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Integrated Circuit Systems, Inc.
Preliminary Information
M660-02
DUAL SAW, SELECTABLE FREQUENCY VCSO
PIN ASSIGNMENT (9 x 14mm SMT)
nFOUT 5 2 F_SEL FOUT 4 3 GND VCC 6 1 VIN
GENERAL DESCRIPTION
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).
M660-02 M660
(Top View)
Figure 1: Pin Assignment
FEATURES
Two integrated SAW devices Selectable output frequency Supports multi-rate optical interface requirements VCSO center frequencies from 500 to 700 MHz (Specify center frequency at time of order) Low phase jitter 0.19ps rms typical (50kHz-80MHz) Low phase noise -70dBc/Hz @ 1kHz offset Differential 3.3V LVPECL output Single 3.3V power supply Small 9 x 14mm SMT (surface mount) package
Sample of Available Output Frequencies
VCSO Center Frequency1 (MHz) 622.0800 625.0000 644.5313 669.3265 Applications SONET/SDH Gigabit Ethernet Gigabit Ethernet FEC SONET/SDH FEC
Table 1: Sample of Available Output Frequencies
Note 1: Specify VCSO center frequency at time of order
BLOCK DIAGRAM
M660-02 M660
SAW Delay Line
VCSO
Phase Shifter
VIN
SAW Delay Line
FOUT nFOUT
VCSO
Phase Shifter
F_SEL
Figure 2: Block Diagram
M660-02 Datasheet Rev 3.0
M660-02 Dual SAW, Selectable Frequency VCSO
Revised 10Apr2003
Integrated Circuit Systems, Inc.
Communications Modules
w w w. i c s t . c o m
tel (508) 852-5400
Integrated Circuit Systems, Inc.
M660-02
DUAL SAW, SELECTABLE FREQUENCY VCSO
Preliminary Information
PIN DESCRIPTIONS
Number 1 2 3 4 5 6 Name VIN F_SEL GND FOUT nFOUT VCC I/O Configuration Description
Input Input Ground Output Power No internal terminator Internal pull-down resistor1
Tuning control voltage. Frequency select: Logic 1 selects Frequency 2. Logic 0 selects Frequency 1. Power supply ground connections. 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 VO VCC TS
Inputs Outputs Power Supply Voltage Storage Temperature
-0.5 to VCC +0.5 -0.5 to VCC +0.5
3.63
V V V
oC
-55 to +125
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 Min 2.97 Typ 3.3 25 Max 3.63 Unit
VCC TA
Positive Supply Voltage Ambient Operating Temperature
V
oC
-40
+85
Table 4: Recommended Conditions of Operation
M660-02 Datasheet Rev 3.0 Integrated Circuit Systems, Inc.
2 of 4 Communications Modules
Revised 10Apr2003 w w w. i c s t . c o m
tel (508) 852-5400
Integrated Circuit Systems, Inc.
M660-02
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 180 to ground
Symbol Parameter
Pin VCC
Min 2.97
Typ 3.3 90
Max 3.63 125 Vcc
Unit
Power Supply VCC ICC Control Voltage VIN
Positive Supply Voltage Power Supply Current Input Control Voltage Range VIN Input Impedence VIN Modulation Bandwidth
V mA V k kHz
0 VIN 100 1000 2
Frequency Select1
VIH VIL IIH IIL
Input High Voltage Input Low Voltage Input High Current Input Low Current
F_SEL
Vcc + 0.3 0.8
V V A A
-0.3
5 -150
51 Vcc - 0.98 Vcc - 0.75 Vcc - 1.63 0.625 0.85 20
Rpulldown Internal Pull-down Resistor Differential Outputs VOH VOL VP-P IOUT Output High Voltage Output Low Voltage Peak to Peak Output Voltage Output Current
FOUT, nFOUT Vcc - 1.95 0.475
k V V VP-P 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 180 to ground
Symbol Parameter
Min 500
1
Typ
Max 700
Unit
Notes
Frequency
FOUT APR fSTAB LIN KVCO
Output Center Frequency Range Absolute Pull-Range Frequency Stability Tuning Linearity VCO Gain Non-harmonic Spurious @622.08MHz
MHz ppm ppm p-p % ppm/V dBc dBc/Hz dBc/Hz dBc/Hz dBc/Hz ps rms ps rms % ps ps
20% to 80% 20% to 80%
Table 6: AC Characteristics
50
110 6 230 -50 100Hz Offset 1kHz Offset 10kHz Offset 100kHz Offset 12kHz to 20MHz 50kHz to 80MHz 45 -77 -41 -68 -97 -122 0.37 0.19 55 275 275 400 400
VIN = 0.3 to 3.0V Best fit straight line
Outputs n
SSB (single sideband) Phase Noise, offset from carrier Jitter (rms) Output Duty Cycle 2 Output Rise Time 2 Output Fall Time 2
J(t) odc tR tF
for FOUT, nFOUT for FOUT, nFOUT
Note 1: Consult ICS for availability of other APRs. Note 2: See Parameter Measurement Information on pg. 4.
M660-02 Datasheet Rev 3.0 Integrated Circuit Systems, Inc.
3 of 4 Communications Modules
Revised 10Apr2003 w w w. i c s t . c o m
tel (508) 852-5400
Integrated Circuit Systems, Inc.
M660-02
DUAL SAW, SELECTABLE FREQUENCY VCSO
Preliminary Information
PARAMETER MEASUREMENT INFORMATION
Output Rise and Fall Time
80% Clock Outputs 20% tR 80% VSWING 20% tF
Output Duty Cycle
nFOUT
FOUT tPW (Output Pulse Width) tPERIOD odc = tPW tPERIOD
Figure 3: Output Rise and Fall Time
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) Order Part Number
Standard Output Frequencies AA 622.0800 AG AB AC AD AE AF 625.0000 627.3296 644.5313 666.5143 669.1281 AH AI AJ AK AL
669.3120 669.3265 670.8386 672.1600 690.5692 693.4830
Frequency 1, Frequency 2
e.g., 622.0800, 669.3265
M660-02-Ax-Ax M660-02-AA-AH
Table 7: Ordering Information
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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