STRFNFCA datasheet(53/74 Pages) STMICROELECTRONICS

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STRFNFCA

Electrical characteristics

Doc ID 023077 Rev 10

53/74

2. Parameter measured on samples using recommended output matching network. (Z load is

27 Ohm and 0°.)

Table 44.

Field detection characteristics

Symbol

Parameter

Min.

Typ.

Max.

Unit

Level of detection (1)

Parameter measured using recommended output matching network for ISO/IEC 14443 communication.

0.5

A/m

Table 45.

Reader characteristics

Symbol

Parameter

Min.

Typ.

Max.

Unit

Frequency of operating field (carrier frequency)

13.553

13.56

13. 567

MHz

MI Carrier

Carrier modulation index(1)

ISO/IEC 14443-A

ISO/IEC 14443-B

ISO/IEC 18092

ISO/IEC 15693 (10% modulation)(2)

ISO/IEC 15693 (100% modulation)

Maximum values based on design simulation and/or characterization results, and not tested in production.

100

Transmitter specifications (VPS_TX = 2.7 to 3.3 V)

ZOUT differential impedance between TX1 and

TX2(1)

Output power for 3V operation on pin VPS_TX (1)(2)

Parameter measured on samples using recommended output matching network. (Z load is 27

Ω and 0°.)

Transmitter specifications (VPS_TX = 4.5 to 5.5 V)

ZOUT differential impedance between TX1 and

TX2(1)

Output power for 5V operation on pin VPS_TX (1) (2)

230

Receiver specifications

Small signal differential input resistance

(Rx1/Rx2)(1)

100

VRx1-Rx2

Differential input voltage between pins RX1 and RX2(3)

This voltage can be limited by adding a damping resistor in parallel of the antenna or between ST_R0 and

Ground.

Small signal differential input capacitance

(Cx1/Cx2)(1)

Sensitivity (106 Kbps data rate)(4)

Based on ISO/IEC 10373-6 protocol measurement. The reader sensitivity corresponds to the load

modulation value of the REQ reply sent by an ISO reference card when decoded by the STRFNFCA.

8mV

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