ICST M670-670.8386 Voltage controlled saw oscillator Datasheet

Product Data Sheet
Integrated
Circuit
Systems, Inc.
M670
VOLTAGE CONTROLLED SAW OSCILLATOR
FOUT
4
5
6
VCC
The M670 is a VCSO (Voltage Controlled SAW
Oscillator) frequency source for low-jitter
clock generation. Its integrated SAW
(surface acoustic wave) delay line provides
low phase jitter. The M670 is available in a
range of center frequencies. Minimum
pull-range is ±50 ppm (wider pull-range available).
nFOUT
PIN ASSIGNMENT (5 x 7mm SMT)
M670
FEATURES
2
3
CLK_EN
GND
The M670 is well suited for phase-locked loop
implementations, clock and data recovery circuits, and
other timing applications for the telecom and optical
fiber networking markets (e.g., OC-48, OC-192).
1
(Top View)
VIN
GENERAL DESCRIPTION
Figure 1: Pin Assignment
◆ VCSO center frequencies from 155 to 700 MHz
(Specify center frequency at time of order)
Sample of Available Output Frequencies
◆ Low phase jitter 0.19ps rms typical (50kHz-80MHz)
VCSO Center Frequency1 (MHz)
Applications
622.0800
SONET/SDH
625.0000
Gigabit Ethernet
644.5313
Gigabit Ethernet FEC
669.3265
SONET/SDH FEC
◆ Low phase noise -70dBc/Hz @ 1kHz offset
◆ Differential 3.3V LVPECL output
◆ Single 3.3V power supply
◆ Very small 5 x 7mm SMT (surface mount) package
Table 1: Sample of Available Output Frequencies
Note 1: Specify VCSO center frequency at time of order
BLOCK DIAGRAM
M670
SAW Delay Line
FOUT
Phase
Shifter
nFOUT
VIN
CLK_EN
Figure 2: Block Diagram
M670 Datasheet Rev 12.1
Revised 09Apr2003
M670 Voltage Controlled SAW Oscillator
Integrated Circuit Systems, Inc.
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M670
Integrated
Circuit
Systems, Inc.
VOLTAGE CONTROLLED SAW OSCILLATOR
Product Data Sheet
PIN DESCRIPTIONS
Number
1
Name
VIN
I/O
2
CLK_EN
Input
3
GND
Ground
4
5
6
FOUT
nFOUT
VCC
Configuration
Input
Description
Tuning control voltage.
Clock enable:
Logic 1 enables normal operation.
Logic 0 stops the output clock;
nFOUT is held high, FOUT is held low.
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
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
M670 Datasheet Rev 12.1
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M670
Integrated
Circuit
Systems, Inc.
VOLTAGE CONTROLLED SAW OSCILLATOR
Product Data Sheet
ELECTRICAL SPECIFICATIONS
DC Characteristics
Unless stated otherwise, VCC = 3.3 Volts + 10%, TA = 0 to 85 oC, VCSO Frequency =622-695MHz, 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
80
100
mA
Vcc
V
0
VIN
VIN Input Impedence
VIN Modulation Bandwidth
Clock Enable
Pull-up
Differential
Outputs
100
kΩ
500
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
Rpullup
Internal Pull-up Resistor
VOH
Output High Voltage
VOL
Output Low Voltage
VP-P
Peak to Peak Output Voltage
IOUT
Output Current
CLK_EN
µA
-150
kΩ
51
Vcc - 0.98
FOUT, nFOUT
Vcc - 1.95
0.4
Vcc - 0.75
V
Vcc - 1.63
V
0.6
0.85
VP-P
20
mA
Table 5: DC Characteristics
AC Characteristics
Unless stated otherwise, VCC = 3.3 Volts + 10%, TA = 0 to 85 oC, VCSO Frequency =622-695MHz, Outputs terminated into 180Ω to ground
Symbol Parameter
Frequency
Min
FOUT
Output Center Frequency Range
155
APR
fSTAB
Absolute Pull-Range 1
±50
LIN
Tuning Linearity
KVCO
VCO Gain
Outputs
J(t)
Max
Unit
700
MHz
6
@622.08MHz
SSB Phase Noise
offset from carrier
Jitter (rms)
%
265
ppm/V
-70
dBc
100Hz Offset
-43
55
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
ps rms
ps rms
%
-50
1kHz Offset
-70
10kHz Offset
-98
100kHz Offset
-124
12kHz to 20MHz
0.36
0.19
50kHz to 80MHz
2
Notes
ppm
ppm p-p
110
Frequency Stability
Non-harmonic Spurious
Φn
Typ
VIN = 0.3 to 3.0V
Best fit straight line
odc
Output Duty Cycle
tR
Output Rise Time 2 for FOUT, nFOUT
300
400
ps
20% to 80%
tF
2
300
400
ps
20% to 80%
45
Output Fall Time 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.
M670 Datasheet Rev 12.1
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M670
Integrated
Circuit
Systems, Inc.
VOLTAGE CONTROLLED SAW OSCILLATOR
Product Data Sheet
PARAMETER MEASUREMENT INFORMATION
Output Rise and Fall Time
80%
Clock
Outputs
Output Duty Cycle
nFOUT
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
TEST DATA
Broadband Jitter
Output Waveform
Figure 5: Broadband Jitter
Linearity
Figure 7: Output Waveform
Phase Noise
Figure 8: Phase Noise
Figure 6: Linearity
M670 Datasheet Rev 12.1
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M670
Integrated
Circuit
Systems, Inc.
VOLTAGE CONTROLLED SAW OSCILLATOR
Product Data Sheet
DEVICE PACKAGE - 5 x 7mm SMT (Surface Mount) Package
Mechanical Dimensions:
Dimensions are in mm;
dimensions in [ ] are in inches
Unless otherwise specified, all
dimensions are ±0.13 [0.005]
Figure 9: Device Package - 5 x 7mm SMT (Surface Mount) Package
ORDERING INFORMATION
For Output Frequency (MHz)
xxx.xxxx
e.g., 622.0800
Standard Output Frequencies
155.5200
622.0800
Order Part Number
M670-xxx.xxxx
M670-622.0800
156.2500
625.0000
156.8324
627.3296
Table 7: Ordering Information
161.1328
644.5313
166.6286
666.5143
167.2820
669.1281
167.3280
669.3120
167.3316
669.3265
167.7097
670.8386
168.0400
672.1600
172.6423
690.5692
173.3708
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.
M670 Datasheet Rev 12.1
Integrated Circuit Systems, Inc.
5 of 6
●
Communications Modules
Revised 09Apr2003
●
w w w. i c s t . c o m
●
tel (508) 852-5400
M670
Integrated
Circuit
Systems, Inc.
VOLTAGE CONTROLLED SAW OSCILLATOR
Product Data Sheet
M670 Datasheet Rev 12.1
Integrated Circuit Systems, Inc.
6 of 6
●
Communications Modules
Revised 09Apr2003
●
w w w. i c s t . c o m
●
tel (508) 852-5400
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