Datasheet > 843101AGI-250T

843101AGI-250T

更新时间： 2024-11-12 06:35:03

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
17页	422K
描述
PLL/Frequency Synthesis Circuit

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数据手册

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843101AGI-250T 数据手册

PRELIMINARY

ICS843101I-250

Integrated

Circuit

Systems, Inc.

FEMTOCLOCKS™ C RYSTAL-TO-LVPECL

250MHZ FREQUENCY MARGINING SYNTHESIZER

GENERAL DESCRIPTION

FEATURES

• One 250MHz nominal LVPECL output

The ICS843101I-250 is a low phase-noise

ICS

frequency margining synthesizer with fre-

quency margining capability and is a member of

the HiPerClockS™ family of high performance

clock solutions from ICS. In the default mode,

• Selectable crystal oscillator interface designed for

25MHz, 18pF parallel resonant crystal or LVCMOS/LVTTL

single-ended input

HiPerClockS™

• Output frequency can be varied in 2% steps from

nominal

the device nominally generates a 250MHz LVPECL output

clock signal from a 25MHz crystal input. There is also a

frequency margining mode available where the device can

be programmed, using the serial interface, to vary the

output frequency up or down from nominal in 2% steps.

The ICS843101I-250 is provided in a 16-pin TSSOP.

• VCO range: 1.125GHz - 1.375GHz

• RMS phase jitter @ 250MHz, using a 25MHz crystal

(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 and lead-free RoHS-compliant

packages

BLOCK DIAGRAM

PIN ASSIGNMENT

Pullup

VEE

S_LOAD

S_DATA

S_CLOCK

SEL

MODE

V^CCO

V^EE

CLK

XTAL_OUT

XTAL_IN

Pulldown

CLK

25MHz

Phase

Detector

÷ P

VCO

÷ N

560 - 690MHz

XTAL_IN

V^CCA

OSC

XTAL_OUT

SEL

VCC

Pulldown

÷ M

ICS843101I-250

16-Lead TSSOP

4.4mm x 5.0mm x 0.92mm

package body

Pulldown

S_CLOCK

S_DATA

S_LOAD

MODE

Pulldown

Serial Control

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.

843101AGI-250

www.icst.com/products/hiperclocks.html

REV.A NOVEMBER 1, 2005

12 3 4 5 6 7...17

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