Specifications
Table Of Contents
- Contents
- Tables
- Figures
- 1 Introduction
- 2 Interface Characteristics
- 2.1 Application Interface
- 2.2 RF Antenna Interface
- 2.3 GNSS Interface
- 2.4 Sample Application
- 3 Operating Characteristics
- 3.1 Operating Modes
- 3.2 Power Up/Power Down Scenarios
- 3.3 Power Saving
- 3.4 Power Supply
- 3.5 Operating Temperatures
- 3.6 Electrostatic Discharge
- 3.7 Blocking against RF on Interface Lines
- 3.8 Reliability Characteristics
- 4 Mechanical Dimensions, Mounting and Packaging
- 5 Regulatory and Type Approval Information
- 6 Document Information
- 7 Appendix
Cinterion
®
EXS62-W/EXS82-W Hardware Interface Description
3.6 Electrostatic Discharge
102
t EXS62-W_EXS82-W_HID_v01.200ee 2022-09-02
Public/ Released
Page 99 of 144
3.6 Electrostatic Discharge
The GSM module is not protected against Electrostatic Discharge (ESD) in general. Conse-
quently, it is subject to ESD handling precautions that typically apply to ESD sensitive compo-
nents. Proper ESD handling and packaging procedures must be applied throughout the
processing, handling and operation of any application that incorporates a EXSx2-W module.
Special ESD protection provided on EXSx2-W:
Main antenna interface: Inductor/capacitor
BATT+: Inductor/capacitor
An example for an enhanced ESD protection for the SIM interface is given in Section 2.1.6.1.
EXSx2-W has been tested according to group standard ETSI EN 301 489-1 (see Table 34). Elec-
trostatic values can be gathered from the following table.
Note: The values may vary with the individual application design. For example, it matters
whether or not the application platform is grounded over external devices like a computer or
other equipment, such as the Thales reference application described in Chapter 5.
3.6.1 ESD Protection for RF Antenna Interface
The following Figure 49 shows how to implement an external ESD protection for the RF anten-
na interface with either a T pad or PI pad attenuator circuit (for RF line routing design see also
Section 2.2.3).
Figure 49: ESD protection for RF antenna interface
Recommended inductor types for the above sample circuits: Size 0402 SMD from Panasonic
ELJRF series (22nH and 18nH inductors) or Murata LQW15AN18NJ00 (18nH inductors only).
Table 26: Electrostatic values
Specification/Requirements Contact discharge Air discharge
ETSI EN 301 489-1
Main antenna interface ± 4kV ± 8kV
BATT+ ± 4kV ± 8kV
JEDEC JESD22-A114D (Human Body Model, Test conditions: 1.5 kΩ, 100 pF)
All SMT interfaces ± 1kV n.a.
ANSI/ESDA/JEDEC JS-002-2018
All SMT interfaces ± 500V Charged Device Model (CDM) n.a.
Main
Antenna
18pF
22nH
ANT_GSM
(Pad 59)
18pF
T pad attenuator circuit
Main
Antenna
18nH
ANT_GSM
(Pad 59)
4.7pF
PI pad attenuator circuit
18nH