Rx Path - NXP Semiconductors PN7150 Hardware Design Manual

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NXP Semiconductors

It must be placed on an ISO/IEC10373-6 PCD assembly test bench and the maximum

external field strength that an ISO/IEC14443 compliant device must withstand (12A/m)

must be generated.

Then, the peak to peak voltage at antenna end must be measured with an oscilloscope

using a low parasitic capacitor probe (2pF max).

Depending on the value measured, the customer can decide whether a single 50V

parallel capacitor is suitable

See circle 2 in above Fig 15.

7.2.3 Rx path

In case a small antenna is connected to the PN7150, the peak to peak voltage generated

at antenna ends will be limited.

Then this offers the possibility to simplify the RF path circuitry by removing the

decoupling C

below)

Proof point:

The measurements needed to decide whether or not, the C

removed for a given configuration are still under definition.

See circles 3 in above Fig 15.

AN11756

Application note

COMPANY PUBLIC

caps and connecting directly the R

All information provided in this document is subject to legal disclaimers.

Rev. 1.2 — 15 January 2018

347612

AN11756

PN7150 Hardware Design Guide

to the antenna ends (see drawing

capacitors can be safely

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