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ST25R95 Datasheet(PDF) 48 Page - STMicroelectronics

Part # ST25R95
Description  Near field communication transceiver
PDF  61 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25R95 Datasheet(HTML) 48 Page - STMicroelectronics

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Table 51. Field detection characteristics
Symbol
Parameter
Min.
Typ.
Max.
Unit
-
Level of detection (2)
0.5
-
8
A/m
1. Parameter measured using recommended output matching network for ISO/IEC 14443 communication.
Table 52. Reader characteristics
Symbol
Parameter
Min.
Typ.
Max.
Unit
fC
Frequency of operating field (carrier frequency)
13.553
13.56
13. 567
MHz
MI Carrier
Carrier modulation index
•
ISO/IEC 14443-A (1)
•
ISO/IEC 14443-B
•
FeliCa
•
ISO/IEC 15693 (10% modulation)(2)
•
ISO/IEC 15693 (100% modulation)
-
8
8
10
80
-
100
14
14
30
100
%
Transmitter specifications (VPS_TX = 2.7 to 3.3 V)
-
ZOUT differential impedance between TX1 and TX2(1)
-
27
-
Ω
-
Output power for 3V operation on pin VPS_TX (2)
-
55
-
mW
Transmitter specifications (VPS_TX = 4.5 to 5.5 V)
-
ZOUT differential impedance between TX1 and TX2(1)
-
16
-
Ω
-
Output power for 5V operation on pin VPS_TX (1) (2)
-
230
-
mW
Receiver specifications
-
Small signal differential input resistance (Rx1/Rx2)(1)
-
100
-
kΩ
VRx1-Rx2
Differential input voltage between pins RX1 and RX2 (3)
-
-
18
V
-
Small signal differential input capacitance (Cx1/Cx2)(1)
-
22
-
pF
-
Sensitivity (106 Kbps data rate) (4)
-
8
-
mV
1. Maximum values based on design simulation and/or characterization results, and not tested in production.
2. Parameter measured on samples using recommended output matching network. (Z load is 27 Ω and 0°.)
3. This voltage can be limited by adding a damping resistor in parallel of the antenna or between ST_R0 and Ground.
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 ST25R95.
ST25R95
RF characteristics
DS12807 - Rev 4
page 48/61



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