M1025/26 Datasheet Rev 1.0 14 of 14 Revised 28Jul2004
Integrated Circuit Systems, Inc. ● Networking & Communications ● www.icst.com ● tel (508) 852-5400
Integrated
Circuit
Systems, Inc.
While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (ICS)
assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would
result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial
applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary
environmental requirements are not recommended without additional processing by ICS. ICS reserves the right to change any
circuitry or specifications without notice. ICS does not authorize or warrant any ICS product for use in life support devices or
critical medical instruments.
M1025/26
VCSO B
ASED
C
LOCK
PLL
WITH
A
UTO
S
WITCH
Product Data Sheet
ORDERING INFORMATION
Part Numbering Scheme
Figure 9: Part Numbering Scheme
Standard VCSO Output Frequencies (MHz)
*
Consult ICS for the availability of other VCSO frequencies.
Part Number: M102x- 1z - xxx.xxxx
VCSO Frequency (MHz)
“ - ” = 0
to +
70
o
C
(commercial)
See Table 12, right. Consult ICS for other frequencies.
I
= - 40
to +
85
o
C
(industrial)
Temperature
Frequency Input Divider Option
Output type
1 = LVPECL
Hitless Switching / Phase Build-out Options
1 = none
(For CML or LVDS clock output, consult factory)
3 = Hitless Switching with Phase Build-out
5 = Fin can equal Fvcso divided by: 8, 2, or 1
6 = Fin can equal Fvcso divided by: 4, 2, or 1
4 = Phase Build-out (without Hitless Switching)
2 = Hitless Switching
125.0000 167.3280
155.5200 167.3316
156.2500 167.7097
156.8324 168.0400
161.1328 172.6423
166.6286 173.3708
167.2820
Table 12: Standard VCSO Output Frequencies (MHz)
Note *: Fout can equal Fvcso divided by: 1 or 2
Example Part Numbers
VCSO Frequency (MHz)
Temperature Order Part Number (Examples)
155.52
commercial M1025 -11 - 155.5200 or M1026- 11 - 155.5200
industrial
M1025 -11
I
155.5200 or M1026- 11
I
155.5200
156.25
commercial M1025 -11 - 156.2500 or M1026 -11 - 156.2500
industrial
M1025 -11
I
156.2500 or M1026- 11
I
156.2500
Table 13: Example Part Numbers
