ICS ICS9120M-56

ICS9120-56
Integrated
Circuit
Systems, Inc.
Frequency Timing Generator for EtherNet & Hard Drives
General Description
The ICS9120-56 is a high performance frequency generator
designed to support hard disk drive and EtherNet systems. It
offers all clock frequencies required for the servo and decoder
sections of these devices. These frequencies are synthesized
from a single 25.00 MHz on-chip oscillator.
Features
•
•
•
•
•
•
Single 25.00 MHz crystal or system clock reference
100ps one sigma jitter maintains 16-bit performance
Output rise/fall times less than 2.0ns
On-chip loop filter components
3.3V-5V supply range
8-pin, 150-mil SOIC
High accuracy, low jitter PLLs meet the 100 ppm frequency
tolerance required by these systems. Fast output clock
edge rates minimize board induced jitter.
Applications
•
Specifically designed to support the high performance
requirements of high speed EtherNet systems using
10Base-T/100Base-TX Integrataed PHYceiver.
•
Designed to support the requirements for high
performance hard drives.
Pin Configuration
8-Pin SOIC
Block Diagram
9120-56 Rev A 040697P
ICS9120-56
Pin Descriptions for ICS9120-56
PIN
NUMBER
PIN
NAME
1
X1
2
3
4
5
6
7
8
VDD
GND
CLK1
CLK2
CLK3
REF
X2
TYPE
Input
Power
Power
Output
Output
Output
Output
Output
DESCRIPTION
Crystal or external clock source. Has feedback bias for crystal, and internal
crystal load capacitors to GND.
+Power supply input.
Ground return for Pin 2.
40.00 M Hz clock output.
22.5 MHz output clock.
20.00 M Hz output clock.
Reference clock
Crystal output drive, includes internal crystal load capacitor to GND.
2
ICS9120-56
Absolute Maximum Ratings
Supply Voltage .......................................................................................................... 7.0 V
Logic Inputs ....................................................................... GND –0.5 V to VDD +0.5 V
Ambient Operating Temperature ............................................................. 0°C to +70°C
Storage Temperature ........................................................................... –65°C to +150°C
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings
are stress specifications only and functional operation of the device at these or any other conditions above those listed
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 3.3 V
VDD = +3.0 to +3.7 V, TA = 0OC-70 oC unless otherwise stated
DC Characteristics
PARAMETER
SYMBOL
Input Low Voltage1, X12
Input High Voltage1, X12
Output Low Voltage
Output High Voltage
VIL
VIH
VOL
VOH
Output Low Current
Output High Current
IOL
IOH
Supply Current
IDD
Rise Time1
Fall Time1
Tr
Tf
Duty Cycle1
Dt
Duty Cycle1
Dt
Jitter, One Sigma1
Tjis
Jitter Absolute1
Tjab
TEST CONDITIONS
MIN
TYP
MAX
UNITS
0.8
-8.0
30.0
V
V
V
V
mA
mA
mA
0.8
2.3
1.5
ns
ns
45
50
55
%
55
6
65
%
120
200
ps
310
500
ps
0.9
3
%
1.9
4
30
48
%
MHz
MHz
0
100
ppm
7
10
ms
2.0
IOL=6.0mA
IOH=4.0mA
VOL=0.2VDD
VOH=0.7VDD
Unloaded VDD 5.5V
0.85VDD
15.0
0.05VDD
0.94VDD
24
-13
16
0.1VDD
AC Characteristics
Jitter, One Sigma
1
Tjis
1
Jitter Absolute
Input Frequency1
Output Frequency Range1
Output Mean Frequency1
Accuracy vs. Target
Power-up Time1,3
Crystal Input Capacitance
1
15pF load 0.8 to 2.0V
15pF load 2.0 to 0.8V
15pF load @ 1.5V V DD
Except REFCLK
15pF load @ 1.5V V DD
Except REFCLK
For all frequencies except
REFCLK
For all frequencies except
REFCLK
REFCLK only
Tjab
FI
Fo
REFCLK only
Foa
With 25.00MHz input
Tpu
0 to 40.0 MHz/1ms Ramp.
X1 (Pin 1),
X2 (Pin 8)
Cinx
-500
1
1.6
-100
16
1: Parameter is guaranteed by design and characterization. Not 100% tested in production.
2: For direct drive of X1 input.
3. 1ms Ramp @ 1.4V to 1 st crossing.
3
pF
ICS9120-56
Electrical Characteristics at 5.0 V
VDD = +4.5 to 5.5 V, TA = 0OC-70oC unless otherwise stated
DC Characteristics
PARAMETER
1
SYMBOL
2
Input Low Voltage , X1
Input High Voltage1, X12
Output Low Voltage
Output High Voltage
Output Low Current
Output High Current
Supply Current
VIL
VIH
VOL
VOH
IOL
IOH
IDD
TEST CONDITIONS
MIN
TYP
MAX
UNITS
0.8
V
V
V
V
mA
mA
mA
2.0
IOL=10mA
IOH=-30mA
VOL=0.8
VOH=2.4
Unloaded VDD 5.5V
0.15
3.7
45
-53
25
-35
50
0.7
0.5
2.0
1.4
1.5
1.5
4.0
4.0
ns
ns
45
51
55
%
55
62
65
%
50
100
ps
200
400
ps
1.2
2.2
4
5
50
80
%
%
MHz
MHz
0
100
ppm
6
10
ms
2.4
25
0.4
AC Characteristics
Rise Time1
Fall Time1
Rise Time1
Fall Time1
Tr
Tf
Tr
Tf
Duty Cycle1
Dt
Duty Cycle1
Dt
Jitter, One Sigma1
Tjis
Jitter Absolute1
Tjab
Jitter, One Sigma
1
1
Jitter Absolute
Input Frequency1
Output Frequency Range1
Output Mean Frequency1
Accuracy vs. Target
Tjis
Tjab
FI
Fo
Foa
Power-up Time1,3
Tpu
Crystal Input Capacitance1
Cinx
15pF load 0.8 to 2.0V
15pF load 2.0 to 0.8V
15pF load 20% to 80%
15pF load 80% to 20%
15pF load @ 1.4V
REFCLK
15pF load @ 1.4V
REFCLK
For all frequencies except
REFCLK
For all frequencies except
REFCLK
REFCLK only
REFCLK only
-400
1
1.6
With 25.00MHz input
0 to 40.0 MHz;
1ms Ramp.
X1 (Pin 1),
X2 (Pin 8)
-100
16
1: Parameter is guaranteed by design and characterization. Not 100% tested in production.
2: For direct drive of X1 input.
3. 1ms Ramp @ 1.4V to 1st crossing.
4
pF
ICS9120-56
0.154
0.031
0.194
0.063
0.015
0.024
0.008
0.025
0.016
0.050 0.006
± 0.004
0.238
8-Pin SOIC Package
Ordering Information
ICS9120M-56
Example:
ICS XXXX M-PPP
Pattern Number (2 or 3-digit number for parts with ROM code pattern)
Package Type
M =SOIC
Device Type (consists of 3 or 4-digit numbers)
Prefix
ICS, AV=Standard Device
5