Datasheet > 843004-01

843004-01

更新时间： 2024-11-03 01:11:55

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
17页	288K
描述
Femtoclocks Crystal-to-3.3V LVPECL Frequency Synthesizer

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843004-01 数据手册

Femtoclocks® Crystal-to-3.3V

LVPECL Frequency Synthesizer

843004-01

Data Sheet

GENERAL DESCRIPTION

FEATURES

The 843004-01 is a 4 output LVPECL synthesizer optimized to

generate Ethernet reference clock frequencies and is a member

of the family of high performance clock solutions from IDT. Using

a 25MHz 18pF parallel resonant crystal, the following frequencies

can be generated based on the settings of 2 frequency select pins

(F_SEL[1:0]): 156.25MHz, 125MHz, 62.5MHz. The 843004-01

• Four 3.3V LVPECL outputs

• Selectable crystal oscillator interface

or LVCMOS/LVTTL single-ended input

• Supports the following output frequencies:

156.25MHz, 125MHz and 62.5MHz

uses IDT’s 3 generation low phase noise VCO technology and

• VCO range: 560MHz - 680MHz

can achieve 1ps or lower typical rms phase jitter, easily meeting

Ethernet jitter requirements.The 843004-01 is packaged in a small

24-pin TSSOP package.

• RMS phase jitter @ 156.25MHz, using a 25MHz crystal

(1.875MHz - 20MHz): 0.57ps (typical)

• RMS phase noise at 156.25MHz (typical)

Phase noise:

Offset

Noise Power

100Hz ................-95.5 dBc/Hz

1kHz .................-118 dBc/Hz

10kHz .................-126 dBc/Hz

100kHz ..............-126.6 dBc/Hz

• Full 3.3V supply mode

• -30°C to 85°C ambient operating temperature

• Available in lead-free RoHS compliant package

FREQUENCY SELECT FUNCTION TABLE

PIN ASSIGNMENT

Inputs

Output Frequency

M Divider N Divider

Value

M/N

Divider Value

nQ1

nQ2

(25MHz Ref.)

F_SEL1 F_SEL0

V^CCO

Value

V^CCo

6.25

156.25

125

nQ0

nPLL_SEL

nQ3

V^EE

VCC

nXTAL_SEL

TEST_CLK

V^EE

XTAL_IN

XTAL_OUT

2.5

62.5

not used

V^CCA

F_SEL0

V^CC

BLOCK DIAGRAM

Pulldown

F_SEL1

F_SEL[1:0]

Pulldown

843004-01

nPLL_SEL

24-Lead TSSOP

4.40mm x 7.8mm x 0.92mm

package body

F_SEL[1:0]

Pulldown

0 0 ÷4

nQO

TEST_CLK

0 1 ÷5

G Package

Top View

25MHz

XTAL_IN

1 0 ÷10

1 1 ^{not used}

VCO

625MHz

(w/25MHz

Reference)

nQ1

Phase

Detector

OSC

XTAL_OUT

Pulldown

nXTAL_SEL

nQ2

M = 25 (fixed)

nQ3

Pulldown

Revision B January 18, 2016

12 3 4 5 6 7...17

中文翻译

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与843004-01相关器件

型号	品牌	获取价格	描述	数据表
843004AG-01LF	IDT	获取价格	Femtoclocks Crystal-to-3.3V LVPECL Frequency Synthesizer
843004AG-01LFT	IDT	获取价格	Femtoclocks Crystal-to-3.3V LVPECL Frequency Synthesizer
843004AG-02LF	IDT	获取价格	Clock Generator, 680MHz, PDSO24, 4.40 X 7.80 MM, 0.92 MM HEIGHT, ROHS COMPLIANT, MO-153, T
843004AG-02LFT	IDT	获取价格	Clock Generator, 680MHz, PDSO24, 4.40 X 7.80 MM, 0.92 MM HEIGHT, ROHS COMPLIANT, MO-153, T
843004AG-125LF	IDT	获取价格	FemtoClock™ Crystal-to-3.3V LVPECL Frequency
843004AG-125LFT	IDT	获取价格	FemtoClock™ Crystal-to-3.3V LVPECL Frequency
843004AGI-01LF	IDT	获取价格	FemtoClock Crystal-to-3.3V, 2.5V LVPECL Frequency Synthesizer
843004AGI-01LFT	IDT	获取价格	FemtoClock Crystal-to-3.3V, 2.5V LVPECL Frequency Synthesizer
843004AGI-04LF	IDT	获取价格	FemtoClock Crystal/LVCMOS-to- 3.3V LVPECL Frequency Synthesizer
843004AGI-04LFT	IDT	获取价格	FemtoClock Crystal/LVCMOS-to- 3.3V LVPECL Frequency Synthesizer

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