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PCF7936AS Fiches technique(PDF) 30 Page - NXP Semiconductors

No de pièce PCF7936AS
Description  Security Transponder (HITAG2)
PDF  32 Pages
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Fabricant  PHILIPS [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PCF7936AS Fiches technique(HTML) 30 Page - NXP Semiconductors

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NXP Semiconductors
Product Specification
Security Transponder (HITAG2)
PCF7936AS
2010 May 04
30
CONFIDENTIAL
11 TEST SETUP
Device characteristics are measured according to the test
setups given below.
Electrical characteristics are measured in a Helmholtz
arrangement
that
generates
an
almost
homogenous
magnetic field at the position of the device under test
(transponder), see Figure 29.
The sense coils detect the absorption modulation induced
by the transponder, whereas the reference coils sense the
magnetic flux generated by the field generating coils only.
The voltage difference measured between the sense coils
and reference coils is proportional to the magnetic field
absorption induced by the transponder.
DUT
FMAX
Figure 28. Mechanical Stress
VDIF
Signal
Generator
~
Reference Coils
(serial connected, in phase)
Reference Coils
(serial connected, in phase)
DUT
Figure 29. Helmholtz setup for electrical characteristics



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