features ? phase locked 10 mhz output ? 1 pps output ? 3 selectable references: gps, external 10 mhz or external 1 pps ? holdover ? three alarm outputs. (loss-of-lock, holdover and antenna fault) ? serial input and output ports (gps receiver) ? master reset ? +3.3 volt power supply ? commercial temp (0-70 c) ? meets itu-t g.811 wander generation mask ? meets etsi-prc wander generation mask (with ocxo reference) ? mcx gps antenna connection ? fixed position unit ? package: 32-pin through-hole ? physical dimensions: 4.15 x 3.3 x 0.718 (105.41mm x 83.82mm x 18.22mm) 125 series fts125-ctv-010.0 mhz gps disciplined oscillators 2111 comprehensive drive aurora, illinois 60505 phone: 630- 851- 4722 fax: 630- 851- 5040 www.conwin.com bulletin sg185 revision 02 date 03 jan 12 issued by eng general description the fts125-ctv-010.0 mhz frequency and time standard module is a tcxo gps driven, mixed-signal phase lock loop, providing a 1 pps cmos output from a connor-winfeld gps timing receiver and generating a 10 mhz cmos and a 10 mhz sine output from an intrinsically low jitter voltage controlled crystal oscillator. the fts125 can lock to a 10 mhz reference derived from the on-board gps receiver or an external 10 mhz reference or to an external 1 pps reference. alarms are provided to indicate loss-of-lock, holdover, and antenna fault. the on-board gps receiver requires an outdoor mounted gps antenna for the best stability and consistent performance. the mode control inputs are used to manually switch between references and/or holdover. the user application should monitor the alarm outputs and manually switch modes as needed. serial i/o lines provide access to the nmea messages from the gps receiver (referenced in the connor-winfelds wi125 user manual. contact connor-winfeld sales for a copy). the serial i/o lines can be used to access gps timestamp information, or to verify that the receiver has recovered from an alarm condition. the reset is used to reset the gps receiver (if needed). d a t a s h e e t available at digi-key www.digikey.com
fts125-ctv data sheet #: sg185 p age 2 rev: 02 date: 01/03/12 ? copyright 2012 the connor-winfeld corp. all rights reserved specifcations subject to change without notice functional block diagram figure 1 cpld analog filter 1 / n low jitter vcxo or ocvcxo driver driver & translation antennna fault status 1 pps cmos output lock status holdover status serial output (a, b, c) 10 mhz cmos output 10 mhz sine output dpfd boot sel serial in (a, b, c) gps ref 33 33 mcx connector fts125 module 1 pps 10 mhz ref 1 pps ref reset sync 1 control sync 2 control disable wi12 5 (gps receiver) ocxo or tcxo reference jtag (programming only) ?
fts125-ctv data sheet #: sg185 p age 3 rev: 02 date: 01/03/12 ? copyright 2012 the connor-winfeld corp. all rights reserved specifcations subject to change without notice typical application figure 2
fts125-ctv data sheet #: sg185 p age 4 rev: 02 date: 01/03/12 ? copyright 2012 the connor-winfeld corp. all rights reserved specifcations subject to change without notice pin description table 1 pin # pin name description 1 txc rs-232 communication transmit signal for uart2 (optional) 2 txb rs-232 communication transmit signal for uart1 (optional) 3 txa rs-232 communication transmit signal for uart0 (optional) 4 gnd 5 rxc rs-232 communication receive signal for uart2 (optional) 6 rxb rs-232 communication receive signal for uart1 (optional) 7 rxa rs-232 communication receive signal for uart0 (optional) 8 *bootsel normally high - only pulled low for rs-232 re-programming of gps software. default state is pulled high internally. 9 10 mhz ref input external lvcmos 10 mhz reference (optional). default state is pulled high internally. 10 *reset hardware reset for the gps timing circuitry. pull low to reset. default state is pulled high internally. 11 gnd 12 1 pps ref input external lvcmos 1 pps reference (optional). default state is pulled high internally. 13 gnd 14 antenna supply voltage antenna supply voltage. limit continuous current to 45ma max. 15 gnd 16 vcc1 supply voltage for gps timing circuitry. 17 vcc2 supply voltage for noise clean-up and interfacing circuitry. 18 gnd 19 sync1 control lock mode control signal 1. see table 4 for functional description. default state is pulled high internally. 20 sync2 control lock mode control signal 2. see table 4 for functional description. default state is pulled high internally. 21 *disable open/high = enabled outputs. pull low to disable the 10 mhz cmos and sine outputs. default state is pulled high internally. 22 unused 23 holdover status high = unit is in holdover 24 lock status high = unit is locked to selected reference. 25 antenna fault status high = a fault has been detected on pin 14 (antenna supply voltage) 26 1 pps cmos output 1 pps cmos output provided by the wi125 27 gnd 28 10 mhz cmos output 10 mhz low jitter cmos output 29 unused 30 unused 31 gnd 32 10 mhz sine output 10 mhz ac coupled low jitter sine output
fts125-ctv data sheet #: sg185 p age 5 rev: 02 date: 01/03/12 ? copyright 2012 the connor-winfeld corp. all rights reserved specifcations subject to change without notice notes: 1. stresses beyond those listed under absolute maximum rating may cause permanent damage to the module. these are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under operating specifcations is not implied. exposure to absolute maximum rated conditions for extended periods may affect device reliability. 2. requires external regulation and supply decoupling. 3. cold power-up. 4. holdover will be re-calculated with each successful lock. yearly aging represents 1 continuous year in holdover. 5. relative to 25c. absolute maximum rating table 2 symbol parameter minimum maximum units n otes v cc power supply voltage -0.3 3.7 volts 1 v in input voltage -0.3 4.6 volts 1 v preamp antenna supply voltage 2.7 13.2 volts 1 t s storage temp erature -30 80 c 1 operating specifcations table 3 symbol parameter minimum nominal maximum units notes v cc 1 supply voltage 1 3.135 3.3 3.465 v i cc 1 supply current 1 with tcxo .200 .300 a v cc 2 supply voltage 2 3.135 3.3 3.465 v 2 i cc 2 supply current 2 with vcxo/tcvcxo .038 .060 a t o temperature range 0 70 c t jtol input jitter tolerance 30 ns t aq_gps gps input acquisition time 120 sec 3 t aq_ext external input acquisition time 90 sec 3 oscillator performance pll option: vcxo (ctv)) f cap capture/pull-in range 50 ppm f bw jitter filter bandwidth 6 hz typ. dc duty cycle 45/55% rms rms phase noise 10 hz - 2 mhz 20 ps typ. 12 khz - 2 mhz 0.5 ps typ. holdover/wander generation performance 4 reference option: int tcxo (ctv) t sta temperature stability 0.5 ppm 5 v sta vcc stability 0.1 ppm a yearly yearly aging 2 ppm wander generation specifcation itu-t g.811
fts125-ctv data sheet #: sg185 p age 6 rev: 02 date: 01/03/12 ? copyright 2012 the connor-winfeld corp. all rights reserved specifcations subject to change without notice input and output characteristics table 5 lvcmos inputs and outputs symbol parameter minimum maximum units notes v ih high level input voltage 1.7 4.0 v v il low level input voltage -0.5 0.8 v v oh high level output voltage 2.4 v v ol low level output voltage 0.4 v c o output capacitance 10 pf 10 mhz sine output symbol parameter typical units notes load 50 ohms output power 9 db m total harmonic distortion 2.2 % gps receiver specifcations table 6 parameter specifcations notes acquisition/tracking sensitivity -155dbm/-156dbm acquisition time: hot start w/ network assist outdoor: <2 sec indoor: (-148dbm) <5 sec stand alone cold: <45 sec warm: <38 sec hot: <5 sec re-acquisition: <1sec (90% confdence) supported protocols network assist, nmea 0183 reset generation (i/o pin 10 - reset) the power-on-reset for the fts125 is generated on-board. if it is desired to extend the power-on-reset signal or provide a manual reset of the gps receiver, pull this signal low. mode control table table 4 * note: holdover is not supported in this mode; loss of the 10mhz reference will rail the pll output until the reference returns or another mode is selected. sync 1 sync 2 operating mode 0 0 force holdover 0 1 lock to external 10 mhz reference* 1 0 lock to external 1 pps reference 1 1 (default) lock to gps signal
fts125-ctv data sheet #: sg185 p age 7 rev: 02 date: 01/03/12 ? copyright 2012 the connor-winfeld corp. all rights reserved specifcations subject to change without notice phase noise: offset frequency (hz)) ctv (dbc/hz) 10 -70 100 -105 1k -135 10k -145 100k -152 1m -158 phase noise figure 3 antenna requirements table 7 parameter notes the fts125 antenna connector is an mcx (female) the antenna supply voltage provided to pin 14 must be within the range of 2.7 to 13.2v (amr); the antenna must be able to operate at this voltage the antennas continuous current draw must be <=45ma the antenna must have a full sky view for optimal receiver performance an active antenna with a minimum 10db gain (including cable loss) should be used standard 125 series models are designed for fxed position operation only. contact connor-winfeld sales for mobile application model offerings
fts125-ctv data sheet #: sg185 p age 8 rev: 02 date: 01/03/12 ? copyright 2012 the connor-winfeld corp. all rights reserved specifcations subject to change without notice allan variance C ctv figure 4 wander generation plot C ctv versus g.811 wander generation mask figure 5 1 10 10 0 1,000 10,00 0 100,000 0.01 0.10 1.00 10.0 0 1 00.0 0 1 ,000.0 0 1 0,000.00 100,000.00 1,000,000.00 observ ation interv al (sec ) mtie (ns)
fts125-ctv data sheet #: sg185 p age 9 rev: 02 date: 01/03/12 ? copyright 2012 the connor-winfeld corp. all rights reserved specifcations subject to change without notice package dimensions figure 6 recommended footprint dimensions figure 7 0.038" hole thru all x32 0.065" pad x32 fts125 dimensions and keepout area to p v iew soldering and cleaning recommendations hand solder, leaded wave solder, and lead-free wave solder processes are recommended for attaching the fts125 after refow processes are complete. since the fts125 does not have hermetic enclosure, hand cleaning the leads is recommended and the module should not be completely immersed.
ordering information ex: fts125-coo-010.0mhz fts125 c o o -010.0m temp range wi125 reference pll oscillator output frequency c = 0-70c t = tcxo v = vcxo * cto option is not available 2111 comprehensive drive aurora, illinois 60505 phone: 630- 851- 4722 fax: 630- 851- 5040 www.conwin.com revision date note 00 10/28/10 fts125-ctv for public release 01 05/27/11 block diagram updated with wi125 receiver & soldering recommendations 02 01/03/12 added package & dimension information to features available at digi-key www.digikey.com
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