SP40T datasheet(14/71 Pages) INFINEON

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Data Sheet

Revision1.1

2020-05-14

SP40T

Tire Pressure Monitoring Sensor

Specification

2.3.10

LF-Receiver

5) Measured with the Data Sheet Reference Board, 50 Ohm RF output terminated with 50Ohm, VDDPA = 2.1V

Table 2-13 LF Receiver Operating Conditions

Parameter

Symbol

Values

Unit

Note or Test Condition Number

Min.

Typ.

Max.

LF Carrier Frequency1)

1) LF sensitivity levels are only valid for the specified carrier frequency range.

fLF

115

125

135

kHz

22.1

LF Data Rate

DRLF

3.8

3.9

4.2

kbit/s

22.2

LF Data Duty Cycle

DCLF

22.3

LF Data amplitude

change speed

ACSLF

1.5

Vpp/s Valid for input signals

up to 10mVpp

22.4

Table 2-14 LF Receiver Characteristics

Parameter

Symbol

Values

Unit

Note or Test Condition Number

Min.

Typ.

Max.

Input differential

capacitance

CLFdiff

2.5

3.9

at 125kHz

23.1

Input differential

resistance

RLFdiff

MOhm at 125kHz, AGC inactive, -

40°C to 90°C

23.4

1-(T/°C -90)/70

MOhm at 125kHz, AGC inactive,

90°C <=T<= 125°C

23.5

LF Receiver settling

time after power on

tON_Set.

3.9

After receiver power-on

23.6

Table 2-15 LF Receiver Characteristics (Data Reception Mode)1)2)

1) LF telegram detection sensitivity specified for 100% modulation depth.

2) Specified sensitivities require calling Lib_LF_Sensitivity() in application code, [1].

Parameter

Symbol

Values

Unit

Note or Test Condition Number

Min.

Typ.

Max.

LF Data Threshold

settling time

tSettling

During LF- telegram

preamble

24.1

LF Telegram

Detection Sensitivity

Snodet

0.1

mVpp

24.2

Sdet

1.3

mVpp -20°C to 90°C

24.3

2.5

mVpp -40°C to 125°C

24.4

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