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PDF M675 Data sheet ( Hoja de datos )
| Número de pieza | M675 | |
| Descripción | VOLTAGE CONTROLLED SAW OSCILLATOR | |
| Fabricantes | Integrated Circuit Systems | |
| Logotipo |  |
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Integrated
Circuit
Systems, Inc.
Preliminary Information
M675
VOLTAGE CONTROLLED SAW OSCILLATOR
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 compati-
bility. 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).
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
BLOCK DIAGRAM
MM667705
PIN ASSIGNMENT (5 x 7.5mm SMT)
M67755
(Top View)
Figure 1: Pin Assignment
Sample of Available Output Frequencies
VCSO Center Frequencies1 (MHz)
M675-01
M675-02
Applications
155.5200
622.0800
SONET/SDH
156.2500
625.0000
Gigabit Ethernet
161.1328
644.5313 Gigabit Ethernet FEC
167.3316
669.3266
SONET/SDH FEC
Table 1: Sample of Available Output Frequencies
Note 1: Specify VCSO center frequencies at time of order
VIN
CLK_EN
SAW Delay Line
Phase
Shifter
FOUT
nFOUT
Figure 2: Block Diagram
M675 Datasheet Rev 0.4
Revised 16Nov2004
M675 Voltage Controlled SAW Oscillator
Integrated Circuit Systems, Inc. ● Networking & Communications ● www.icst.com ● tel (508) 852-5400
1 page  
Integrated
Circuit
Systems, Inc.
PARAMETER MEASUREMENT INFORMATION
M675
VOLTAGE CONTROLLED SAW OSCILLATOR
Preliminary Information
Output Rise and Fall Time
80%
Clock 20%
Outputs
tR
80%
VP-P
20%
tF
Figure 3: Output Rise and Fall Time
Output Duty Cycle
nFOUT
FOUT
tPW
(Output Pulse Width)
odc =
tPW
tPERIOD
tPERIOD
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
5 of 6
Revised 16Nov2004
Integrated Circuit Systems, Inc. ● Networking & Communications ● www.icst.com ● tel (508) 852-5400
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet M675.PDF ] | |
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