Available at Digi-Key www.digikey.com 2111 Comprehensive Drive Aurora, Illinois 60505 Phone: 630- 851- 4722 Fax: 630- 851- 5040 www.conwin.com D A T A S 125 Series FTS125-CTV-010.0 MHz GPS Disciplined Oscillators 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-Winfield 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-Winfield’s Wi125 User Manual. Contact Connor-Winfield 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). H Features E •1 PPS output •Phase locked 10 MHz output •3 selectable references: GPS, External 10 MHz or External 1 PPS •Holdover E •Three alarm outputs. (Loss-of-Lock, Holdover and Antenna Fault) •Serial input and output ports (GPS receiver) T •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) Bulletin Revision Date Issued By SG185 02 03 Jan 12 ENG Functional Block Diagram Figure 1 OCXO or TCXO REFERENCE FTS125 Module SERIAL OUTPUT (A, B, C) MCX Connector BOOT SEL HOLDOVER STATUS LOCK STATUS ANTENNNA FAULT STATUS Wi125 (GPS Receiver) 1 PPS CMOS OUTPUT SERIAL IN (A, B, C) 33Ω 1 PPS ∆ GPS REF 10 MHz REF DPFD 1 PPS REF RESET SYNC 1 CONTROL SYNC 2 CONTROL CPLD ANALOG FILTER LOW JITTER VCXO or OCVCXO 1/N DRIVER 33Ω DISABLE JTAG (Programming Only) DRIVER & TRANSLATION FTS125-CTV Data Sheet #: SG185 Page 2 10 MHz CMOS OUTPUT 10 MHz SINE OUTPUT Rev: 02 Date: 01/03/12 © Copyright 2012 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Typical Application Figure 2 FTS125-CTV Data Sheet #: SG185 Page 3 Rev: 02 Date: 01/03/12 © Copyright 2012 The Connor-Winfield Corp. All Rights Reserved Specifications 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 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 13 GND 14 Antenna Supply Voltage 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 22 Unused 23 Holdover Status 24 Lock Status 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 29 Unused 30 Unused 31 GND 32 10 MHz SINE Output Normally HIGH - Only pulled low for RS-232 re-programming of GPS software. Default state is pulled high internally. External LVCMOS 1 PPS reference (Optional). Default state is pulled high internally. Antenna Supply Voltage. Limit continuous current to 45mA Max. Open/High = enabled outputs. Pull low to disable the 10 MHz CMOS and SINE outputs. Default state is pulled high internally. High = Unit is in Holdover High = Unit is locked to selected reference. 10 MHz low jitter CMOS output 10 MHz AC coupled low jitter SINE output FTS125-CTV Data Sheet #: SG185 Page 4 Rev: 02 Date: 01/03/12 © Copyright 2012 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Absolute Maximum Rating Table 2 Symbol Parameter Minimum Maximum Units N otes VCC Power Supply Voltage -0.3 3.7 Volts 1 VIN Input Voltage -0.3 4.6 Volts 1 VPREAMP Antenna Supply Voltage 2.7 13.2 Volts 1 TS Storage Temperature -30 80 °C 1 Operating Specifications Table 3 Symbol Parameter Minimum Nominal Maximum VCC1 Supply Voltage 1 ICC1 Supply Current 1 with TCXO 3.135 3.3 3.465 V .200 .300 A VCC2 Supply Voltage 2 ICC2 Supply Current 2 with VCXO/TCVCXO 3.135 3.3 3.465 V .038 .060 A TO Temperature Range 0 70 °C tJTOL Input Jitter Tolerance tAQ_GPS GPS Input Acquisition Time 30 tAQ_EXT External Input Acquisition Time Capture/Pull-in Range 2 ns 120 sec 3 90 sec 3 VCXO (CTV)) ±50 ppm FBW Jitter Filter Bandwidth 6 Hz Typ. DC Duty Cycle 45/55% RMS RMS Phase Noise 10 Hz - 2 MHz 12 kHz - 2 MHz 20 ps Typ. 0.5 ps Typ. Notes Oscillator Performance PLL Option: FCAP Units Holdover/Wander Generation Performance Reference Option: 4 Int TCXO (CTV) TSTA Temperature Stability ±0.5 ppm VSTA Vcc Stability 0.1 ppm AYEARLY Yearly Aging Wander Generation Specification 2 ppm ITU-T G.811 5 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 Specifications” 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 25°C. FTS125-CTV Data Sheet #: SG185 Page 5 Rev: 02 Date: 01/03/12 © Copyright 2012 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Mode Control Table Table 4 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 * 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. Input And Output Characteristics Table 5 LVCMOS Inputs and Outputs Minimum Maximum Symbol Parameter Units VIH High Level Input Voltage 1.7 4.0 V VIL Low Level Input Voltage -0.5 0.8 V VOH High Level Output Voltage 2.4 V VOL Low Level Output Voltage 0.4 V CO Output Capacitance 10 pF Symbol Parameter Load 50 ohms Output Power 9 dBm Total Harmonic Distortion 2.2 % Notes 10 MHz Sine Output Typical Units Notes GPS Receiver Specifications Table 6 Parameter Specifications Acquisition/Tracking Sensitivity -155dBm/-156dBm Notes Acquisition Time: Hot Start w/ Network Assist Outdoor: <2 sec Indoor: (-148dBm) <5 sec Stand Alone Supported Protocols Cold: <45 sec Warm: <38 sec Hot: <5 sec Re-acquisition: <1sec (90% confidence) 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. FTS125-CTV Data Sheet #: SG185 Page 6 Rev: 02 Date: 01/03/12 © Copyright 2012 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice 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 antenna’s 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 fixed position operation only. Contact Connor-Winfield Sales for mobile application model offerings Phase Noise Figure 3 Phase Noise: Offset Frequency (Hz)) FTS125-CTV Data Sheet #: SG185 CTV (dBc/Hz) 10 -70 100 -105 1k -135 10k -145 100k -152 1M -158 Page 7 Rev: 02 Date: 01/03/12 © Copyright 2012 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Allan Variance – CTV Figure 4 Wander Generation Plot – CTV versus G.811 Wander Generation Mask Figure 5 100,000 10,000 MTIE (ns) 1,000 100 10 1 0.01 0.10 1.00 10.00 100.00 1,000.00 10,000.00 100,000.00 1,000,000.00 Observation Interval (sec) FTS125-CTV Data Sheet #: SG185 Page 8 Rev: 02 Date: 01/03/12 © Copyright 2012 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Soldering and Cleaning Recommendations Hand solder, leaded wave solder, and lead-free wave solder processes are recommended for attaching the FTS125 after reflow 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. Package Dimensions Figure 6 Recommended Footprint Dimensions Figure 7 0.038" Hole Thru All x32 0.065" Pad x32 FTS125 Dimensions and Keepout Area Top View FTS125-CTV Data Sheet #: SG185 Page 9 Rev: 02 Date: 01/03/12 © Copyright 2012 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Available at Digi-Key www.digikey.com 2111 Comprehensive Drive Aurora, Illinois 60505 Phone: 630- 851- 4722 Fax: 630- 851- 5040 www.conwin.com Ordering Information Ex: FTS125-COO-010.0MHz FTS125 C Temp Range O Wi125 Reference O PLL Oscillator C = 0-70°C T = TCXO V = VCXO -010.0M Output Frequency * CTO Option is not available 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