M908-01I156.2500LF datasheet, PDF

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M908-01I156.2500LF: DescriptionClock Generator, 156.25MHz, CQCC36, 9 X 9 MM, CERAMIC, LCC-36; CategoryThe embedded processor and controller Microcontrollers and processors; File Size293KB，6 Pages; ManufacturerIDT (Integrated Device Technology); Environmental Compliance

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M908-01I156.2500LF Overview

Clock Generator, 156.25MHz, CQCC36, 9 X 9 MM, CERAMIC, LCC-36

M908-01I156.2500LF Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	IDT (Integrated Device Technology)
Parts packaging code	LCC
package instruction	QCCN,
Contacts	36
Reach Compliance Code	compliant
ECCN code	EAR99
JESD-30 code	S-CQCC-N36
JESD-609 code	e3
length	8.99 mm
Number of terminals	36
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Maximum output clock frequency	156.25 MHz
Package body material	CERAMIC, METAL-SEALED COFIRED
encapsulated code	QCCN
Package shape	SQUARE
Package form	CHIP CARRIER
Peak Reflow Temperature (Celsius)	260
Master clock/crystal nominal frequency	25 MHz
Certification status	Not Qualified
Maximum seat height	3.1 mm
Maximum supply voltage	3.465 V
Minimum supply voltage	3.135 V
Nominal supply voltage	3.3 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	MATTE TIN
Terminal form	NO LEAD
Terminal pitch	0.635 mm
Terminal location	QUAD
Maximum time at peak reflow temperature	30
width	8.99 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER

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Integrated

Circuit

Systems, Inc.

Product Data Sheet

M908-01

VCSO B

ASED

E C

LOCK

ENERATOR

SSIGNMENT

(9 x 9 mm SMT)

XTAL_1 / REF_IN

GND

nFOUT5

FOUT5

nFOUT4

FOUT4

nFOUT3

FOUT3

VCC

XTAL_2

FOUT6

nFOUT6

FOUT7

nFOUT7

VCC

DNC

ENERAL

ESCRIPTION

The M908-01 is a PLL (Phase Locked Loop) based

clock generator that uses an

internal VCSO (Voltage Controlled

SAW Oscillator) to produce a very

low jitter output clock. It is ideal for

Gigabit Ethernet. The output clock

(frequency of

156.25

187.50

MHz

for example) is provided from eight

LVPECL clock output pairs. (Specify frequency at time

of order.) The accuracy of the output frequency is

assured by the internal PLL, which phase-locks the

internal VCSO to the reference input frequency (

MHz for example). The input reference can either

be an external crystal, utilizing the internal crystal

oscillator, or a stable external clock source such as

a packaged crystal oscillator.

M908-01

(Top View)

nFOUT2

FOUT2

nFOUT1

FOUT1

GND

nFOUT0

FOUT0

VCC

GND

EATURES

◆

Output clock frequency from 125MHz to 190MHz

(Consult factory for frequency availability)

◆

Eight identical LVPECL output pairs

◆

Integrated SAW (surface acoustic wave) delay line

◆

Low jitter 0.7ps RMS (over 12kHz-20MHz)

◆

Ideal for Gigabit Ethernet clock reference

◆

Output-to-output skew < 100ps

◆

External XTAL or LVCMOS reference input

◆

Industrial temperature grade available

◆

Single 3.3V power supply

◆

Small 9 x 9 mm SMT (surface mount) package

Figure 1: Pin Assignment

Example Output Frequency Configurations

Ref Clock

Frequency

(MHz)

25/4

PLL

Ratio

Output

Frequency

(MHz)

125.00

156.25

187.50

Application

GND

OP_IN

nOP_OUT

nVC

OP_OUT

nOP_IN

GbE

10GbE

12GbE

Table 1: Example Output Frequency Configurations

Note 1:Specify output clock frequency at time of order

IMPLIFIED

LOCK

IAGRAM

M908-01

FOUT7

nFOUT7

VSCO

FOUT6

nFOUT6

FOUT5

nFOUT5

External

Crystal

Reference

Clock Input

(e.g., 25 or 30 MHz)

XTAL

OSC

Divider

Frequency

Multiplying

PLL

FOUT4

nFOUT4

FOUT3

nFOUT3

FOUT2

nFOUT2

FOUT1

nFOUT1

FOUT0

nFOUT0

LVPECL

Output

Clock Pairs

(e.g., 156.25

or 187.50MHz)

External Loop Filter

Figure 2: Simplified Block Diagram

M908-01 Datasheet Rev 2.1

M908-01 VCSO Based GbE Clock Generator

Revised 30Jul2004

●

Integrated Circuit Systems, Inc.

Communications Modules

●

w w w. i c s t . c o m

●

tel (508) 852-5400

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