WI125

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 E T Bulletin Page Revision Date SG170 1 of 20 04 29 Nov 2011 125 Series Wi125 GPS Receiver TABLE OF CONTENTS 1 INTRODUCTION------------------------------------------------------------------------ 4 2 SPECIFICATION----------------------------------------------------------------------5-6 2.1 2.2 2.3 2.4 Performance --------------------------------------------------------------------------------------------5 Recommended Ratings------------------------------------------------------------------------------6 Absolute Maximum Ratings-------------------------------------------------------------------------6 Block Diagram------------------------------------------------------------------------------------------6 3 PHYSICAL CHARACTERISTICS----------------------------------------------------7-8 3.1 3.2 3.3 Physical Interface Details----------------------------------------------------------------------------7 Wi125 Dimensions-------------------------------------------------------------------------------------8 Solder Pad Size and Placement-------------------------------------------------------------------8 4 SIGNAL DESCRIPTION------------------------------------------------------------ 9-14 4.1 4.2 4.3 4.4 4.5 Power Signals-------------------------------------------------------------------------------------------9 RF Signals--------------------------------------------------------------------------------------------- 10 Emulation/Test Signals----------------------------------------------------------------------------- 10 Control Signals--------------------------------------------------------------------------------------- 11 I/O Signals--------------------------------------------------------------------------------------------- 12 5 SPECIAL FEATURES------------------------------------------------------------------14 5.1 5.2 5.3 User Commands------------------------------------------------------------------------------------- 14 Self-Survey ------------------------------------------------------------------------------------------- 14 Wi125 Embedded Identification------------------------------------------------------------------ 14 6 TAPE AND REEL SPECIFICATIONS-------------------------------------------------15 7 SOLDER PROFILE--------------------------------------------------------------------15 8 APPLICATION HINTS-------------------------------------------------------------16-17 8.1 8.2 8.3 8.4 Power Supply----------------------------------------------------------------------------------------- 16 RF Connection---------------------------------------------------------------------------------------- 16 Grounding---------------------------------------------------------------------------------------------- 17 Battery Backup--------------------------------------------------------------------------------------- 17 ORDERING INFORMATION----------------------------------------------------------18 Wi125 Data Sheet #: SG170 Page 2 of 20 Rev: 04 Date: 11/29/11 © Copyright 2011 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice Figure and Table Contents List of Figures Figure 1 Wi125 Block Diagram---------------------------------------------------------------------------------------7 Figure 2 Wi125 Form and Size---------------------------------------------------------------------------------------8 Figure 3 Wi125 Dimensions-------------------------------------------------------------------------------------------9 Figure 4 Solder Pad Size and Placement------------------------------------------------------------------------ 10 Figure 5 RF Tracking Example-------------------------------------------------------------------------------------- 17 Figure 6 Grounding the Wi125 with a ground plane----------------------------------------------------------- 18 Figure 7 Typical VBATT Supplies---------------------------------------------------------------------------------- 19 List of Tables Table 1 Revision History------------------------------------------------------------------------------------------------2 Table 2 Additional Documentation List------------------------------------------------------------------------------3 Table 3 Wi125 Specification--------------------------------------------------------------------------------------------6 Table 4 Absolute Maximum Ratings---------------------------------------------------------------------------------7 Table 5 Absolute Maximum Ratings---------------------------------------------------------------------------------7 Table 6 Wi125 Signal List----------------------------------------------------------------------------------------------8 Table 7 RF Track & Gap Widths------------------------------------------------------------------------------------ 17 Revision History of Version 1.0 Revision 00 Date 07/20/09 Released By Note Keith Loiselle New Release of Wi125 Data Sheet 01 04/13/10 Dave Jahr Update to 1PPS (timing) Accuracy Specification 02 06/16/10 Dave Jahr 125 Series Revised 03 10/20/11 Dave Jahr Update to 1PPS (timing) Accuracy Specification 04 11/29/11 Dave Jahr RoHS Compliant Update Table 1 Revision History Other Documentation The following additional documentation may be of use in understanding this document. Document Wi125 User Manual By Connor-Winfield Note Wi125 Dev Kit User Manual Connor-Winfield Table 2 Additional Documentation List Wi125 Data Sheet #: SG170 Page 3 of 20 © Copyright 2011 The Connor-Winfield Corp. Rev: 04 Date: 11/29/11 All Rights Reserved Specifications subject to change without notice 1 INTRODUCTION The 125 Series Wi125 is a small OEM surface mount GPS module specifically designed for use in synchronization and timing in WiMax applications. This compact module has an onboard programmable NCO oscillator that outputs a synthesized frequency up to 30 MHz that is steered by a GPS receiver. The self-survey mode of operation allows the receiver to enter a position hold mode allowing accurate timing to be continued with only one satellite being tracked. Additionally, the 125 Series Wi125 has phase alignment of 1 PPS/10 MHz with a very stable holdover. The 1 PPS/10 MHz outputs maintain phase alignment with holdover being base only on the local oscillator, dismissing spurious GPS measurements during reacquisition. When the receiver regains GPS lock after a period of holdover, the 1PPS and 10 MHz outputs maintain phase alignment and are offset in frequency at the maximum rate of 100 ppb until the 1 PPS aligns with that of the GPS solution. This slow recovery from holdover allows for uninterrupted operation of the WiMax base station. The Wi125 has a highly accurate output frequency, which can achieve full PRC MTIE performance. Additionally it can track satellites and provide GPS synchronization in weak signal areas including indoor applications, reducing the need for high antenna placement. The Wi125 is RoHS compliant and an exceptionally small surface mount package with a highly integrated architecture that requires a minimum of external components allowing easy integration into host systems. Key information includes: • System Block Diagram • Maximum Ratings • Physical Characteristics Wi125 Dimensions, castellation information Solder Pad and placement information • Signal Descriptions • Special Features • Application Information Power supply modes RF connections Grounding Battery Back-up Over Voltage and Reverse Polarity LED’s Features • 1PPS/ 10 MHz Phase alignment • Stable Holdover • Holdover Recovery • 1 PPS & NCO Frequency Output • GPS/UTC time/scale synchronization to 25 ns RMS • Stable proven design with long term availability and multi-year support • 12 channel hardware correlator processor design • OEM SM footprint 25 x 27 mm • Automatic entry into holdover • Loss-of-lock and entry-into-holdover indication • RoHS Compliant The specifications in the following sections refer to the standard software builds of the Wi125 . The performance and specification of the Wi125 can be modified with the use of customized software builds. Wi125 Data Sheet #: SG170 Page 4 of 20 Rev: 04 Date: 11/29/11 © Copyright 2011 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice 2 SPECIFICATION 1 2.1 Performance Physical Module dimensions Supply voltages Operating Temp Storage Temp Humidity Max Velocity / Altitude Max Acceleration / Jerk 25mm (D) x 27mm (W) x 4.2mm (H) 3V3 (Digital I/O), 3V3 (RF), 1V8 (Core option), 3V (Standby Battery) -30°C to +85°C -40°C to +85°C 2 5% to 95% non-condensing 515ms-1 / 18,000m 4g / 1gs-1 (sustained for less than 5 seconds) Sensitivity Acquisition w/network assist Tracking Acquisition Stand Alone -185dBW -186dBW -173dBW Acquisition Time Hot Start with network assist Stand Alone (Outdoor) Outdoor: