ST25TV02K datasheet(73/90 Pages) STMICROELECTRONICS

73 / 90 page

Symbol

Parameter

Condition(1)(2)

Min

Typ

Max

Unit

tPWD_FAIL (5)

Waiting time in case of wrong password

5.12

CTUN_

23.5pF

Internal tuning capacitor in SO8 (6)

f = 13.56 MHz

21.4

24.6

CTUN_

99 pF

Internal tuning capacitor in SO8(6)

f = 13.56 MHz

92.7

99.7

106.7

VBACK

Backscattered level as defined by ISO test

VMIN_1 (3)

RF input voltage amplitude between AC0 and AC1, VAC0-VAC1

peak to peak(3)

Inventory and Read

operations

4.8

Vpkpk

Write operations

Vpkpk

tRF_OFF

RF OFF time

Chip reset

Rclosed

Resistance of closed Tamper Detect Loop

TD0-TD1

Ropen

Resistance of open Tamper Detect Loop

TD0-TD1

MΩ

1. TA =–40 to 85 °C. Characterized only.

2. All timing characterizations were performed on a reference antenna with the following characteristics:

•

ISO antenna class1

•

Tuning frequency = 13.7 MHz

3. Characterized on bench.

4. For VCD request coded in 1 out of 4 and ST25TV02K/512 response in high data rate, single sub carrier.

5. Applies from VCD request EOF to VICC response SOF.

6. The tuning capacitance value is measured with ST characterization equipment at chip Power On Reset.

This value is used as reference for antenna design. Minimum and Maximum values come from correlation

with industrial tester limits. For inlay implementation, the antenna design applied for LRI2K can be re-used

as-is for ST25TV02K. The typical value for the ST25TV02K is equivalent to what was specified in the

LRI2K data-sheet. This change is related to a different measurement methodology between LRI2K and

ST25TV02K.

Figure 29. ASK modulated signal

tRFF

tRFR

tRFSBL

tM IN CD

fCC

ST25TV02K ST25TV512

RF electrical parameters

DS12074 - Rev 11

page 73/90

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