ICS ICS9112M-32

ICS9112-31/32
Integrated
Circuit
Systems, Inc.
Preliminary Product Preview
Frequency Generator for Fibre Channel Systems
General Description
Features
The ICS9112-31/32 are high-speed clock generators designed
to support fibre channel system requirements. The ICS911231/32 generates 106.25 MHz from a 25 MHz crystal.
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An exact frequency multiplying ratio ensures better than
±100 ppm frequency accuracy using a standard AT crystal
with external load capacitors (typically 33pF ±5% for an
18pF load crystal). Achieving ±100 ppm over four years
requires the crystal to have a ±20 ppm initial accuracy, ±30
ppm temperature and ±5 ppm/year aging coefficients.
The ICS9112-31/32 with less than 25ps accumulative jitter
is well suited for Fibre Channel applications.
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Generates 106.25 MHz clocks from a 25 MHz
crystal
Less than 45ps one sigma jitter (15ps typ.)
Less than ±130ps absolute jitter
Less than 25ps accumulative jitter @ 256 cycles
Rise/fall times less than 1.2ns driving 15pF
On-chip loop filter components
3.0V-5.5V supply range
8-pin, 150-mil SOIC package
Applications
•
Specifically designed to support the high-speed
clocking requirements of fibre channel systems.
Block Diagram
9112-31 9112-32 Rev D 3/2/99
PRODUCT PREVIEW documents contain information on new
products in the sampling or preproduction phase of development.
Characteristic data and other specifications are subject to change
without notice.
ICS9112-31/32
Preliminary Product Preview
Pin Configurations
8-Pin SOIC
8-Pin SOIC
Functionality
OE
X1, X2
(MHz)
FOUT
(MHz)
1
25.00
106.25
0
25.00
Tristate
Pin Descriptions
PIN
NUMBER
PIN NAME
TYPE
DESCRIPTION
1
AGND
PWR
Analog ground.
2
GND
PWR
Digital Ground.
3
X1
IN
4
X2
IN
Crystal drive output from device. Requires external load capacitors.
5
OE
IN
Output Enable (has internal pull_up.): when OE is low, it tristates the clock output (FOUT)
6
7
8
Crystal or clock input to device; nominally 25.00 MHz. Requires external load capacitors.
VDD
PWR
+3.3 or +5.0 volt supply (-31)
CLK2
OUT
Clock output (106.25mHz) (-32)
AVDD
PWR
Analog power. (Must equal digital power voltage).(-31)
VDD+AVDD
PWR
Digital and analog power, +3.3 or +5.0Volt supply (-32)
CLK1
OUT
Clock output (106.25MHz)
2
ICS9112-31/32
Preliminary Product Preview
Absolute Maximum Ratings
AVDD, VDD referenced to GND . . . . . . . . . . . . . . . 7V
Operating temperature under bias. . . . . . . . . . . . . . . . 0°C to +70°C
Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C
Voltage on I/O pins referenced to GND. . . . . . . . . . . GND -0.5V to VDD +0.5V
Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 Watts
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at these or any other conditions above
those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect product reliability.
Electrical Characteristics at 5.0V
Operating VDD = +4.5V to +5.5V; TA =0°C to 70°C unless otherwise stated
PARAMETER
Input Low Voltage
Input High Voltage
Input Low Current
Input High Current
Output Low Voltage1
Output High Voltage1
Output Low Current1
Output High Current1
Supply Current
Pull-up Resistor1
1
SYMBOL
VIL
VIH
IIL
IIH
VOL
VOH
IOL
IOH
IDD
Rpu
Rise Time
Fall Time1
Duty Cycle1
Jitter, One Sigma1
Jitter, Absolute1
Accumulative Jitter1
Input Frequency1
Output Frequency1
Power-up Time1
Tr1
Tf1
Dt
Tj1s
Tjab
Tjacc
Fi
Fo
Tpu
Crystal Input Capacitance1
Cinx
Note 1:
DC Characteristics
TEST CONDITIONS
VIN=0V (Pull-up input)
VIN=VDD
IOL=10mA
IOH=-30mA
VOL=0.8V
VOH=2.0V
Unloaded
AC Characteristics
15pF load, 0.8 to 2.0V
15pF load, 2.0 to 0.8V
15pF load @ 1.4V
15pF load
15pF load
15pF load @ 256 Cycle
X1 (Pin 1)
X2 (Pin 8)
MIN
2.0
-16.0
-2.0
2.4
22.0
-
TYP
-6.0
0.15
3.25
35.0
-50.0
22.0
100
MAX
0.8
2.0
0.40
-35.0
45.0
-
UNITS
V
V
µA
µA
V
V
mA
mA
mA
k ohms
42.0
-130.0
-
0.8
0.7
49.0
15.0
17.0
25.0
106.25
7.58
1.2
1.2
55. 0
45.0
130.0
18.0
ns
ns
%
ps
ps
ps
MHz
MHz
ms
-
3.0
-
pF
Parameter is guaranteed by design and characterization. Not 100% tested in production.
3
ICS9112-31/32
Preliminary Product Preview
Electrical Characteristics at 3.3V
Operating VDD = +3.0V to +3.7V; TA =0°C to 70°C unless otherwise stated
PARAMETER
Input Low Voltage
Input High Voltage
Input Low Current
Input High Current
Output Low Voltage1
Output High Voltage1
Output Low Current1
Output High Current1
Supply Current
Pull-up Resistor1
Time1
SYMBOL
VIL
VIH
IIL
IIH
VOL
VOH
IOL
IOH
IDD
Rpu
R ise
Fall Time1
Duty Cycle1
Jitter, One Sigma1
Jitter, Absolute1
Accumulative Jitter1
Input Frequency1
Output Frequency1
Power-up Time1
Tr1
Tf1
Dt
Tj1s
Tjab
Tjacc
Fi
Fo
Tpu
Crystal Input Capacitance1
Cinx
Note 1:
DC Characteristics
TEST CONDITIONS
VIN=0V (Pull-up input)
VIN=VDD
IOL=6mA
IOH=-5mA
VOL=0.2VDD
VOH=0.7VDD
Unloaded
AC Characteristics
15pF load, 0.8 to 2.0V
15pF load, 2.0 to 0.8V
15pF load @ 1.4V
15pF load
15pF load
15pF load @ 256 cycle
X1 (Pin 1)
X2 (Pin 8)
MIN
0.7VDD
-7.0
-2.0
0.85VDD
15.0
-
TYP
-2.5
0.05VDD
0.92VDD
22.0
-17.0
14.0
175.0
MAX
0.20VDD
2.0
0.1VDD
-10.0
30.0
-
UNITS
V
V
µA
µA
V
V
mA
mA
mA
k ohms
40.0
-130.0
-
0.65
0.6
50.0
15.0
17.0
25.0
106.25
7.58
1.2
1.2
60.0
45.0
130.0
18.0
ns
ns
%
ps
ps
ps
MHz
MHz
ms
-
3.0
-
pF
Parameter is guaranteed by design and characterization. Not 100% tested in production.
4
ICS9112-31/32
Preliminary Product Preview
8-Pin Plastic SOIC Package
Ordering Information
ICS9112M-31/32
Example:
ICS XXXX M-PPP
Pattern Number(2 or 3 digit number for parts with ROM code patterns)
Package Type
M=SOIC, SOP
Device Type (consists of 3 or 4 digit numbers)
Prefix
ICS=Standard Device
5
PRODUCT PREVIEW documents contain information on new
products in the sampling or preproduction phase of development.
Characteristic data and other specifications are subject to change
without notice.