEMTOCLOCKS™ C RYSTAL-TO-

LVCMOS/LVTTL FREQUENCY SYNTHESIZER

GENERAL DESCRIPTION

FEATURES

• Four LVCMOS/LVTTL outputs,

The ICS840004I-01 is a 4 output LVCMOS/LVTTL

ICS

17Ω typical output impedance

Synthesizer optimized to generate Ethernet

reference clock frequencies and is a member of

the HiPerClocks^TMfamily of high performance

clock solutions from IDT. Using a 25MHz, 18pF

HiPerClockS™

• Selectable crystal oscillator interface

or LVCMOS single-ended input

• Supports the following output frequencies: 156.25MHz,

125MHz and 62.5MHz

parallel resonant crystal, the following frequencies can be

generated based on the 2 frequency select pins (F_SEL1:0):

156.25MHz, 125MHz, and 62.5MHz.The ICS840004I-01 uses

IDT’s 3^rdgeneration low phase noise VCO technology and can

achieve 1ps or lower typical random rms phase jitter, easily

meeting Ethernet jitter requirements. The ICS840004I-01 is

packaged in a small 20-pin TSSOP package.

• VCO range: 560MHz - 700MHz

• RMS phase jitter @ 156.25MHZ (1.875MHz - 20MHz):

0.52ps (typical)

• Output supply modes:

Core/Output

3.3V/3.3V

3.3V/2.5V

2.5V/2.5V

• -40°C to 85°C ambient operating temperature

• Available in both standard (RoHS 5) and lead-free RoHS

(6) packages

FREQUENCY SELECT FUNCTION TABLE

Inputs

M Divider N Divider

Value

Output Frequency (MHz)

(25MHz Ref.)

M/N

Ratio Value

F_SEL1 F_SEL0

Value

6.25

156.25

125

2.5

62.5

125 (default)

BLOCK DIAGRAM

PIN ASSIGNMENT

Pullup

F_SEL1

GND

F_SEL0

Pullup:Pullup

F_SEL1:0

nXTAL_SEL

REF_CLK

nPLL_SEL

V^DDA

V^DDO

GND

XTAL_IN

XTAL_OUT

Pulldown

nPLL_SEL

Pulldown

nXTAL_SEL

25MHz

XTAL_IN

V^DD

F_SEL1:0

OSC

0 0 ÷4

XTAL_OUT

Pulldown

ICS840004I-01

20-Lead TSSOP

6.5mm x 4.4mm x 0.92mm

package body

0 1 ÷5

Phase

Detector

REF_CLK

VCO

1 0 ÷10

1 1 ÷5 (default)

G Package

Top View

M = ÷25 (fixed)

Pulldown

840004AGI-01

REV.A OCTOBER 22, 2007

12 3 4 5 6 7...16

中文翻译

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