SCG2020-019.440M [CONNOR-WINFIELD]
Support Circuit, 1-Func, MODULE-14;
| 型号： | SCG2020-019.440M |
| 厂家： | 
CONNOR-WINFIELD CORPORATION |
| 描述： | Support Circuit, 1-Func, MODULE-14 ATM 异步传输模式 电信 电信集成电路 |
| 文件： | 总20页 (文件大小：524K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SCG2000 Series
Synchronous Clock
Generators
PLL
2111 Comprehensive Drive
Aurora, Illinois 60505
Phone: 630-851-4722
Fax: 630- 851- 5040
www.conwin.com
Application
Features
The Connor-Winfield SCG2000 Series
provides high precision phase lock loop
frequency translation for the
• 3.3V High
Precision PLL
• Tri-State Capability
• Active Alarms
telecommunication applications.
SCG2000 Series is well suited for use in
line cards, service termination cards and
similar functions to provide reliable
reference, phase locked, synchronization
and low phase gain for TDM, PDH, SONET
and SDH network equipment. The
SCG2000 Series provides a jitter filtered,
wander following output signal
• Guaranteed Free
Run ±20ppm
• 1 Sec. Acquisition
Time
synchronized to a superior Stratum or peer
input reference signal.
Bulletin
SG029
Page
1 of 20
Revision
A04
Date
29 JAN 02
Data Sheet #: SG029
Page 1 of 20
Rev: A04 Date: 01 / 29 / 02
Issued By
MBATTS
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
General Description
Loss-of-Lock, (LOL). During the LOR alarm, the SCG2000
will also enter a Free Run state which will guarantee a 20
ppm accurate output. Additionally the Free Run mode may
be entered manually by asserting a high signal to the Free
Run Enable pin. The outputs may be put into the tri-state
high impedance condition for external testing purposes by
asserting a high signal to the Tri-State Enable pin.
The SCG2000 Series are 3.3 Volt components that
typically draw less than 100 mA. All models have an
acquisition time of approximately 1.0 second and can be
used in applications that require temperature rating of 0° -
70° C. All models have a 33W resistor in series with the
oscillator output. The SCG2000 package dimensions are
.775” x .825” x .35” on a six layer FR4 board with surface
mount pins. Parts are assembled using high temperature
solder to withstand surface mount reflow process.
The SCG2000 Series provides high precision phase lock loop
frequency translation for the telecommunication applications. The
SCG2000 products generate a CMOS output from an intrinsically
low jitter, voltage controlled crystal oscillator. Most models
provide a jitter attenuated, internal reference that is connected to
a Reference Output pin.
SCG2000 Series is well suited for use in line cards, service
termination cards and similar functions to provide reliable
reference, phase locked, synchronization for TDM, PDH, SONET
and SDH network equipment . The SCG2000 Series provides a
low phase gain (<0.2dB), jitter filtered, wander following output
signal synchronized to a superior Stratum or peer input reference
signal.
The SCG2000 Series include the following features: Free
Run, Tri-state and alarm outputs for Loss-of-Reference, (LOR),
Functional Block Diagram
Figure 1
Tri-State Enable
(Pin 10)
LOL Alarm Output
(Pin 7)
ALARM
LOR Alarm Output
(Pin 6)
DETECTION
Free Run Enable
(Pin 5)
Reference Input
(Pin 8)
ANALOG
FILTER
FREE RUN
CONTROL
Oscillator Output
(Pin 9)
DIVIDER
DPFD
VCXO
Optional Oscillator Output
(Pin 1)
DIVIDER
Reference Output
(Pin 1)
(Not available on
models with optional
oscillator output)
Input Freq. Select A
(Pin 14)
Input Freq. Select B
(Pin 13)
Model Comparison Table
Table 1
Model
Max
Duty
Cycle
Input
Ref Freq
Reference Output
(Pin #1)
Oscillator Output
(Pin #9)
Notes
SCG2000 8-64 kHz
SCG2010 19.44 MHz
SCG2020 19.44 MHz
SCG2030 8-64 kHz
SCG2050 8-64 kHz
SCG2070 19.44 MHz
40/60
40/60
40/60
45/55
40/60
40/60
= Input Ref Freq.
8 kHz
1.544 MHz to 125.0 MHz
19.44 MHz
Basic Model
19.44 MHz
77.76 MHz
= Input Ref Freq.
19.44 MHz
1.544 MHz to 125.0 MHz
77.76 MHz
Tight Duty Cycle
51.84 MHz, 77.76 MHz
51.84 MHz, 77.76 MHz
Ref Output = Osc Output
*Features which differentiate a model from the base model (SCG2000) are highlighted in boldface color and in the notes column.
Data Sheet #: SG029
Page 2 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Pin Description
All SCG2000 Models
Table 2
Pin #
Connection
Reference Output
TCK
Description
1
2
3
4
5
Output frequency is dependent on SCG model
JTAG pin that is used only by Connor-Winfield for programming. Do not connect
JTAG pin that is used only by Connor-Winfield for programming. Do not connect
Ground
TMS
Ground
Free Run Enable/TDI
GND
Free Run enable pin. 1 = Free Run at nominal frequency ±20ppm. Input is pulled to
6
7
Loss of Reference (LOR)
Loss of Lock (LOL)
Reference Input
Oscillator Output
Tri-State enable
Vcc
Alarm indicator. 1 = The reference has been lost.
Alarm indicator. 1 = Phase lock has been lost
8
Input reference frequency
9
Output frequency is dependent on SCG model
10
11
12
13
14
Tri State control for all outputs. 1 = Hi-Z, 0 = normal. Input is pulled to GND.
3.3V Supply Voltage.
TDO
JTAG pin that is used only by Connor-Winfield for programming. Do not connect
Control pin B used to select input frequency. Input is pulled to GND.
Control pin A used to select input frequency. Input is pulled to GND.
Input Freq. Select B
Input Freq. Select A
Typical Application
Figure 2
BITS
System
Signal
Input Select
Line Card 1
S
A
CW’s SCG
2000/4000
MUX
A
Clock out
RCV
B
Y
CW’s STM/MSTM module
Y
MUX
B
S
Line Card N
Timing Card #N
S
A
CW’s SCG
2000/4000
Clock out
RCV
A
MUX
CW’s STM/MSTM module
Y
Y
B
MUX
B
S
System Select
Data Sheet #: SG029
Page 3 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Absolute Maximum Rating
Table 3
All SCG2000 Models
Symbol
Vcc
Parameter
Minimum
-0.5
Nominal
Maximum
Units
Volts
Notes
Power Supply Voltage
Input Voltage
4
V1
-0.5
5.5
150
Volts
Ts
Storage Temperature
-65
deg. C
Specifications
All SCG2000 Models
Table 4
Parameter
Voltage
Specifications
Notes
1.0
3.3V ±5%
Current
100 mA
Temperature Range
Input Jitter Tolerance
Jitter Bandwidth
Acquisition Time
Capture/Pull-in Range
Output Duty Cycle
Output Rise and Fall Time
Output Load
0 to 70°C
6.25 us, 10 Hz (.05 UI @ 8000 Hz)
<10 Hz
Approx 1.0 second
±25 ppm Minimum
40/60 % Min/Max @ 50% Level
3 ns @ 20% to 80% output level
30 pF
2.0
Alarms
LOR, LOL Status on seperate outputs
±20 ppm
Free Run Accuracy
Package
Fr4 SM 0.775" x .825" x 0.350"
<0.4 ns Typical
TDEV
MTIE
2 ns Typical
Input And Output Characteristics
Table 5
All SCG2000 Models
Symbol
VIH
Parameter
Minimum
Nominal
Maximum
Units
V
Notes
High Level Input Voltage
Low Level Input Voltage
I/O to Output Valid
2
0
5.5
0.8
10
VIL
V
TIO
nS
pF
CO
Output Capacitance
10
VHO
VIO
High Level Output Voltage loH = -4mA
Low Level Output Voltage loL = 8mA
Input Reference Signal Pulse Width
2.4
30
Vcc Min.
Vcc Max.
0.4
nS
TIR
NOTES: 1.0: Requires external regulation
2.0: From a 20 ppm offset in reference frequency
`
Data Sheet #: SG029
Page 4 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Output Jitter Specifications
Table 6
All SCG2000 Models
Jitter BW 10 Hz - 1 MHz
pS (RMS) m UI
Sonnet Jitter BW 12 KHz - 20 MHz
Frequency (MHz)
1.544
pS (RMS)
TBD
4
m UI
TBD
60
TBD
0.122
0.573
0.972
TBD
1.11
1.34
1.47
TBD
2.33
3.75
TBD
2.048
0.008
0.037
0.047
TBD
16.384
19.44
35
2.25
2.4
50
20.48
TBD
30
TBD
1.25
1.15
1.25
TBD
2.25
1.5
37.056
44.736
49.152
51.84
0.046
0.051
0.061
TBD
30
30
TBD
30
77.76
0.175
0.186
125.0
30
Output Programming
Alarm Status
All SCG2000 Models
Table 7
All SCG2000 Models
Table 8
Tristate Free Run Output
LOL Output LOR Output Alarm Output
0
1
0
0
X
1
Locked to reference selected (default)
Hi-Z Tristate condition
0
1
X
0
0
1
No alarm
Loss-of-Lock
Loss-of-Reference
Free run at nominal frequency
Package Dimensions
Figure 3
Recommended Footprint Dimensions
Figure 4
0.800 (20.32mm)
0.640 (16.26mm)
0.080 (2.03mm)
0.050 TYP
(1.27mm)
0.100 TYP
(2.54mm)
Pin 1
*Pin Coplanarity is ±0.004”
0.050 TYP
(1.27mm)
0.650
(16.51mm)
Data Sheet #: SG029
Page 5 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Tape and Reel Dimensions
Figure 5
Data Sheet #: SG029
Page 6 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
SCG2000 Typical TDEV
Figure 6
SCG2000 Typical MTIE
Figure 7
Data Sheet #: SG029
Page 7 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
SCG2000 Switch from Free Run to a new Reference
Figure 8
SCG2000 Switch from a Reference to Free Run
Figure 9
Data Sheet #: SG029
Page 8 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
SCG2000 Step Response due to a Freq. Step
Figure 10
SCG2000 1µs Phase Transient
Figure 11
Data Sheet #: SG029
Page 9 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
SCG2000 Jitter Attenuation
Figure 12
Jitter Attenuation vs. Input Frequency
0.0
-5.0
-10.0
-15.0
-20.0
-25.0
-30.0
-35.0
-40.0
-45.0
1
10
100
1000
INPUT Jitter frequency (Hz)
Typical System Test Setup
Figure 13
GPS or LORAN
Timing Source
This device supplies system time
information. It can be thought of as
supplying "absolute time" reference
information
Possible Choice :
Stanford Research Model: FS700
S
a
m
p
l
e
M
T
IE
D
a
t
a
f
o
r
S
T
M
-S
3
/M
S
T
M -S 3
1
0
0
.
.
.
0
0
0
E
E
E
-
-
-
6
9
9
T
y
p
i
c
a
l
r
e
s
p
o
n
s
e
-
3
0
0
0
s
e
c
o
n
d
t
e
s
t
-
J
i
t
t
e
r
a
p
p
l
i
e
d
(
2
U
I
@
1
0
H
z
)
r
e
f
d
a
t
e
A
P
R
2
2
1
9
9
8
k
d
h
1
0
10
1
M
1
T
IE
MHz
2
4
4
4
-
-
5
5
.2
.2
M
M
a
s
s
k
(
(
A
B
)
1
2
2
4
4
a
a
k
k
)
1
4
-
5
.6
M
s
G
R253- 5.4.4 .3.2
1
.
0
E
-
9
1
0
0
.0
E
-
3
1
.
0
E
+
0
1
0
.0
E
+
0
1
0
0
.0
E
+
0
1
.
0
E
r
+
3
1
0
.
0
E
+
3
Obs e rv ation Time (s )
C
o
p
y
r
i
g
h
t
1
9
9
8
C
o
n
n
o
-
W
i
n
f
i
e
l
d
a
l
l
r
i
g
h
t
s
r
e
s
e
r
v
e
d
Target System Under Test
External
Reference
Input
DS1 rate RZ (1.544 MHz), E1 rate RZ or 8 kHz
clock RZ with noise modulation
Arbitrary
Waveform
Generator
Standards
Compliance
Documents
Clock or BITS logic level
clock input (TTL, CMOS,
etc.)
MTIE, TDEV, Wander Transfer,
and Wander Generation Plots
S
a
m
p
l
e
W
a
n
d
e
r
G
e
n
e
r
a
ti
o
n
(
T
D
E
V
)
f
or
S T M /M ST M -S 3
1
.
0
E
-
6
10
T
y
f
p
i
c
a
a
l
r
e
s
p
o
n
s
e
-
3
0
0
0
s
e
c
o
n
d
t
e
s
t
-
J
i
t
t
e
r
a
p
p
l
i
e
d
(
2
U
I
@
1
0
H
z
)
r
e
d
t
e
A
P
R
2
2
1
9
9
8
k
d
h
MHz
1
0
0
.0
E
-
9
. . . . ...
1
0
.
0
E
-
9
TDEV
G
G
R
R
1
1
2
4
4
4
4
-F
-F
i
i
g
g
5
5
.1
-3
1
.
0
E
-
9
2
Arbitrary
Waveform
Generator
[Noise
1
0
0
.
0
E
-
1
2
0
1
.0
E
-
3
1
0
0
.0
E
-
3
1
.
0
E
+
0
1
0
.0
E
+
0
1
0
0
.0
n
E
+
o
0
1
.
0
E
+
3
C
o
p
y
r
i
g
h
t
1
9
9
8
C
o
n
r-Winfie ld a lll rig hts re s e rv e d
I
n
te
g
r
a
ti
o
n
Ti
m
e
(s
e
c
)
External
Reference
Input
Source]
Time-stamped ensemble
based on absolute time
reference (10MHz input)
10
MHz
DS1 rate [1.544 MHz] BITS Bipolar
Phase Error data output
DS-1, OC-3, OC-12 electrical or optical signals
External
Reference
Input
Tektronix
SJ300E
10
MHz
HP53310A
Modulation Analyzer / Time Interval Analyzer
Wander Analyzer data (IEEE-488)
External
Reference
Input
IEEE-488 Controller
Platform for software
HP 53305A Phase Analyzer
HP E1748A Sync
Measurement
Tektronix Wander Analyzer
Data Sheet #: SG029
Page 10 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Alarm Timing Diagram
Figure 14
LOR (loss-of-reference)
EXT REF
(Divided down to 8 kHz)
INT 8K REF
125 µs
125µs - 250µs
LOR
LOL
31.25µs - 156.25µs
t
t
≤
or
≥
- X
X
Point at which -X <
and is held within that range
t < X
LOL (loss-of-lock)
EXT REF
(Divided down to 8 kHz)
INT 8K REF
LOL (If t > X )
X = 31.25
X = 1 s for models 2010, 2020, 2070
= Pulsing alarm output for models 2010, 2020, 2070
µs for models 2000, 2030, 2050
µ
Solder Profile
Figure 15
250
200
150
Temp
(Deg C)
100
50
0
1
2
3
4
5
6
7
8
Time (minutes)
Recommended Reflow Profile
Peak Temp:
Max Rise Slope:
C/Sec
217 Deg C
1.5 Deg
Time Above 150 C: 100 Sec
Data Sheet #: SG029
Page 11 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
SCG2000
The SCG2000 is Connor-Winfield’s base model
SCG2000 Individual Features:
• Four selectable References: 8, 16, 32, and 64 kHz.
for the SCG2000 Series product line. The
SCG2000 can lock to one of four input
reference frequencies from 8 to 64 kHz which is
selectable using two input control pins.
• Oscillator Output Available: 1.544 MHz to 77.76 MHz.
Input Reference Selection
Table 9
SCG2000
Input Sel A
(Pin #14)
Input Sel B
(Pin #13)
Reference Frequency
(Pin #8)
0
1
0
1
0
0
1
1
8 kHz (default)
16 kHz
32 kHz (see note 4.0)
64 kHz (see note 4.0)
Reference and Output Availability
Table 10
SCG2000
Input Reference
(Pin #8)
Oscillator Output
(Pin #9)
Reference Output
(Pin #1)
8 kHz
16 kHz
8 kHz
16 kHz
19.44 MHz
8 kHz
8 kHz
16 kHz
32 kHz
64 kHz
16 kHz
32 kHz
64 kHz
1.544, 2.048, 16.384 20.48, 37.056,
44.736, 49.152, 51.84 and 77.76 MHz
8 kHz
125.0 MHz
8 kHz
Notes:
Note 4.0:
Not available with 19.44 MHz output.
Data Sheet #: SG029
Page 12 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
SCG2010
The SCG2010 is designed as a clean-up PLL
SCG2010 Individual Features:
• Input References (Pin #8) at 19.44 MHz.
with the input reference frequency (Pin #8)
equal to the oscillator output (Pin #9). The
reference output frequency (Pin #1) is 8 kHz.
The LOL alarm is designed to tolerate 1us p-
p of jitter on the reference. Jitter greater than
1us p-p will result in LOL alarm pulses.
• Oscillator Output (Pin #9) at 19.44 MHz.
• Reference Output (Pin #1) at 8 kHz.
Input Reference Selection
Table 11
SCG2010
Input Sel A
(Pin #14)
Input Sel B
(Pin #13)
Reference Frequency
(Pin #8)
X
X
19.44 MHz (Default)
X= Don’t Care
Reference and Output Availability
Table 12
SCG2010
Input Reference
(Pin #8)
Oscillator Output
(Pin #9)
Reference Output
(Pin #1)
19.44 MHz
19.44 MHz
8 kHz
LOL Alarm Note
Units that use 19.44 MHz reference has a pulsing LOL
Alarm output during an alarm condition. The pulsing
output is at an 8 kHz rate and the pulse width can be
between 1ms and 124 ms wide.
LOR Alarm Note
Units that use 19.44 MHz reference will have a pulse that
appears on the LOR alarm output when the reference is
£ 9.1 MHz.
Data Sheet #: SG029
Page 13 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
SCG2020
The SCG2020 accepts a 19.44 MHz Input
Reference (Pin #8) and provides a 19.44
MHz Output Reference (Pin #1) and a
77.76 MHz signal output on Output #2.
The LOL alarm is designed to tolerate 1ms
p-p of jitter on the reference. Jitter greater
than 1ms p-p will result in LOL alarm
pulses.
SCG2020 Individual Features:
• Input References (Pin #8) at 19.44 MHz.
• Oscillator Output (Pin #9) at 77.76 MHz.
• Reference Output (Pin #1) at 19.44 MHz.
Input Reference Selection
Table 13
SCG2020
Input Sel A
(Pin #14)
Input Sel B
(Pin #13)
Reference Frequency
(Pin #8)
X
X
19.44 MHz (Default)
X= Don’t Care
Reference and Output Availability
Table 14
SCG2020
Input Reference
(Pin #8)
Oscillator Output
(Pin #9)
Reference Output
(Pin #1)
19.44 MHz
77.76 MHz
19.44 MHz
LOL Alarm Note
Units that use 19.44 MHz reference has a pulsing LOL
Alarm output during an alarm condition. The pulsing
output is at an 8 kHz rate and the pulse width can be
between 1ms and 124ms wide.
LOR Alarm Note
Units that use 19.44 MHz reference will have a pulse that
appears on the LOR alarm output when the reference is
£ 9.1 MHz.
Data Sheet #: SG029
Page 14 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
SCG2030
The SCG2030 is similar to the SCG2000
but with a tighter duty cycle of 45/55.
SCG2030 Individual Features:
• Four selectable References: 8, 16, 32, and 64 kHz.
• Oscillator Output Available: 1.544 MHz to 77.76
MHz.
• Tight Duty cycle
Input Reference Selection
Table 15
SCG2030
Input Sel A
(Pin #14)
Input Sel B
(Pin #13)
Reference Frequency
(Pin #8)
0
1
0
1
0
0
1
1
8 kHz (default)
16 kHz
32 kHz (see note 4.0)
64 kHz (see note 4.0)
Reference and Output Availability
Table 16
SCG2030
Input Reference
(Pin #8)
Oscillator Output
(Pin #9)
Reference Output
(Pin #1)
8 kHz
16 kHz
8 kHz
16 kHz
19.44 MHz
8 kHz
8 kHz
16 kHz
32 kHz
64 kHz
16 kHz
32 kHz
64 kHz
1.544, 2.048, 16.384, 20.48, 37.056,
44.736, 49.152, 51.84 and 77.76 MHz
8 kHz
125.0 MHz
8 kHz
Notes:
Note 4.0:
Not available with 19.44 MHz output.
Data Sheet #: SG029
Page 15 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
SCG2050
The SCG2050 can use any 1 of 4
SCG2050 Individual Features:
• Four selectable References: 8, 16, 32, and 64 kHz.
selectable Input References frequencies
with an Oscillator output of 77.76 MHz and
a Reference output of 19.44 MHz
• Oscillator Output Available: 77.76 MHz only
Input Reference Selection
Table 19
SCG2050
Input Sel A
(Pin #14)
Input Sel B
(Pin #13)
Reference Frequency
(Pin #8)
8 kHz (default)
16 kHz
0
1
0
1
0
0
1
1
32 kHz
64 kHz
Reference and Output Availability
Table 20
SCG2050
Input Reference
(Pin #8)
Oscillator Output
(Pin #9)
Reference Output
(Pin #1)
8 kHz
16 kHz
32 kHz
64 kHz
77.76 MHz
77.76 MHz
77.76 MHz
77.76 MHz
19.44 MHz
19.44 MHz
19.44 MHz
19.44 MHz
Data Sheet #: SG029
Page 16 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
SCG2070
The SCG2070 is designed to provide two
output frequencies that are equal. The
Reference Output is actually a second
Oscillator Output. SCG2070 is available
with either 77.76 MHz outputs or with
51.84 MHz outputs. The LOL alarm is
designed to tolerate 1ms p-p
SCG2070 Individual Features:
• Input References (Pin #8) at 19.44 MHz.
• Oscillator Output (Pin #9) equals Reference Output
(Pin #1)
of jitter on the reference. Jitter greater than
1ms p-p will result in LOL alarm pulses.
Input Reference Selection
Table 21
SCG2070
Input Sel A
(Pin #14)
Input Sel B
(Pin #13)
Reference Frequency
(Pin #8)
X
X
19.44 MHz (Default)
X= Don’t Care
Reference and Output Availability
Table 22
SCG2070
Input Reference
(Pin #8)
Oscillator Output
(Pin #9)
Reference Output
(Pin #1)
19.44 MHz
19.44 MHz
77.76 MHz
51.84 MHz
77.76 MHz
51.84 MHz
LOL Alarm Note
Units that use 19.44 MHz reference has a pulsing LOL
Alarm output during an alarm condition. The pulsing
output is at an 8 kHz rate and the pulse width can be
between 1ms and 124 ms wide.
LOR Alarm Note
Units that use 19.44 MHz reference will have a pulse that
appears on the LOR alarm output when the reference is
£ 9.1 MHz.
Data Sheet #: SG029
Page 17 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Ordering Information
SCG{XXXX}-{FFF.FFF}{M}
XXXX equals a specific model (2000, 2010, 2020, 2030, 2050, 2070)
FFF.FFF equals the Oscillator Output frequency (001.544, 002.048, 017.408, 019.44, 077.76, 125.0)
M equals MHZ and is added to all part numbers
Example: To order an SCG2000 with an Oscillator Output of 77.76 MHz,
Order part number SCG2000-077.76M
Data Sheet #: SG029
Page 18 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Revision
A00
Revision DateNote
4/27/01
Advance Informational Release
Added new frequencies
A01
5/22/01
A02
7/10/01
Changed LOL alarm information
Filled in some jitter specs
A03
7/30/01
A04
1/29/02
Added ordering information
Data Sheet #: SG029
Page 19 of 20
Rev: A04 Date: 01 / 29 / 02
© Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
2111 Comprehensive Drive
Aurora, Illinois 60505
Phone: 630-851-4722
Fax: 630- 851- 5040
www.conwin.com
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