MFRC50001T/0FE,112 NXP Semiconductors, MFRC50001T/0FE,112 Datasheet - Page 93

• Manufacturer Part Number: MFRC50001T/0FE,112
• Description: IC MIFARE READER 32-SOIC
• Manufacturer: NXP Semiconductors
• Series: MIFARE®r

Specifications of MFRC50001T/0FE,112

• Rf Type: Read Only
• Frequency: 13.56MHz
• Features: ISO14443-A, ISO14443-B, ISO15693
• Package / Case: 32-SOIC (0.300", 7.50mm Width)
• Product: RFID Readers
• Operating Temperature Range: - 25 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 568-2222-5; 935268039112; MFRC500; MFRC51T0FED

NXP Semiconductors
MFRC500_33
Product data sheet
PUBLIC
15.1.2.4 Antenna coil
15.2 Test signals
The precise calculation of the antenna coil’s inductance is not practicable but the
inductance can be estimated using
that is either circular or rectangular.
The values of the antenna inductance, resistance, and capacitance at 13.56 MHz depend
on various parameters such as:
Therefore a measurement of these parameters under real life conditions or at least a
rough measurement and a tuning procedure is highly recommended to guarantee
adequate performance. Refer to Application notes MICORE reader IC family; Directly
Matched Antenna Design
Antennas
The MFRC500 allows different kinds of signal measurements. These measurements can
be used to check the internally generated and received signals using the serial signal
switch as described in
In addition, the MFRC500 enables users to select between:
These measurements can be helpful during the design-in phase to optimize the receiver’s
behavior, or for test purposes.
L
•
•
•
•
•
•
•
•
•
•
•
•
1
[
nH
l
D
K = antenna shape factor (K = 1.07 for circular antennas and K = 1.47 for square
antennas)
N
ln = natural logarithm function
antenna construction (type of PCB)
thickness of conductor
distance between the windings
shielding layer
metal or ferrite in the near environment
internal analog signals for measurement on pin AUX
internal digital signals for observation on pin MFOUT (based on register selections)
1
1
1
= length of one turn of the conductor loop
]
= diameter of the wire or width of the PCB conductor, respectively
= number of turns
=
Ref. 2
2
⋅
I
1
[
All information provided in this document is subject to legal disclaimers.
cm
for details.
]
⋅
⎛
⎝
Rev. 3.3 — 15 March 2010
Section 9.11 on page
ln
〈
Ref. 1
----- -
D
I
1
1
〉
–
048033
K
and MIFARE (14443 A) 13.56 MHz RFID Proximity
⎞ N
⎠
Equation
1
1.8
Highly Integrated ISO/IEC 14443 A Reader IC
33.
10. We recommend designing an antenna
MFRC500
© NXP B.V. 2010. All rights reserved.
93 of 110
(10)