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M908-02-175.0000LF

Description
Clock Generator, 175MHz, CQCC36, 9 X 9 MM, CERAMIC, LCC-36
CategoryThe embedded processor and controller    Microcontrollers and processors   
File Size226KB,6 Pages
ManufacturerIDT (Integrated Device Technology)
Environmental Compliance
Download Datasheet Parametric View All

M908-02-175.0000LF Overview

Clock Generator, 175MHz, CQCC36, 9 X 9 MM, CERAMIC, LCC-36

M908-02-175.0000LF Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
Parts packaging codeLCC
package instructionQCCN,
Contacts36
Reach Compliance Codecompli
ECCN codeEAR99
JESD-30 codeS-CQCC-N36
JESD-609 codee3
length8.99 mm
Number of terminals36
Maximum operating temperature70 °C
Minimum operating temperature
Maximum output clock frequency175 MHz
Package body materialCERAMIC, METAL-SEALED COFIRED
encapsulated codeQCCN
Package shapeSQUARE
Package formCHIP CARRIER
Peak Reflow Temperature (Celsius)260
Master clock/crystal nominal frequency19.44 MHz
Certification statusNot Qualified
Maximum seat height3.1 mm
Maximum supply voltage3.465 V
Minimum supply voltage3.135 V
Nominal supply voltage3.3 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceMATTE TIN
Terminal formNO LEAD
Terminal pitch0.635 mm
Terminal locationQUAD
Maximum time at peak reflow temperature30
width8.99 mm
uPs/uCs/peripheral integrated circuit typeCLOCK GENERATOR, OTHER
Base Number Matches1
Integrated
Circuit
Systems, Inc.
Preliminary Information
M908-02
VCSO B
ASED
C
LOCK
G
ENERATOR
P
IN
A
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
DNC
DNC
27
26
25
24
23
22
21
20
19
G
ENERAL
D
ESCRIPTION
The M908-02 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. From the
M908-02-155.5200
, an output clock
frequency of
155.52
MHz is provided
from eight LVPECL clock output
pairs. (Other frequencies are available; consult factory.)
The accuracy of the output frequency is assured by the
internal PLL that phase-locks the internal VCSO to the
reference input frequency (
19.44
MHz for the
M908-02-155.5200
). 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.
28
29
30
31
32
33
34
35
36
M908-02
(Top View)
18
17
16
15
14
13
12
11
10
nFOUT2
FOUT2
nFOUT1
FOUT1
GND
nFOUT0
FOUT0
VCC
GND
F
EATURES
Output clock frequency range 75MHz to 175MHz
(Consult factory for frequency availability)
Eight identical LVPECL output pairs
Jitter 0.7ps rms (at 155.52MHz, over 12kHz-20MHz), typ.
Ideal for OC-48/STM-16 clock reference
Output-to-output skew < 100ps
External XTAL or LVCMOS reference input
Integrated SAW (surface acoustic wave) delay line
Single 3.3V power supply
Small 9 x 9 mm SMT (surface mount) package
Figure 1: Pin Assignment
Example Output Frequency Configurations
(
M908-02-155.5200
)
VCSO and
Ref Clock
PLL
Output
Frequency Multiplication
Frequency
(MHz)
Ratio
(MHz)
19.44
8
155.52
Application
GND
GND
GND
OP_IN
nOP_OUT
nVC
VC
OP_OUT
nOP_IN
1
2
3
4
5
6
7
8
9
OC-48/STM-16
Table 1: Example Output Frequency Configurations
S
IMPLIFIED
B
LOCK
D
IAGRAM
M908-02-155.52 (Other Frequencies Available)
VSCO
External
Crystal
or
Reference
Clock Input
(19.44MHz)
XTAL
OSC
Frequency
Multiplying
PLL
LVPECL
Output
Clock Pairs
(155.52MHz)
External Loop Filter
Figure 2: Simplified Block Diagram
M908-02 Datasheet Rev 0.4
M908-02 VCSO Based Clock Generator
Revised 30Jul2004
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