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Integrated Circuit Systems, Inc.
Preliminary Information
M675
VOLTAGE CONTROLLED SAW OSCILLATOR
PIN ASSIGNMENT (5 x 7.5mm SMT)
nFOUT FOUT GND VCC
GENERAL DESCRIPTION
The M675 is a VCSO (Voltage Controlled SAW Oscillator) 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 M675-01 is available in a range of center frequencies from 125 to 175 MHz. The M675-02 provides 500 to 700 MHz. Guaranteed minimum pull-range of 100 ppm meets GbE requirements. (It also fully satisfies 50 ppm minimum pull-range specification commonly required.) Industry-standard Kvco (VCO Gain) provides full replacement compatibility. The M675 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., SONET/SDH).
6
5
M675 M675
(Top View)
1
2
VIN
Figure 1: Pin Assignment
Sample of Available Output Frequencies
VCSO Center Frequencies1 (MHz) M675-01 M675-02 155.5200 156.2500 161.1328 167.3316 622.0800 625.0000 644.5313 669.3266 Applications SONET/SDH Gigabit Ethernet Gigabit Ethernet FEC SONET/SDH FEC
FEATURES
Integrated SAW device M675-01 output frequencies from 125 to 175 MHz M675-02 output frequencies from 500 to 700 MHz (Specify center frequency at time of order) Industry-standard Kvco for full compatibility Low phase jitter 0.2ps rms typical for the M675-02 (50kHz to 80MHz) Differential 3.3V LVPECL output Single 3.3V power supply Small 5 x 7.5mm SMT (surface mount) package
Table 1: Sample of Available Output Frequencies
Note 1: Specify VCSO center frequencies at time of order
BLOCK DIAGRAM
M675 M670
SAW Delay Line
FOUT
Phase Shifter
nFOUT
VIN CLK_EN
Figure 2: Block Diagram
M675 Datasheet Rev 0.4
M675 Voltage Controlled SAW Oscillator
CLK_EN
Revised 16Nov2004
Integrated Circuit Systems, Inc.
Networking & Communications
w w w. i c s t . c o m
tel (508) 852-5400
3
4
Integrated Circuit Systems, Inc.
M675
VOLTAGE CONTROLLED SAW OSCILLATOR
Preliminary Information
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 Internal pull-up resistor1
Frequency control input. Clock enable: Logic 1 enables normal operation. Logic 0 stops the output clock; nFOUT is held high, FOUT is held low. Power supply ground connection. Clock output pair. Differential LVPECL. Power supply connection, connect to +3.3V.
Table 2: Pin Descriptions
Note 1: See "Clock Enable Pull-up" in Table 5 (DC Characteristics for M675-01 on pg. 3) and Table 7 (DC Characteristics for M675-02 on pg. 4).
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
4.6
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 are 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
M675 Datasheet Rev 0.4 Integrated Circuit Systems, Inc.
2 of 6 Networking & Communications
Revised 16Nov2004 w w w. i c s t . c o m
tel (508) 852-5400
Integrated Circuit Systems, Inc.
M675
VOLTAGE CONTROLLED SAW OSCILLATOR
Preliminary Information
ELECTRICAL SPECIFICATIONS FOR M675-01
DC Characteristics for M675-01
Unless stated otherwise, VCC = 3.3 Volts + 10%, TA = 0 to 85 oC, VCSO Freq.s = 155.52 MHz, Outputs terminated into 180 to ground
Symbol Parameter
Pin VCC
Min 2.97
Typ 3.3 85
Max 3.63 125 3.3
Unit
Power Supply VCC ICC Control Voltage VIN
Positive Supply Voltage Power Supply Current Input Control Voltage Range VIN Input Impedence 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 Voltage2 Output Current
V mA V k V V A A
VIN
0 100 2
Clock Enable VIH Pull-up1 VIL IIH IIL Rpullup Differential Outputs VOH VOL VP-P IOUT
Vcc + 0.3 0.8
-0.3
CLK_EN
5 -150
51 Vcc - 0.98
k
Vcc - 0.75 V Vcc - 1.63 V
FOUT, nFOUT
Vcc - 1.95 0.450 0.625
0.85 20
VP-P mA
Note 1: Internally pulled up to Logic 1 (normal operation) if left unselected. Note 2: Single-ended measurement. See Figure 3, Output Rise and Fall Time, on pg. 5.
Table 5: DC Characteristics for M675-01
AC Characteristics for M675-01
Unless stated otherwise, VCC = 3.3 Volts + 10%, TA = 0 to 85 oC, VCSO Freq. = 155.52 MHz, Outputs terminated into 180 to ground
Symbol Parameter
Min VIN 125
1
Typ 500
Max
Unit
Notes
Control Voltage VIN Output FOUT APR fSTAB LIN KVCO n
Modulation Bandwidth
kHz
175
Output Center Frequency Range M675-01 Absolute (Guaranteed) Pull-Range Frequency Stability Tuning Linearity VCO Gain Non-harmonic Spurious SSB (single sideband) Phase Noise, offset from carrier
100Hz Offset 1kHz Offset 10kHz Offset 100kHz Offset 1MHz Offset
MHz ppm ppm p-p At any givin VIN %
VIN = 0.3 to 3.0V Best fit straight line
100
100 6 400 -50 -77 -52 -80 -112 -136 -146 0.36 0.50 45 275 275 55 425 425
ppm/V VIN = 0.3 to 3.0V dBc dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz ps rms ps rms % ps ps
20% to 80% 20% to 80%
J(t) odc tR tF
Jitter (rms) Output Duty Cycle 2
12kHz to 20MHz 50kHz to 80MHz
Output Rise Time for FOUT, nFOUT Output Fall Time 2 for FOUT, nFOUT
2
Note 1: Also fully meets 50 ppm minimum pull-range specification that is commonly required. Note 2: See Parameter Measurement Information on pg. 5.
Table 6: AC Characteristics for M675-01
M675 Datasheet Rev 0.4 Integrated Circuit Systems, Inc.
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Revised 16Nov2004 w w w. i c s t . c o m
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Integrated Circuit Systems, Inc.
M675
VOLTAGE CONTROLLED SAW OSCILLATOR
Preliminary Information
ELECTRICAL SPECIFICATIONS FOR M675-02
DC Characteristics for M675-02
Unless stated otherwise, VCC = 3.3 Volts + 10%, TA = 0 to 85 oC, VCSO Freq. = 622.08 MHz, Outputs terminated into 180 to ground
Symbol Parameter
Pin VCC
Min 2.97
Typ 3.3 85
Max 3.63 125 3.3
Unit
Power Supply VCC ICC Control Voltage VIN
Positive Supply Voltage Power Supply Current Input Control Voltage Range VIN Input Impedence 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 Voltage2 Output Current
V mA V k V V A A
VIN
0 100 2
Clock Enable VIH Pull-up1 VIL IIH IIL Rpullup Differential Outputs VOH VOL VP-P IOUT
Vcc + 0.3 0.8
-0.3
CLK_EN
5 -150
51 Vcc - 0.98
k
Vcc - 0.75 V Vcc - 1.63 V
FOUT, nFOUT
Vcc - 1.95 0.450 0.625
0.85 20
VP-P mA
Note 1: Internally pulled up to Logic 1 (normal operation) if left unselected. Note 2: Single-ended measurement. See Figure 3, Output Rise and Fall Time, on pg. 5.
Table 7: DC Characteristics for M675-02
AC Characteristics for M675-02
Unless stated otherwise, VCC = 3.3 Volts + 10%, TA = 0 to 85 oC, VCSO Freq. = 622.08 MHz, Outputs terminated into 180 to ground
Symbol Parameter
Min VIN 500
1
Typ 500
Max
Unit
Notes
Control Voltage VIN Output FOUT APR fSTAB LIN KVCO n
Modulation Bandwidth
kHz
700
Output Center Frequency Range M675-02 Absolute (Guaranteed) Pull-Range Frequency Stability Tuning Linearity VCO Gain Non-harmonic Spurious SSB (single sideband) Phase Noise, offset from carrier
100Hz Offset 1kHz Offset 10kHz Offset 100kHz Offset 1MHz Offset
MHz ppm ppm p-p At any givin VIN %
VIN = 0.3 to 3.0V Best fit straight line
100
100 6 400 -50 -77 -48 -75 -99 -124 -142 0.30 0.18 45 275 275 55 400 400
ppm/V VIN = 0.3 to 3.0V dBc dBc/Hz dBc/Hz dBc/Hz dBc/Hz dBc/Hz ps rms ps rms % ps ps
20% to 80% 20% to 80%
J(t) odc tR tF
Jitter (rms) Output Duty Cycle 2
12kHz to 20MHz 50kHz to 80MHz
Output Rise Time for FOUT, nFOUT Output Fall Time 2 for FOUT, nFOUT
2
Note 1: Also fully meets 50 ppm minimum pull-range specification that is commonly required. Note 2: See Parameter Measurement Information on pg. 5.
Table 8: AC Characteristics for M675-02
M675 Datasheet Rev 0.4 Integrated Circuit Systems, Inc.
4 of 6 Networking & Communications
Revised 16Nov2004 w w w. i c s t . c o m
tel (508) 852-5400
Integrated Circuit Systems, Inc.
M675
VOLTAGE CONTROLLED SAW OSCILLATOR
Preliminary Information
PARAMETER MEASUREMENT INFORMATION
Output Rise and Fall Time
80% Clock Outputs 20% tR 80% VP-P 20% tF FOUT tPW (Output Pulse Width) tPERIOD odc = tPW tPERIOD
Output Duty Cycle
nFOUT
Figure 3: Output Rise and Fall Time
Figure 4: Output Duty Cycle
DEVICE PACKAGE - 5 x 7.5mm SMT (Surface Mount) Package
Mechanical Dimensions:
-02-AA
Dimensions are in mm; dimensions in [ ] are in inches Unless otherwise specified, all dimensions are 0.13 [0.005]
Figure 5: Device Package - 5 x 7.5mm SMT (Surface Mount) Package
M675 Datasheet Rev 0.4 Integrated Circuit Systems, Inc.
5 of 6 Networking & Communications
Revised 16Nov2004 w w w. i c s t . c o m
tel (508) 852-5400
Integrated Circuit Systems, Inc.
Preliminary Information
M675
VOLTAGE CONTROLLED SAW OSCILLATOR
ORDERING INFORMATION
Part Numbering Scheme Part Number:
Device Number Variant -01 = Output Frequencies 125 - 175 MHz -02 = Output Frequencies 500 - 700 MHz Output Frequency Order Code See Tables 10 and 11 at right for frequency order codes. Consult ICS for other frequencies and order codes.
M675-01 Standard Output Frequencies & Order Codes
M680-01 M675 -0y - xx
153.6000 155.5200 156.2500 156.8324 161.1328 164.3555 166.6286
BO BA BB BC BD BM BE
167.2820 167.3280 167.3316 167.7097 168.0400 172.6423 173.3708
BF BG BH BI BJ BK BL
Figure 6: Part Numbering Scheme
Example Order Numbers For Output Order Part # Frequencies M675-01-Bx 155.5200 156.2500 161.1328 167.3316 M675-01-BA M675-01-BB M675-01-BD M675-01-BH
Table 10: M675-01 Standard Output Frequencies & Order Codes
For Output Order Part # Frequencies M675-02-Ax 622.0800 625.0000 644.5313 669.3266 M675-02-AA M675-02-AB M675-02-AD M675-02-AH
M675-02 Standard Output Frequencies & Order Codes 614.4000 622.0800 625.0000 627.3296 644.5313 657.4219 666.5143
AO AA AB AC AD AM AE
669.1281 669.3120 669.3266 670.8386 672.1600 690.5692 693.4830
AF AG AH AI AJ AK AL
Table 9: Example Order Numbers
Table 11: M675-02 Standard Output Frequencies & Order Codes
Consult ICS for the availability of other 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. M675 Datasheet Rev 0.4 Integrated Circuit Systems, Inc.
6 of 6 Networking & Communications
Revised 16Nov2004 w w w. i c s t . c o m
tel (508) 852-5400

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