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M675-01-BET

P1-P3P4-P6
M675 Datasheet Rev 0.5 Revised 29Jul2009
Integrated Device Technology, Inc. ● Communication Modules ● www.idt.com ● tel (508) 852-5400
M675
V
OLTAGE
C
ONTROLLED
SAW O
SCILLATOR
Preliminary Information
G
ENERAL
D
ESCRIPTION
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
).
F
EATURES
◆ 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
P
IN
A
SSIGNMENT
(5 x 7.5mm SMT)
Figure 1: Pin Assignment
B
LOCK
D
IAGRAM
Figure 2: Block Diagram
Sample of Available Output Frequencies
VCSO Center Frequencies
1
(MHz)
Note 1: Specify VCSO center frequencies at time of order
Applications
M675-01 M675-02
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
M675
(Top View)
1
2
34
5
6
VIN
C
LK_EN
VCC
nFOU
T
GND FOUT
M675
CLK_EN
VIN
FOUT
nFOUT
SAW Delay Line
Phase
Shifter
M670
M675
M675 Voltage Controlled SAW Oscillator
M675 Datasheet Rev 0.5 2 of 6 Revised 29Jul2009
Integrated Device Technology, Inc. ● Communication Modules ● www.idt.com ● tel (508) 852-5400
M675
V
OLTAGE
C
ONTROLLED
SAW O
SCILLATOR
Preliminary Information
P
IN
D
ESCRIPTIONS
Number Name
I/O
Configuration Description
1VIN
Input Frequency control input.
2CLK_EN
Input Internal pull-up resistor
1
Clock enable:
Logic
1
enables normal operation
.
Logic
0
stops the output clock;
nFOUT
is held high,
FOUT
is held low.
3GND
Ground Power supply ground connection.
4
5
FOUT
nFOUT
Output No internal terminator Clock output pair. Differential LVPECL.
6VCC
Power Power supply connection, connect to +
3.3
V.
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).
A
BSOLUTE
M
AXIMUM
R
ATINGS
1
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
.
Symbol Parameter Rating Unit
V
I
Inputs -
0.5
to V
CC
+
0.5
V
V
O
Outputs -
0.5
to V
CC
+
0.5
V
V
CC
Power Supply Voltage
4.6
V
T
S
Storage Temperature -
55
to +
125
o
C
Table 3: Absolute Maximum Ratings
R
ECOMMENDED
C
ONDITIONS
OF
O
PERATION
Symbol Parameter Min Typ Max Unit
V
CC
Positive Supply Voltage
2.97 3.3 3.63
V
T
A
Ambient Operating Temperature
-
40 25
+
85
o
C
Table 4: Recommended Conditions of Operation
M675 Datasheet Rev 0.5 3 of 6 Revised 29Jul2009
Integrated Device Technology, Inc. ● Communication Modules ● www.idt.com ● tel (508) 852-5400
M675
V
OLTAGE
C
ONTROLLED
SAW O
SCILLATOR
Preliminary Information
E
LECTRICAL
S
PECIFICATIONS
FOR
M675-01
DC Characteristics for M675-01
Unless stated otherwise, V
CC
= 3.3 Volts + 10%, T
A
= 0 to 85
o
C, VCSO Freq.s = 155.52 MHz, Outputs terminated into 180
Ω
to ground
Symbol Parameter Pin Min Typ Max Unit
Power Supply V
CC
Positive Supply Voltage
VCC
2.97 3.3 3.63
V
I
CC
Power Supply Current
85 125
mA
Control
Voltage
V
IN
Input Control Voltage Range
VIN
0 3.3
V
V
IN
Input Impedence
100
kΩ
Clock Enable
Pull-up
1
Note 1: Internally pulled up to Logic 1 (normal operation) if left unselected.
V
IH
Input High Voltage
CLK_EN
2
V
cc
+
0.3
V
V
IL
Input Low Voltage -
0.3
0.8
V
I
IH
Input High Current 5 µA
I
IL
Input Low Current -1
50
µA
R
pullup
Internal Pull-up Resistor
51
kΩ
Differential
Outputs
V
OH
Output High Voltage
FOUT, nFOUT
V
cc
-
0.98 V
cc
-
0.75
V
V
OL
Output Low Voltage
V
cc
-
1.95 V
cc
-
1.63
V
V
P
-
P
Peak to Peak Output Voltage
2
Note 2: Single-ended measurement. See Figure 3, Output Rise and Fall Time, on pg. 5.
0.450 0.625 0.85
V
P
-
P
I
OUT
Output Current
20
mA
Table 5: DC Characteristics for M675-01
AC Characteristics for M675-01
Unless stated otherwise, V
CC
= 3.3 Volts + 10%, T
A
= 0 to 85
o
C, VCSO Freq. = 155.52 MHz, Outputs terminated into 180
Ω
to ground
Symbol Parameter Min Typ Max Unit
Notes
Control Voltage V
IN
Modulation Bandwidth
VIN
500
kHz
Output F
OUT
Output Center Frequency Range
M675-01 125 175
MHz
APR Absolute (Guaranteed) Pull-Range
1
Note 1: Also fully meets ±50 ppm minimum pull-range specification that is commonly required.
±
100
ppm
f
STAB
Frequency Stability
100
ppm p-p
At any givin V
IN
L
IN
Tuning Linearity
6
%
V
IN
=
0.3
to
3.0
V
Best fit straight line
K
VCO
VCO Gain
400
ppm/V
V
IN
=
0.3
to
3.0
V
Non-harmonic Spurious
-50 -77
dBc
Φ
n SSB (single sideband)
Phase Noise, offset
from carrier
100Hz Offset -52
dBc/Hz
1kHz Offset -80
dBc/Hz
10kHz Offset -112
dBc/Hz
100kHz Offset -136
dBc/Hz
1MHz Offset -146
dBc/Hz
J(t) Jitter (rms)
12kHz to 20MHz 0.36
ps rms
50kHz to 80MHz 0.50
ps rms
odc Output Duty Cycle
2
Note 2: See Parameter Measurement Information on pg. 5.
45 55
%
t
R
Output Rise Time
2
for
FOUT,
nFOUT
275 425
ps
20
% to
80
%
t
F
Output Fall Time
2
for
FOUT,
nFOUT
275 425
ps
20
% to
80
%
Table 6: AC Characteristics for M675-01
P1-P3P4-P6

M675-01-BET

Mfr. #:
Buy M675-01-BET
Manufacturer:
IDT
Description:
Clock Synthesizer / Jitter Cleaner VCSO
Lifecycle:
New from this manufacturer.
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