SP40T datasheet(60/71 Pages) INFINEON

Part #	SP40T

Description	Tire Pressure Monitoring Sensor Quality Requirement Category: Automotive

PDF	71 Pages

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Manufacturer	INFINEON [Infineon Technologies AG]

Direct Link	http://www.infineon.com

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60 / 71 page

Data Sheet

Revision1.1

2020-05-14

SP40T

Tire Pressure Monitoring Sensor

Application Circuit

C102)

218

C11

Optional capacitors, only used if EMC

performance, which depends on PCB layout,

needs to be improved. Typically not needed if

PPx pins are not connected. If used, place as

close as possible to the pins.

C12

C13

C14

L42)

7.1

e.g. Coilcraft 4513TC-715XGL (Q=51)

R12)

kOhm

26.000

MHz

e.g. NX3225SA

1) A capacitor with a minimum impedance at RF center frequency should be chosen. The value for this optimal capacitor

depends on capacitor material, size etc. Please refer to manufacturer documentation.

2) The Q-factor of this antenna circuit is 6.2. However, application may require another Q-factor. Hence the LF antenna

circuit is understood as example.

Table 6-1 Application circuit component values (cont’d)

Unit

Min

Nom

Max

Unit

Comment

SP40T Datasheet(PDF) 60 Page - Infineon Technologies AG