Specifications
Table Of Contents
- Contents
- Tables
- Figures
- 1 Introduction
- 2 Interface Characteristics
- 2.1 Application Interface
- 2.1.1 Pad Assignment
- 2.1.2 Signal Properties
- 2.1.3 USB Interface
- 2.1.4 Serial Interface ASC0
- 2.1.5 Serial Interface ASC1
- 2.1.6 Inter-Integrated Circuit Interface
- 2.1.7 UICC/SIM/USIM Interface
- 2.1.8 Enhanced ESD Protection for SIM Interfaces
- 2.1.9 Digital Audio Interface
- 2.1.10 Analog-to-Digital Converter (ADC)
- 2.1.11 RTC Backup
- 2.1.12 GPIO Interface
- 2.1.13 Control Signals
- 2.1.14 JTAG Interface
- 2.1.15 eMMC Interface
- 2.2 GSM/UMTS/LTE Antenna Interface
- 2.3 GNSS Antenna Interface
- 2.4 Sample Application
- 2.1 Application Interface
- 3 GNSS Interface
- 4 Operating Characteristics
- 5 Mechanical Dimensions and Mounting
- 6 Regulatory and Type Approval Information
- 7 Document Information
- 8 Appendix
Cinterion
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ALAS5V Hardware Interface Description
4.5 Operating Temperatures
96
ALAS5V_HID_v00.030a 2019-03-20
Confidential / Preliminary
Page 95 of 124
4.5 Operating Temperatures
See also Section 4.2.4.1 for information about the NTC for on-board temperature measure-
ment, automatic thermal shutdown and alert messages.
Note that within the specified operating temperature ranges the board temperature may vary
to a great extent depending on operating mode, used frequency band, radio output power and
current supply voltage. Note also the differences and dependencies that usually exist between
board (PCB) temperature and ambient temperature as shown in the following Figure 39. The
possible ambient temperature range depends on the mechanical application design including
the module and the PCB with its size and layout. A thermal solution will have to take these dif-
ferences into account and should therefore be an integral part of application design.
Figure 39: Board and ambient temperature differences
Table 26: Board temperature
Parameter Min Typ Max Unit
Operating temperature range -30 +25 +85 °C
Restricted temperature range
1
1. Restricted operation allows normal mode data transmissions for limited time until automatic thermal
shutdown takes effect. Within the restricted temperature range (outside the operating temperature
range) the specified electrical characteristics may be in- or decreased.
-40 +95 °C
Automatic shutdown
2
Temperature measured on ALAS5V board
2. Due to temperature measurement uncertainty, a tolerance on the stated shutdown thresholds may oc-
cur. The possible deviation is in the range of ± 2°C at the overtemperature limit.
<-40 --- >+95 °C
Module
PCB
Thermal conducting
gap filler
Heat
source
Module
Shielding
Component
LGA mounting
Air gap
Reference point
PCB temperature
Application
PCB
Heat dissipation
Reference point
ambient temperature
LGA mounting
Heat sink