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Integrated Circuit Systems, Inc.
Product Data Sheet
M670
nFOUT
VOLTAGE CONTROLLED SAW OSCILLATOR
PIN ASSIGNMENT (5 x 7mm SMT)
FOUT GND VCC
GENERAL DESCRIPTION
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). 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).
6
M670
(Top View)
1
2
CLK_EN
5
FEATURES
VCSO center frequencies from 155 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 Very small 5 x 7mm SMT (surface mount) package
Figure 1: Pin Assignment
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
M670
SAW Delay Line
VIN
FOUT
Phase Shifter
nFOUT
VIN CLK_EN
Figure 2: Block Diagram
M670 Datasheet Rev 12.1
M670 Voltage Controlled SAW Oscillator
3
4
Revised 09Apr2003
Integrated Circuit Systems, Inc.
Communications Modules
w w w. i c s t . c o m
tel (508) 852-5400
Integrated Circuit Systems, Inc.
M670
VOLTAGE CONTROLLED SAW OSCILLATOR
Product Data Sheet
PIN DESCRIPTIONS
Number 1 2 3 4 5 6 Name VIN CLK_EN GND FOUT nFOUT VCC I/O Configuration Description
Input Input Ground Output Power No internal terminator
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. Clock output pair. Differential LVPECL. Power supply connection, connect to +3.3V.
Table 2: Pin Descriptions
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
M670 Datasheet Rev 12.1 Integrated Circuit Systems, Inc.
2 of 6 Communications Modules
Revised 09Apr2003 w w w. i c s t . c o m
tel (508) 852-5400
Integrated Circuit Systems, Inc.
M670
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 180 to ground
Symbol Parameter
Pin VCC
Min 2.97
Typ 3.3 80
Max 3.63 100 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 100 500 2
Clock Enable Pull-up
VIH VIL IIH IIL Rpullup
Input High Voltage Input Low Voltage Input High Current Input Low Current Internal Pull-up Resistor Output High Voltage Output Low Voltage Peak to Peak Output Voltage Output Current
FOUT, nFOUT CLK_EN
Vcc + 0.3 0.8
V V A A
-0.3
5 -150
51 Vcc - 0.98 Vcc - 1.95 0.4 0.6 Vcc - 0.75 Vcc - 1.63 0.85 20
k V V VP-P mA
Differential Outputs
VOH VOL VP-P IOUT
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 180 to ground
Symbol Parameter
Min 155
Typ
Max 700
Unit
Notes
Frequency
FOUT APR fSTAB LIN KVCO
Output Center Frequency Range Absolute Pull-Range 1 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 6 265 -50 100Hz Offset 1kHz Offset 10kHz Offset 100kHz Offset -70 -43 -70 -98 -124 0.36 0.19 45 300 300 55 400 400
VIN = 0.3 to 3.0V Best fit straight line
Outputs n
SSB Phase Noise offset from carrier
J(t) odc tR tF
Jitter (rms) Output Duty Cycle
2 2
12kHz to 20MHz 50kHz to 80MHz
Output Rise Time 2 for FOUT, nFOUT Output Fall Time for FOUT, nFOUT
Note 1: Consult ICS for availability of other APRs. Note 2: See Parameter Measurement Information on pg. 4.
M670 Datasheet Rev 12.1 Integrated Circuit Systems, Inc.
3 of 6 Communications Modules
Revised 09Apr2003 w w w. i c s t . c o m
tel (508) 852-5400
Integrated Circuit Systems, Inc.
M670
VOLTAGE CONTROLLED SAW OSCILLATOR
Product Data Sheet
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
TEST DATA
Broadband Jitter Output Waveform
Figure 5: Broadband Jitter
Figure 7: Output Waveform
Linearity
Phase Noise
Figure 8: Phase Noise
Figure 6: Linearity
M670 Datasheet Rev 12.1 Integrated Circuit Systems, Inc.
4 of 6 Communications Modules
Revised 09Apr2003 w w w. i c s t . c o m
tel (508) 852-5400
Integrated Circuit Systems, Inc.
M670
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 Order Part Number
Standard Output Frequencies 155.5200 622.0800 156.2500 156.8324 161.1328 166.6286 167.2820 167.3280 167.3316 167.7097 168.0400 172.6423 173.3708 625.0000 627.3296 644.5313 666.5143 669.1281 669.3120 669.3265 670.8386 672.1600 690.5692 693.4830
M670-xxx.xxxx M670-622.0800
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.
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
Integrated Circuit Systems, Inc.
M670
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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