FTS250-010.0M

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 H E FTS250-HP GPS Disciplined Oscillator Connor-Winfield’s GPS Disciplined Oscillators (GPSDOs) were created specifically for precision timing, synchronization and time stamping applications requiring high end, cost sensitive solutions. By combining our uniquely designed phase lock loop circuitry, a GPS/GNSS receiver and our high-quality oscillators, Connor Winfield is able to offer a wide variety of superior, cost-effective GPS timing solutions. The FTS250-HP Series modules provide customer applications with the precise timing capabilities needed to optimize critical system performance. General Description The FTS250-HP-010.0M Frequency and Time Standard module is a GPS/GNNS driven, mixed-signal phase lock loop, providing a 1 PPS CMOS output from an onboard GPS/GNSS timing receiver. The FTS250-HP generates a 10 MHz CMOS and a 10 MHz SINE output from an intrinsically low jitter voltage controlled crystal oscillator. The FTS250-HP locks to a 1 PPS reference derived from the onboard GPS receiver from which It generates the 10MHz outputs and the 1PPS output. The module can also be programmed to lock to an external 10 MHz reference or to an external 1 PPS reference. Alarms are provided to indicate Loss-of-Lock, Holdover, and Antenna Fault status. The onboard 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. 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). Features E • Phase locked 10 MHz output (other frequencies available upon request) T • Multiple Holdover Thermal Stability Options • Phase locked 1 PPS output • Three selectable references: GPS, External 10 MHz or External 1 PPS • Three alarm outputs. (Loss-of-Lock, Holdover and Antenna Fault) • Serial input and output ports (GPS receiver) • Master reset • +3.3 Volt power supply • Temperature Range: -40°C to 85°C • Meets ITU-T G.811 Wander Generation Mask • SMA Bulkhead GPS Antenna Connection • Package: 28-pin Through-Hole • Physical Dimensions: 2.8” x 1.725” x 0.368” (71mm x 43.82mm x 9.34mm) • Fixed Position Bulletin Revision Date SG176 04 03 July 2019 • Multiple Output Frequency Options in addition to 10MHz. Functional Block Diagram Figure 1 FTS250 Module SERIAL OUTPUT SMA Bulkhead Connector HOLDOVER STATUS LOCK STATUS ANTENNNA FAULT STATUS LEA-M8F 1 PPS CMOS OUTPUT (GPS Receiver) SERIAL IN 1 PPS GPS REF NS2000-1PPS 10 MHz REF DPLL 1 PPS REF RESET SYNC 1 CONTROL SYNC 2 CONTROL DISABLE Micro Controller ANALOG PLL DRIVER 10 MHz CMOS OUTPUT 10 MHz SINE OUTPUT Pin Description Table 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 33Ω DRIVER & TRANSLATION TCXO or OCXO MCLK VCXO Phase Control NCO Adjust 1PPS Pulse Generator BOOT SEL Pin # LOW JITTER Pin Name Vcc2 GND *Reset *Disable 1 PPS Ref Input GND 10 MHz Ref Input NU NU NU NU *Bootsel GND Vcc1 Antenna Supply Voltage GND RXA TXA SYNC2 Control SYNC1 Control Lock Status Holdover Status Antenna Fault Status 1 PPS CMOS Output GND 10 MHz CMOS Output GND 10 MHz SINE Output Description Note 3.3V ±5% Supply Voltage Hardware Reset for GPS Circuitry. Pull low to Reset Open/High = Enabled Outputs. Low = Disabled Outputs External 1 PPS reference 1 1 1 External LVCMOS 10 MHz Reference Used for Factory Programming Used for Factory Programming Used for Factory Programming Used for Factory Programming Normally High - Pulled low during Wi125 software updates 1 3.3V ±5% Supply Voltage 2.7 to 13.2V Input Supply Voltage for the Antenna. Max 45mA continuous current 2 RS-232 Communication receive signal for UART-0 RS-232 Communication transmit signal for UART-0 Lock mode selection control signal 2 Lock mode selection control signal 1 High = Unit is locked to the selected reference High = Unit is in Holdover High = Fault detected on the Antenna Supply Voltage (Self Clearing) 1 PPS LVCMOS Output 10 MHz LVCMOS Output (Defalt) 1 1 1 1 1 1 1, 3 10 MHz Sine Output (~9dBm) Note: 1. 3.3 VDC (LVCMOS) compatible 2. If OCXO option is chosen, must add OCXO current to this base current. FTS250-HP Data Sheet #: SG176 Page 2 Rev: 04 Date: 07/03/19 Specifications subject to change without notification. See Connor-Winfield’s website for latest revision. © Copyright 2019 The Connor-Winfield Corporation Not intended for life support applications. 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 -40 85 °C 1 Operating Specifications Table 3 Symbol Parameter Minimum VCC1 Supply Voltage 1 3.135 ICC1 Supply Current 1 VCC2 Supply Voltage 2 3.135 ICC2 Supply Current 2 TO Temperature Range -40 tJTOL Input Jitter Tolerance 30 ns tAQ_GPS GPS Input Acquisition Time 100 sec 3 tAQ_EXT External Input Acquisition Time 100 sec 3 FCAP Capture/Pull-in Range Nominal 3.3 Maximum Units Notes 3.465 V 2 A 0.270 3.465 V 0.036 3.3 A 85 °C O scillator Performance Dependent upon holdover option chosen ppm FBW Jitter Filter Bandwidth 0.8 Hz DC Duty Cycle 45/55 % RMS RMS Phase Noise 10 Hz - 2 MHz 12 kHz - 2 MHz 1.2 0.6 ps Holdover/Wander Generation Performance Frequency Stability Wander Generation Specification 2 See Holdover Specification Options ppm 4 5 ITU-T G.811 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. Includes unidirectional temperature stability, Vcc stability, and 24 hours of aging. FTS250-HP Data Sheet #: SG176 Page 3 Rev: 04 Specifications subject to change without notification. See Connor-Winfield’s website for latest revision. © Copyright 2019 The Connor-Winfield Corporation Not intended for life support applications. Date: 07/03/19 Mode Control Table Table 4 SYNC 1 0 0 1 1 SYNC 2 0 1 0 1 Operating Mode Force Holdover Lock to External 10 MHz reference* Lock to External 1 PPS reference (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 VIH High Level Input Voltage 1.7 4.0 Units 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 Total Harmonic Distortion 9 2.2 dBm % 10 MHz Sine Output Typical Table 6 Units Notes GPS Receiver Specifications Parameter Specifications Time to First Fix: Cold: Aided Cold Start Timing Fix: 29 sec