Specifications

Cinterion
®
ALAS5V Hardware Interface Description
Contents
124
 ALAS5V_HID_v00.030a 2019-03-20
Confidential / Preliminary
Page 4 of 124
2.4 Sample Application .......................................................................................... 58
2.4.1 Prevent Back Powering....................................................................... 60
2.4.2 Sample Level Conversion Circuit........................................................ 61
2.4.3 Sample Circuit for Antenna Detection................................................. 62
3 GNSS Interface.......................................................................................................... 65
3.1 GNSS Interface Characteristics....................................................................... 66
4 Operating Characteristics ........................................................................................68
4.1 Operating Modes ............................................................................................. 68
4.2 Power Up/Power Down Scenarios................................................................... 69
4.2.1 Turn on ALAS5V................................................................................. 69
4.2.2 Signal States after First Startup.......................................................... 70
4.2.3 Turn off or Restart ALAS5V ................................................................ 73
4.2.3.1 Switch off ALAS5V Using AT Shutdown Command ............ 73
4.2.3.2 Restart ALAS5V Using AT Command ................................. 74
4.2.3.3 Turn off ALAS5V Using IGT Line......................................... 75
4.2.3.4 Turn off or Restart ALAS5V in Case of Emergency ............ 76
4.2.3.5 Overall Shutdown Sequence............................................... 77
4.2.4 Automatic Shutdown........................................................................... 78
4.2.4.1 Thermal Shutdown.............................................................. 79
4.2.4.2 Deferred Shutdown at Extreme Temperature Conditions.... 80
4.2.4.3 Undervoltage Shutdown...................................................... 81
4.2.4.4 Overvoltage Shutdown........................................................ 81
4.3 Power Saving................................................................................................... 82
4.3.1 Power Saving while Attached to GSM Networks ................................ 82
4.3.2 Power Saving while Attached to WCDMA Networks .......................... 84
4.3.3 Power Saving while Attached to LTE Networks.................................. 85
4.4 Power Supply................................................................................................... 86
4.4.1 Power Supply Ratings......................................................................... 87
4.4.2 Minimizing Power Losses ................................................................... 94
4.4.3 Monitoring Power Supply by AT Command........................................ 94
4.5 Operating Temperatures.................................................................................. 95
4.6 Electrostatic Discharge .................................................................................... 96
4.7 Reliability Characteristics................................................................................. 96
5 Mechanical Dimensions and Mounting................................................................... 97
5.1 Mechanical Dimensions of ALAS5V ................................................................ 97
5.2 Mounting ALAS5V onto the Application Platform............................................. 99
5.2.1 SMT PCB Assembly ........................................................................... 99
5.2.1.1 Land Pattern and Stencil..................................................... 99
5.2.1.2 Board Level Characterization............................................ 100
5.2.2 Moisture Sensitivity Level ................................................................. 101
5.2.3 Soldering Conditions and Temperature ............................................ 101
5.2.3.1 Reflow Profile.................................................................... 101
5.2.3.2 Maximum Temperature and Duration................................ 102