ICST M660-02-AC Dual saw, selectable frequency vcso Datasheet

Preliminary Information
Integrated
Circuit
Systems, Inc.
M660-02
DUAL SAW, SELECTABLE FREQUENCY VCSO
nFOUT
FOUT
The M660-02 is a dual SAW, selectable frequency
VCSO frequency source for low-jitter clock
generation. An integrated SAW (surface
acoustic wave) delay line implements the
high-Q VCO (voltage controlled oscillator)
function, which results in low output phase
noise and very low jitter. The M660-02 is available in
a range of center frequencies from 500 to 700MHz.
Minimum pull-range is ±50 ppm (wider pull-range is
available). The M660-02 is well suited for phase-locked
loop implementations, clock and data recovery circuits,
and other timing applications in telecom and optical
fiber networking systems (e.g., OC-48, OC-192).
VCC
PIN ASSIGNMENT (9 x 14mm SMT)
6
5
4
M660-02
M660
2
3
F_SEL
GND
(Top View)
1
VIN
GENERAL DESCRIPTION
Figure 1: Pin Assignment
FEATURES
Sample of Available Output Frequencies
◆ Two integrated SAW devices
VCSO Center Frequency1 (MHz)
Applications
◆ Supports multi-rate optical interface requirements
622.0800
SONET/SDH
◆ VCSO center frequencies from 500 to 700 MHz
(Specify center frequency at time of order)
625.0000
Gigabit Ethernet
◆ Low phase jitter 0.19ps rms typical (50kHz-80MHz)
644.5313
Gigabit Ethernet FEC
◆ Low phase noise -70dBc/Hz @ 1kHz offset
669.3265
SONET/SDH FEC
◆ Selectable output frequency
◆ Differential 3.3V LVPECL output
Table 1: Sample of Available Output Frequencies
Note 1: Specify VCSO center frequency at time of order
◆ Single 3.3V power supply
◆ Small 9 x 14mm SMT (surface mount) package
BLOCK DIAGRAM
M660-02
M660
SAW Delay Line
VCSO
Phase
Shifter
FOUT
VIN
nFOUT
SAW Delay Line
VCSO
Phase
Shifter
F_SEL
Figure 2: Block Diagram
M660-02 Datasheet Rev 3.0
Revised 10Apr2003
M660-02 Dual SAW, Selectable Frequency VCSO
Integrated Circuit Systems, Inc.
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Communications Modules
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tel (508) 852-5400
M660-02
Integrated
Circuit
Systems, Inc.
DUAL SAW, SELECTABLE FREQUENCY VCSO
Preliminary Information
PIN DESCRIPTIONS
Name
VIN
I/O
F_SEL
Input
3
GND
Ground
4
5
6
FOUT
nFOUT
VCC
Number
1
2
Configuration
Description
Input
Internal pull-down resistor1
Tuning control voltage.
Frequency select:
Logic 1 selects Frequency 2.
Logic 0 selects Frequency 1.
Power supply ground connections.
Output
No internal terminator
Power
Clock output pair. Differential LVPECL.
Power supply connection, connect to +3.3V.
Table 2: Pin Descriptions
Note 1: See “Frequency Select” in Table 5, DC Characteristics on pg. 3.
ABSOLUTE MAXIMUM RATINGS1
Symbol Parameter
Rating
Unit
VI
Inputs
-0.5 to VCC +0.5
V
VO
Outputs
-0.5 to VCC +0.5
V
VCC
Power Supply Voltage
3.63
V
TS
Storage Temperature
-55 to +125
oC
Table 3: Absolute Maximum Ratings
Note 1:Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the
device. These ratings ard stress specifications only. Functional operation of product at these conditions
or any conditions beyond those listed in Recommended Conditions of Operation, DC Characteristics, or
AC Characteristics is not implied. Exposure to absolute maximum rating conditions for extended periods
may affect product reliability.
RECOMMENDED CONDITIONS OF OPERATION
Symbol Parameter
VCC
TA
Positive Supply Voltage
Min
Typ
Max
2.97
3.3
3.63
-40
Ambient Operating Temperature
25
Unit
V
oC
+85
Table 4: Recommended Conditions of Operation
M660-02 Datasheet Rev 3.0
Integrated Circuit Systems, Inc.
2 of 4
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Communications Modules
Revised 10Apr2003
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w w w. i c s t . c o m
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tel (508) 852-5400
M660-02
Integrated
Circuit
Systems, Inc.
DUAL SAW, SELECTABLE FREQUENCY VCSO
Preliminary Information
ELECTRICAL SPECIFICATIONS
DC Characteristics
Unless stated otherwise, VCC = 3.3 Volts + 10%, TA = 0 to 85 oC, VCSO Frequency =500-700MHz, Outputs terminated into 180Ω to ground
Symbol Parameter
Power Supply VCC
Control
Voltage
Pin
Positive Supply Voltage
VCC
ICC
Power Supply Current
VIN
Input Control Voltage Range
Min
Typ
Max
Unit
2.97
3.3
3.63
V
90
125
mA
Vcc
V
0
VIN
VIN Input Impedence
VIN Modulation Bandwidth
Frequency
Select1
kΩ
1000
kHz
VIH
Input High Voltage
2
Vcc + 0.3
V
VIL
Input Low Voltage
-0.3
0.8
V
IIH
Input High Current
5
µA
IIL
Input Low Current
F_SEL
µA
-150
Rpulldown Internal Pull-down Resistor
Differential
Outputs
100
kΩ
51
VOH
Output High Voltage
Vcc - 0.98
VOL
Output Low Voltage
VP-P
Peak to Peak Output Voltage
IOUT
Output Current
FOUT, nFOUT
Vcc - 1.95
0.475
Vcc - 0.75
V
Vcc - 1.63
V
0.625
0.85
VP-P
20
mA
Table 5: DC Characteristics
Note 1: Internally pulled down to Logic 0 (Frequency 1) if left unselected.
AC Characteristics
Unless stated otherwise, VCC = 3.3 Volts + 10%, TA = 0 to 85 oC, VCSO Frequency =500-700MHz, Outputs terminated into 180Ω to ground
Symbol Parameter
Frequency
FOUT
Min
Output Center Frequency Range
APR
fSTAB
Absolute Pull-Range
Frequency Stability
LIN
Tuning Linearity
KVCO
VCO Gain
Outputs
1
J(t)
Max
Unit
700
MHz
±50
%
6
@622.08MHz
SSB (single sideband)
Phase Noise, offset
from carrier
Jitter (rms)
odc
Output Duty Cycle 2
tR
Output Rise Time 2
tF
Output Fall Time 2
230
ppm/V
-77
dBc
-41
1kHz Offset
-68
55
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
ps rms
ps rms
%
275
400
ps
20% to 80%
275
400
ps
20% to 80%
-50
10kHz Offset
-97
100kHz Offset
-122
12kHz to 20MHz
0.37
50kHz to 80MHz
0.19
for FOUT, nFOUT
for FOUT, nFOUT
Table 6: AC Characteristics
Note 1: Consult ICS for availability of other APRs.
Note 2: See Parameter Measurement Information on pg. 4.
Integrated Circuit Systems, Inc.
3 of 4
●
VIN = 0.3 to 3.0V
Best fit straight line
100Hz Offset
45
M660-02 Datasheet Rev 3.0
Notes
ppm
ppm p-p
110
Non-harmonic Spurious
Φn
Typ
500
Communications Modules
Revised 10Apr2003
●
w w w. i c s t . c o m
●
tel (508) 852-5400
M660-02
Integrated
Circuit
Systems, Inc.
DUAL SAW, SELECTABLE FREQUENCY VCSO
Preliminary Information
PARAMETER MEASUREMENT INFORMATION
Output Rise and Fall Time
Output Duty Cycle
Clock
Outputs
nFOUT
80%
80%
VSWING
20%
tF
20%
tR
FOUT
tPW
(Output Pulse Width)
tPERIOD
Figure 3: Output Rise and Fall Time
odc =
tPW
tPERIOD
Figure 4: Output Duty Cycle
DEVICE PACKAGE - 9 x 14mm SMT (Surface Mount) Package
Mechanical Dimensions:
Dimensions are in inches;
dimensions in [ ] are in mm
Unless otherwise specified, all
dimensions are ±0.005 [0.13]
Figure 5: Device Package - 9 x 14mm SMT (Surface Mount) Package
ORDERING INFORMATION
For Output Frequencies (MHz)
Frequency 1, Frequency 2
e.g., 622.0800, 669.3265
Order Part Number
Standard Output Frequencies
AA
622.0800
AG
669.3120
AB
625.0000
AH
669.3265
M660-02-Ax-Ax
M660-02-AA-AH
AC
627.3296
AI
670.8386
AD
644.5313
AJ
672.1600
Table 7: Ordering Information
AE
666.5143
AK
690.5692
AF
669.1281
AL
693.4830
Table 8: Standard Output Frequencies
Consult ICS for the availability of other VCSO frequencies.
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.
M660-02 Datasheet Rev 3.0
Integrated Circuit Systems, Inc.
4 of 4
●
Communications Modules
Revised 10Apr2003
●
w w w. i c s t . c o m
●
tel (508) 852-5400
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