CONNOR-WINFIELD MSTM-S3-T2NC

THE CONNOR-WINFIELD CORP.
Stratum 3 Simplified Control
Timing Modules (MSTM-S3-T2NC)
Fig. 1.0
DESCRIPTION
MSTM-S3 PIN ASSIGNMENT
The Connor-Winfield Stratum 3 Miniature
Simplified Control Timing Module acts as a complete system
clock module for general Stratum 3 timing applications. The
MSTM is designed for external control functions. Full
external control input allows for selections and monitoring of
any of four possible operating states: 1) Holdover, 2) External
Reference #1, 3) External Reference #2, and 4) Free Run. The
table below illustrates the control signal inputs and
corresponding operational states:
In the absence of External Control Inputs (A,B), the
MSTM enters the Free Run mode and signals an External
Alarm. The MSTM will enter other operating modes upon
application of a proper control signal. Mode 1 operation (A=1,
B=0) results in an output signal that is phase locked to the
External Reference Input #1. Mode 2 operation (A=0, B=1)
results in an output signal that is phase locked to External
Reference Input #2. Holdover mode operation (A=1, B=1)
results in an output signal at or near the frequency as
determined by the latest (last) locked-signal input values
and the holdover performance of the MSTM.
Alarm signals are generated at the Alarm Output
during Holdover and Free Run operation. Alarm Signals are
also generated by loss-of-lock, loss of Reference, and by a
Tune-Limit indication from the PLL. A Tune-Limit alarm
signal indicates that the OCXO tuning voltage is
approaching within 10% the limits of its lock capability and
that the External Reference Input may be erroneous. A high
level indicates an alarm condition. Real-time indication of
the operational mode is available at unique operating mode
outputs on pins 1-4.
Control loop filters effectively attenuate any
reference jitter and smooth out phase transients.
HOLDOVER
REF 1
REF2
FREERUN
GND
ALARM OUT
CNTL A
CNTL B
+5Vdc
EX REF 1
GND
EX REF 2
GND
CLK_OUT
GND
SYNC_OUT
GND
PLL TVL
BOTTOM VIEW
Fig. 2.0
BLOCK DIAGRAM
CNTL A
CNTL B
EX REF 1
EX REF 2
0
1
2:4 23
FREERUN
REF 1
REF 2
HOLDOVER
PLL TVL
FREE RUN
HOLDOVER
LOCK AND
DETECTION
2:1
MUX
ALARM
OUT
SYNC_OUT
DAC
FILTERS
DAC
STRATUM3
OCXO
TUNING
VOLTAGE
MONITOR
FIFO
TCXO
No
Connect
CLK_OUT
PLL TVL
MSTM-S3
Table 1.0
CONTROL
INPUT
A
B
0
0
1
0
1
0
1
1
OPERATIONAL MODE
REF 1
REF 2
HLDOVER
FREERUN
PLL TVL
ALARM
OUTPUT
0
1
1
1
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
1
0
0
1
0
0
1
0
1
1
0
1
1
1
Free Run (Default)
External
Normal
Reference #1
Tune Limit
LOS+LOL
External
Normal
Reference #2
Tune Limit
LOS+LOL
Holdover
DATA SHEET #: TM020
REVISION #: P00
DATE: 7/18/00
Page 1 of 7
Specifications are subject to change without notice
FILENAME: TM020.DOC
Copyright 1999,2000 Connor-Winfield all rights reserved
THE CONNOR-WINFIELD CORP.
Stratum 3 Simplified Control
Timing Modules (MSTM-S3-T2NC)
Fig. 3.0
1 0 0 0 T R A N P r o f ile
1200
1000
800
TIE (ns)
600
400
200
0
50
60
70
80
90
100
-2 0 0
T im e ( s )
Fig 4.0
S a m p le W a n d e r G e n e r a t io n ( T D E V ) f o r S T M /M S T M -S 3
1 .0 E - 6
T ypical r es po ns e - 3 0 0 0 s eco n d tes t - J it ter applied (2 U I @ 1 0 H z )
r ef dat e A P R 2 2 1 9 9 8
k dh
1 0 0 .0 E - 9
TDEV (sec)
1 0 .0 E - 9
TD EV
1 .0 E - 9
G R 1 2 4 4 - Fig 5 .1
G R 1 2 4 4 - Fig 5 - 3
1 0 0 .0 E - 1 2
1 0 .0 E - 3
1 0 0 .0 E - 3
1 .0 E +0
1 0 .0 E +0
1 0 0 .0 E +0
1 .0 E +3
In t e g r a t io n T im e ( s e c )
DATA SHEET #: TM020
REVISION #: P00
DATE: 7/18/00
Page 2 of 7
Specifications are subject to change without notice
FILENAME: TM020.DOC
Copyright 1999,2000 Connor-Winfield all rights reserved
THE CONNOR-WINFIELD CORP.
Stratum 3 Simplified Control
Timing Modules (MSTM-S3-T2NC)
Fig. 5.0
S amp le M T IE D ata fo r S T M -S 3/M S T M -S 3
1 .0 E - 6
T ypical r es po ns e - 3 0 0 0 s eco nd tes t - J itter applied (2 U I @ 1 0 H z )
r ef date A P R 2 2 1 9 9 8
k dh
MTIE (s)
1 0 0 .0 E - 9
MTIE
1 0 .0 E - 9
1 2 4 4 - 5 .2 Ma s k ( A )
1 2 4 4 - 5 .2 Ma s k ( B)
1 2 4 4 - 5 .6 Ma s k
G R2 5 3 - 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 +3
1 0 .0 E +3
O b s e r va tio n Tim e (s )
Fig. 6.0
CURRENT DRAW
MSTM-S3-T2NC
0.45
0.4
0.35
CURRENT (A)
0.3
0.25
0.2
0.15
0.1
0.05
0
0
10
20
30
40
50
60
TIME (Sec)
DATA SHEET #: TM020
REVISION #: P00
DATE: 7/18/00
Page 3 of 7
Specifications are subject to change without notice
FILENAME: TM020.DOC
Copyright 1999,2000 Connor-Winfield all rights reserved
THE CONNOR-WINFIELD CORP.
Stratum 3 Simplified Control
Timing Modules (MSTM-S3-T2NC)
TABLE 2.0
ABSOLUTE MAXIMUM RATING
SYMBOL
PARAMETER
MINIMUM
NOMINAL
VCC
Power supply voltage (Vcc to GND)
-0.5
VIN
Input voltage with respect to ground
-0.5
TSTG
Storage temperature
-65.0
Note 1.0:
MAXIMUM
+7.0
Vcc+.05
+150.0
UNITS
Volts
Volts
Deg. C
NOTES
1.0
1.0
1.0
Operation of this device at these or any other conditions beyond those listed under Recommended
Operating Conditions is not
implied. Exposure to Absolute Maximum Ratings conditions for extended periods of time may affect device reliability.
TABLE 3.0
INPUT AND OUTPUT CHARACTERISTICS
SYMBOL
PARAMETER
MINIMUM
NOMINAL
VIH
High level input voltage
2.0
(TLL Compatible)
VIL
Low level input voltage
0
(TLL Compatible)
TIN
Input signal transition time
CIN
Input capacitance
VOH
High level output voltage
2.4
@ IOH=-8.0 mA, VCC minimum
VOL
Low level output voltage
@ IOH=8.0 mA, VCC maximum
THL
Clock out transition time high-to-low,
4.0
no load
TLH
Clock out transition time low-to-high,
4.0
no load
TRIP
Input 8 KHz reference signal positive
30
pulse width
TRIN
Input 8 KHz reference signal negative
30
pulse width
TOP1
Standard Operating Temperature
0
TABLE 4.0
PARAMETER
Frequency Range (SYNC_OUT)
Frequency Range (CLK_OUT)
Supply Current
Timing Reference Inputs
Jitter and Phase Tolerance
Wander Generation
Free-Run Accuracy
Holdover Stability
Initial Offset
Temperature
Drift
Holdover History
Pull-in/ Hold-in Range
Lock Time
Correction Period
TVL Alarm
MAXIMUM
UNITS
VCC
V
0.8
V
250
15
nS
pF
NOTES
V
0.4
V
nS
nS
nS
nS
70
Deg. C
SPECIFICATIONS
19.44 MHz
N/C
See Fig. 6.0
8 KHz
Ref-GR-1244-CORE 4.2-4.4
Ref-GR-1244-CORE 5.3
±4.6 ppm
±0.37 ppm
0.05 ppm
0.28 ppm
0.04 ppm
30 seconds
±4.6 ppm Minimum
<100 secs
125 µS
1=WARNING: Reference nearing operational limit
DATA SHEET #: TM020
REVISION #: P00
DATE: 7/18/00
Page 4 of 7
NOTES
5.0
6.0
2.0
3.0
7.0
Specifications are subject to change without notice
FILENAME: TM020.DOC
Copyright 1999,2000 Connor-Winfield all rights reserved
THE CONNOR-WINFIELD CORP.
Stratum 3 Simplified Control
Timing Modules (MSTM-S3-T2NC)
Fig. 7.0
BLOCK DIAGRAM
5 VOLT DC
POWER
SUPPLY
+5Vdc
NETWORK
TIMING
REFERENCE
INPUT
eg. BITS CLOCK, etc.
EX REF 1
GND
EX REF 2
GND
FREE RUN
CLOCK COPY
CLK_OUT
GND
SYNC_OUT
SYSTEM CLOCK
GND
SYSTEM
CONTROL
AND DATA
INPUTS
HOLDOVER
REF 1
REF 2
FREERUN
GND
ALARM OUT
CNTL A
CNTL B
PLL TVL
LOSS OF
REFERENCE
MONITOR
SECTION
Fig 8.0
MSTM-S3
PACKAGE
WITH COVER
MECHANICAL CHARACTERISTICS
MECHANICAL SHOCK 883D 2002 CONDITION B
1500 G’s 0.5 ms.
VIBRATION 883D-2007 CONDITION A
0.06” DA or 20 g Peak Acceleration 20 to 2000 Hz
ENVIRONMENTAL CHARACTERISTICS
TEMPERATURE CYCLE 883D METHOD 1010.7 CONDITION B
10 Cycles –55 to +125 Degrees C.
HTOB - HIGH TEMPERATURE OPERATING BIAS
1000 Hours +125 Degrees C.
DATA SHEET #: TM020
REVISION #: P00
DATE: 7/18/00
Page 5 of 7
Specifications are subject to change without notice
FILENAME: TM020.DOC
Copyright 1999,2000 Connor-Winfield all rights reserved
THE CONNOR-WINFIELD CORP.
Stratum 3 Simplified Control
Timing Modules (MSTM-S3-T2NC)
PIN DESCRIPTIONS
Table 5.0
MSTMS3
PIN #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
PIN NAME
HOLDOVER
REF 1
REF 2
FREERUN
Gnd
ALARM OUT
CNTL A
CNTL B
PLL TVL
Gnd
SYNC_OUT
Gnd
CLK_OUT
Gnd
EX REF 2
Gnd
EX REF 1
+5 Vdc
PIN DESCRIPTION
Output. High when the control inputs select Holdover.
Output. High when the control inputs select EX REF 1.
Output. High when the control inputs select EX REF 2.
Output. High when the control input selects Free Run.
Ground
Output. =1, if (FREERUN + HOLDOVER + LOS + LOL + PLL TVL).
Mode control input.
Mode control input.
Tuning Voltage Alarm. =1 if CAPTURE RANGE NEAR 10% OF EXTREME.
Ground
Synchronized output.
Ground
N/C
Ground
External Reference #2 Input. (8KHz)
Ground
Input. External Reference #1 Input. (8KHz)
+5 Volt DC Supply
NOTES FOR TABLES 1-5
NOTES:
2.0
3.0
4.0
5.0
6.0
7.0
Holdover stability is the cumulative fractional frequency offset containing Initial Offset, Temperature, and Drift
components as described by Bellcore GR-1244-CORE 5.2
Pull-in range is the minimum frequency deviation on the reference inputs to the timing module that can be overcome to
pull itself into synchronization with the reference.
After 100 seconds at stable room temperature.
Consult factory for other frequencies.
REF-GR1244-CORE 3.2.1 R3-1.
At ‘1’ level indicates unit is within the extreme 10% of its operating range tracking the reference.
DATA SHEET #: TM020
REVISION #: P00
DATE: 7/18/00
Page 6 of 7
Specifications are subject to change without notice
FILENAME: TM020.DOC
Copyright 1999,2000 Connor-Winfield all rights reserved
THE CONNOR-WINFIELD CORP.
Stratum 3 Simplified Control
Timing Modules (MSTM-S3-T2NC)
DATA SHEET REVISION HISTORY
REVISION
P00
REVISION DATE
7/18/00
DATA SHEET #: TM020
REVISION #: P00
DATE: 7/18/00
Page 7 of 7
NOTE
Preliminary Realease
Specifications are subject to change without notice
FILENAME: TM020.DOC
Copyright 1999,2000 Connor-Winfield all rights reserved