ASY-MDEV-GPS-SR-DB Linx Technologies

SR SERIES MASTER DEVELOPMENT SYSTEM DAUGHTER BOARD USERS GUIDE DESCRIPTION The SR Series GPS receiver module is a self-contained high-performance GPS receiver with an on-board antenna, LNA and SAW filter. Based on the SiRFstar III chipset, it provides exceptional sensitivity, even in dense foliage and urban canyons. The modules very low power consumption helps maximize runtimes in battery powered applications. With over 200,000 effective correlators, the SR Series receiver can acquire and track up to 20 satellites simultaneously in just seconds, even at the lowest signal levels. These features along with the modules standard NMEA data output make it easy to integrate, even by engineers without previous RF or GPS experience. The Linx SR Series GPS modules offer a simple, efficient and cost- effective method of adding GPS capabilities to any product. The Master Development System daughter board contains the surface mount SR Series GPS module on a single board with through-hole headers. This small board makes prototyping with the SR Series module very easy. It should be noted that the on-board patch antenna is sensitive to PCB layout, ground plane size and product construction. As a result, performance can vary with these conditions. ORDERING INFORMATION PART DESCRIPTION ASY-MDEV-GPS-SR-DB SR Series Master Development System Daughter Board Revised 2/14/12ELECTRICAL SPECIFICATIONS PCB LAYOUT 1.20 Parameter Designation Min. Typical Max. Units Notes (47.24) POWER SUPPLY 0.04 x 10 Supply Voltage V 3.0 4.3 VDC (1.02) CC Supply Current I 1 CC Peak 31 49 mA 0.10 (2.54) Sleep <0.1 mA 1.10 Backup Battery Voltage V 1.3 6.0 VDC BAT (27.94) Backup Battery Current I 10 A BAT ENVIRONMENTAL Operating Temperature Range -30 +85 C 0.10 Storage Temperature Range -40 25 +85 C (2.54) Table 1: SR Series Receiver Specifications 1.00 0.10 (25.40) (2.54) Notes: Figure 2: MDEV-GPS-SR-DB PCB Layout Dimensions 1. V = 3.3V CC Please see the SR Series GPS Module Data Guide for full specifications, The daughter board uses 0.02 diameter round header pins on 0.1 centers. features and operation instructions. These headers can be soldered directly to the PCB or plugged into a matching socket to enable easy removal. *CAUTION* SCHEMATIC This product incorporates numerous static-sensitive components. Always wear an ESD wrist strap and observe proper ESD handling U1 procedures when working with this device. Failure to observe this 10 9 GND GND GND GND precaution may result in module damage or failure. 1 8 GND VCC VCC GND 2 7 VBACKUP VBACKUP EN EN/ON OFF 3 6 TXM TX MR 4 5 RXM RX LED LED PIN ASSIGNMENTS RXM-GPS-SR J1 J2 GND 1 GND 1 2 2 GND GND 3 3 NC NC TXM 4 VCC 4 RXM 5 5 NC NC 6 VBACKUP 6 TXM VCC LED 7 7 RXM NC 8 8 R1 VCC EN/ON OFF 9 9 NC VBACKUP 50k 10 GND 10 LED NC NC NC GND EN NC GND GND Figure 3: MDEV-GPS-SR-DB Schematic Figure 1: MDEV-GPS-SR-DB Pin Assignments Page 2 Page 3