User's Guide

ATOP3.5G Product Description

80447ST10636A rev.10 – 2015-03-03

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Mod. 0808 2011-07 Rev.2

Figure 9

describes the internal setup of NFC_ANT pins, with

= 1 k, R

= 2.7 k, C

= 1 nF,

vmid

= 100 nF.

Figure 9 ATOP 3.5G internal setup of NFC antenna

9.6 Antenna placement

Care must be taken to introduce sufficient distance between the various antennas in the system.

In particular, if an active GNSS antenna is positioned too close to a 3G cellular antenna, the LNA

of the active GNSS antenna will amplify any spurious that the 3G antenna may radiate in the

GNSS frequency bands. For more information, refer to section 15.

9.7 Electrical safety

ATOP 3.5G is intended only for installation in a restricted area location.

It shall be supplied by a limited power source complying with clause 2.5 of EN 60950-1 and

mounted on a V1 flammability class material or better.

it shall be supplied by a power supply which next features:

 If you do not use overcurrent protection devices: Current of short-circuit of power supply

< 8 A. / Apparent power < 100 VA;

 If you use overcurrent protection devices: Current of short-circuit < 333 A. / Apparent

power < 250 VA. (The rated current of overprotection device shall be < 5A).

9.8 Software package

For customer production and end-of-line testing, the following software tools are provided to

interface to the module:

 ATOP test software example in source

 Parameters settings in OTP (IMEI, RF parameters)

 Flashing tool for the application processor

A flashing tool for the utility processor can be downloaded from a third party web site.