MSTM-S3-TR CONNOR-WINFIELD | Alldatasheet

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Features

  • 5V Miniature Timing Module  Redundant References  2 Synchronous Outputs Available From 8 kHz to 77.76MHz  40 sec., Filtered, Hold Over History  Operational Status Flags MSTM-S3-TR Stratum 3 Timing Module

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Aurora, Illinois 60505 Phone: 630-851-4722 Fax: 630- 851- 5040 www.conwin.com Bulletin TM027 Page 1 of 16 Revision P05 Date 02 DEC 02 Issued By MBatts

Data Sheet #: TM027 Page 2 of 16 Rev: P05 Date: 12 / 02 / 02 © Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice General Description The Connor-Winfield Stratum 3 Simplified Control Timing Mod- ule acts as a complete system clock module for general Stratum 3 timing applications. The MSTM is designed to replace similar units from TF Systems (TF118B) and Raltron (SY0001B). Full external control input allows for selection and monitoring of any of four possible operating states: 1) Holdover, 2) External Reference #1, 3) External Reference #2, and 4) Free Run. Table #1 illustrates the control signal inputs and corresponding opera- tional 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 sig- nal that is phase locked to External Reference Input #2. Hold- over 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. Free Run ModeFree Run mode operation (A=0, B=0) is a guar- anteed output of 4.6 ppm of the nominal frequency. Alarm signals are generated at the Alarm Output during Hold- over and Free Run operation. Alarm Signals are also generated by Loss-of-Lock and Loss-of-Reference conditions. A high level indicates an alarm condition. Real-time indication of the opera- tional mode is available at unique operating mode outputs on pins 1-4. Control loop 0.1 Hz filters effectively attenuate any reference jitter, smooth out phase transients, comply with wander transfer and jitter tolerances. Absolute Maximum Rating Table 2 Symbol Parameter Minimum Nominal Maximum Units Notes VCC Power Supply Voltage -0.5 7.0 Volts 1.0 VI Input Voltage -0.5 V CC + 0.5 Volts 1.0 Ts Storage Temperature -55 100 deg. C 1.0 Functional Block Diagram Figure 1 Stratum3 OCXO Stratum3 OCXO Holdover FIFO Holdover FIFO DACDAC Phase Build Out Circuit Phase Build Out Circuit Tuning Voltage Monitor Tuning Voltage Monitor Free Run Ref #1 Ref #2 Hold Over CNTL A CNTL B Sync_Out Ref Control Ref Control Ex Ref 1 Ex Ref 2 PLL_TVL Free Run Hold Over LOL & LOR Alarm_Out DPLL Reference Clock Opt_Out* *Only one Opt_Out option is available per module CNTL CNTL Operationa l Ref 1 Ref 2 Hold Over Free Run PLL Unlock Alarm Out A B Mode 0 0 Free Run (Default Mode) 0 0 0 1 0 1 External Normal 1 0 0 0 0 0 1 0 Reference PLL_Unlock 1 0 0 0 1 0 #1 LOR 0 0 1 0 0 1 External Normal 0 1 0 0 0 0 0 1 Reference PLL_Unlock 0 1 0 0 1 0 #2 LOR 0 0 1 0 0 1 1 1 Hold Over 0 0 1 0 0 1 Function Control Table Table 1

Data Sheet #: TM027 Page 3 of 16 Rev: P05 Date: 12 / 02 / 02 © Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice NOTES: 1.0: Stresses beyond those listed under Absolute Maximum Rating may cause damage to the device. Operation beyond Recommended Conditions is not implied. 2.0: Logic is 3.3V CMOS 3.0 GR-1244-CORE 3.2.1 Recommended Operating Conditions Table 3 Symbol Parameter Minimum Nominal Maximum Units Notes Vcc Power supply voltage 4.75 5.00 5.25 Volts VTH Reset threshold voltage 4.25 4.5 Volts VIH High level input voltage - TTL 2.0 V CC Volts VIL Low level input voltage - TTL 0 0.8 Volts tIN Input signal transition - TTL 250 ns CIN Input capacitance 15 pF VOH High level output voltage, 2.4 5.25 Volts 2.0 IOH = -4.0mA, VCC = min. VOL Low level output voltage, 0.4 Volts IOL = 12.0 mA, V CC = min. tTRANS Clock output transition time 4.0 ns tPULSE 8kHz input reference pulse 30 ns width( positive or negative) TOP Operating temperature 0 70 °C Specifications Table 4 Parameter Specifications Notes Frequency Range (Sync_Out) 8 kHz to 77.76 MHz Frequency Range (Opt_Out) 8 kHz to 77.76 MHz Supply Current 250 mA typical, 400 mA during warm-up (Maximum) Timing Reference Inputs 8 kHz - 19.44 MHz 3.0 Wander Transfer GR-1244-CORE 5.4 Jitter Generation GR-1244-CORE 5.5, GR-253-CORE 5.6.2.3 Jitter Transfer GR-1244-CORE 5.5, GR-253-CORE 5.6.2.1 Free Run Accuracy 4.6 ppm over T OP Hold Over Stability ±0.37 ppm for initial 24 hrs 4.0 Inital Offset ±0.05 ppm Temperature ±0.28 ppm Drift ±0.04 ppm Maximum Hold Over History 40 seconds Pull-in/ Hold-in Range ±13.8 ppm minimum 5.0 Lock Time 30 seconds typical DPLL Bandwidth < 0.1 Hz 4.0: Hold Over stability is the cumulative fractional frequency offset as described by GR-1244-CORE, 5.2 5.0: Pull-in Range is the maximum frequency deviation from nominal clock rate on the reference inputs to the timing module that can be overcome to pull into synchronization with the reference

Data Sheet #: TM027 Page 4 of 16 Rev: P05 Date: 12 / 02 / 02 © Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice

Ordering Information

MSTM-S3-TR-(Input Reference Frequency)(Opt_Out Frequency)-(Primary Output) 1= 1.544 MHz Primary Output ÷ N option: 02.048M = 2.048MHz 2= 2.048 MHz 2= 2.048 MHz 016.384M = 16.384 MHz 8= 8 kHz 8= 8 kHz 019.44M = 19.44 MHz 9= 19.44 MHz N= No output 032.768M = 32.768 MHz S= Other S= Other 038.88 M = 38.88 MHz Reference Clock Out option: 077.76 M = 77.76 MHz 6= 16.384 MHz 9= 19.44 MHz Example: MSTM-S3-TR-88-038.88M Pin Description Table 5 Pin # Connection Description 1 Hold Over Indicator output. High output when Hold Over mode is selected by control pins. 2 Ref 1 Indicator output. High output when Ref 1 mode is selected by control pins. 3 Ref 2 Indicator output. High output when Ref 2 mode is selected by control pins. 4 Free Run Indicator output. High output when Free Run mode is selected by control pins.

5 GND Ground

6 Alarm _Out Alarm output. High output if module is in Free Run, or Hold Over, or LOR.

7 CNTL A Mode control input

8 CNTL B Mode control input

9 PLL_Unlock Indicates that the PLL is not locked to a reference. 10 Tri-State/GND 0 = Normal operation, 1= Tri-State. Pin is pulled low internally. Ground pin for normal operation. 11 Sync_Out Primary timing output signal. Signal is sychronized to reference.

12 GND Ground

13 Opt_Out Secondary output signal. Signal is derived from Sync_Out or from an internal reference clock depending upon the choosen configuration.

14 GND Ground

15 Ex_Ref_2 External Input Reference #2

16 GND Ground

17 Ex_Ref_1 External Input Reference #1

18 Vcc +5V dc supply

Data Sheet #: TM027 Page 10 of 16 Rev: P05 Date: 12 / 02 / 02 © Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice 2 msec < t < 4.125 msec∆ m Change in Operational Mode Operational Mode Indicator ∆tm MSTM-S3-TR Mode Indicator Delay Figure 12 10 usec < ∆tm < 65 usec

Data Sheet #: TM027 Page 12 of 16 Rev: P05 Date: 12 / 02 / 02 © Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Solder Clearance Figure 15 .030" PIN LAND ALL SOLDER AND/OR WIRE TAGS SHALL NOT EXTEND MORE THAN .020" BELOW PC BOARD BOTTOM SURFACE .020" .020" MAX.

layer of solder mask. See Figure 17. Figure 17. For the pin diameter of .040” a hole signal lines to pass through. The MSTM-S3-TR is not in a hermetic enclosure. recommended after reflow processes. regulation such as a DC/DC converter. are intended for signal grounds.

Data Sheet #: TM027 Page 15 of 16 Rev: P05 Date: 12 / 02 / 02 © Copyright 2001 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Revision Re vision Date Note P00 7/27/01 Prelim inary Release P01 8/01/01 Added PO R figure and Tri-state pin P02 8/14/01 Added new input frequency P03 4/9/02 Added Opt_Out information P04 4/9/02 Updated Pin descriptions P05 12/2/02 Corrected Table 1

Aurora, Illinois 60505 Phone: 630-851-4722 Fax: 630- 851- 5040 www.conwin.com