M24LR64-R_12 datasheet(117/128 Pages) STMICROELECTRONICS

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M24LR64-R

RF electrical parameters

Doc ID 15170 Rev 14

117/128

Figure 73 shows an ASK modulated signal, from the VCD to the M24LR64-R. The test

condition for the AC/DC parameters are:

●

Close coupling condition with tester antenna (1 mm)

●

M24LR64-R performance measured at the tag antenna

Figure 73.

M24LR64-R synchronous timing, transmit and receive

CTUN

Internal tuning capacitor in

SO8(5)

f = 13.56 MHz

24.8

27.5

30.2

VBACK

Backscattered level as defined

by ISO test

ISO10373-7

VMIN

Minimum operating voltage

between AC0 and AC1(6)

Inventory and Read operations

1.9

2.3

Vpeak

Write operations

2.3

2.6

Vpeak

TA = –40 to 85 °C.

All timing measurements were performed between 0 °C and 50 °C on a reference antenna with the following

characteristics:

External size: 75 mm x 48 mm

Number of turns: 5

Width of conductor: 0.5 mm

Space between 2 conductors: 0.3 mm

Value of the tuning capacitor in SO8: 27.5 pF (M24LR64-R)

Value of the coil: 5 µH

Tuning frequency: 13.56 MHz.

Characterized only, not 100% tested

15% (or more) carrier modulation index offers a better signal/noise ratio and therefore a wider operating range with a better

noise immunity

Characterised only, at room temperature only, measured at VAC0-AC1 = 0.5 V peak.

Characterized only, at room temperature only.

Table 105. RF characteristics(1) (2) (continued)

Symbol

Parameter

Condition

Min.

Typ.

Max.

Unit

Table 106. Operating conditions

Symbol

Parameter

Min.

Max.

Unit

Ambient operating temperature

–40

°C

AI06680

tRFF

tRFR

tRFSBL

tMAX

tMIN CD

fCC

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