CW25-TIM GPS Receiver - SemiconductorStore.com
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1. Current 10mA RF3V3 DIG 3V3 Standby Current VBATT 1 5uA Interfaces Serial 3 UART ports CMOS levels Multi function I O 1PPS and Frequency Output available on GPIO 0 Event Counter Timer Input Up to 4 x GPIO multi function 2 x LED Status Drive lC External Clock on special build Protocols Network Assist NMEA 0183 Proprietary ASCII and binary message formats 1pps Timing Output 10nS rms accuracy lt 5nS resolution User selectable pulse width Event Input 30ns rms accuracy lt 10ns resolution Frequency Output GPIO 0 10 Hz to 30 MHz CW25 TIM Receiver Type 12 parallel channel x 32 taps up to 32 point FFT Channels taps and FFT can be switched off to minimize power or simulate simpler designs General Processor ARM 966E S on a 0 18u process at up to120 MHz Note 1 The features listed above may require specific software builds and may not all be available in the initial release 2 Please contact factory for other temperature options a Copyright 2010 Navsync Ltd All Rights Reserved Specifications subject to change without notice CW25 TIM GPS MTIE PERFORMANCE The graph below demonstrates the MTIE performance of the CW25 TIM output frequency relative to a Caesium atomic clock with the CW25 TIM operating with a clear view of the sky MTIE Fo 10 00 MHz Fs 1 000 Hz 11 19 03 05 45 08 PM 11 20 03 09 08 18 AM HP 53132A Test 545 10 MHz NCO Samples 55388 Gate 1 s Ref ch2 10 00 MHz Tl Time Data2. CW25 TIM GPS Receiver Description The CW25 TIM is a small OEM surface mount GPS module that has been specifically designed for use in synchronization and timing applications The CW25 TIM has an on board programmable NCO oscillator that outputs a synthesized frequency up to 30 MHz that is steered by the GPS receiver The CW25 TIM has a self survey mode of operation that allows the receiver to enter a K a Applications position hold mode to allow accurate timing i e Synchronization to be continued with only one satellite being a tracked e Timing The output frequency is highly accurate pace Slee and can achieve full PRC MTIE performance and can also track satellites and provide GPS synchronization in weak signal areas such as A CW25 Demo board is available for evaluation of l the CW25 Receiver A full kit contains the Demo indoor applications This reduces the need Board with mounted CW25 TIM or CW25 NAV for high antenna placement typically in many RS232 serial Cable Power Supply Adaptor Region Specific with a 2 1 mm DC plug environments and a 3m TNC Magnetic Patch Antenna The CW25 TIM is an exceptionally small To reduce costs the CW25 Demo Board can be purchased separately with a pick and choose surface mount package 25mm x 27mm x option for above accessories 4mm with a highly integrated architecture that See CW25 Demo User Manual for more detailed requires the minimum of external components formation on thi
3. Only TI 1 gt 2 MTIE Observation Window T au The graph below demonstrates the ability of the CW25 TIM to continue to provide a GPS disciplined output frequency with the GPS aerial located completely inside a building the degradation of MTIE performance is due to the effects of signal multi path MTIE Fo 10 00 MHz Fs 999 0 MHz 2 12 04 02 38 18 PM 2 12 04 05 50 27 PM HP 53132A Test 589 CW25_indoor_tim Samples 11506 Gate 1 s Ref ch2 10 00 MHz Tl Time Data Only TI 1 gt 2 Observation Window T au sec Copyright 2010 Navsync Ltd All Rights Reserved Specifications subject to change without notice N AVSY a C NAvS NC CW25 TIM GPS Receiver NavSync Ltd Europe Bay 143 Shannon Industrial Estate Shannon Co Clare Ireland Phone 353 61 475 666 E mail sales navsync com North America 2111 Comprehensive Drive Aurora IL 60505 USA Phone 630 236 3026 E mail northamerica navsync com www navsync com
4. s unit allowing easy integration into host systems e GPS timing modules contact NavSync for further details P R O D U C T Please contact NavSync for pricing information on the full kit or individual items Block Diagram ANT_SUPPLY RF_3V3 DIG_1V8 1V8_ OUT DIG_3V3 RF Block Regulator f Regulator i amp Reset J RF25IC Control Front RF_IN End Emulation Filter a E aa BB25IC m Comms amp I O TRIM EXT_CLK Bulletin NS18 PB Date 13 April 2010 Filter EEPROM NAvS NC CW25 TIM GPS RECEIVER SPECIFICATIONS SPECIFICATIONS Physical Module dimensions 25mm D x 27mm W x 4 2mm H Supply voltages 3V3 Digital I O 3V3 RF 1V8 Core option 3V Standby Battery Operating Temp 30 C to 80 C Storage Temp 40 C to 85 C 7 Humidity 5 to 95 non condensing Max Acceleration Jerk 4g 1gs sustained for less than 5 seconds Sensitivity Acquisition w network assist 155dBm Tracking 156dBm Aquisition Stand Alone 143dBm Acquisition Hot Start with network assist Outdoor lt 2s Time Indoor 148dBm lt 5s Stand Alone Outdoor Cold lt 45s Warm lt 38s Hot lt 5s Re acquisition lt 0 5s 90 confidence Accuracy Position Outdoor Indoor lt 5m rms lt 50m rms Velocity lt 0 05ms Latency lt 200ms Raw Measurement Accuracy Pseudorange lt 0 3m rms Carrier phase lt 5mm rms Tracking Code and carrier coherent Power 1 fix per second 0 6W typically Coma Mode
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