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| 型號(hào)： | MFRC50001T |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Highly integrated ISO-IEC 14443 A reader IC |
| 封裝： | MFRC50001T/0FE<SOT287-1 (SO32)|<<http://www.nxp.com/packages/SOT287-1.html<1<week 15, 2005,; |
| 文件頁數(shù)： | 93/110頁 |
| 文件大?。?/td> | 841K |
| 代理商： | MFRC50001T |
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MFRC500_33
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.3 — 15 March 2010
048033
93 of 110
NXP Semiconductors
MFRC500
Highly Integrated ISO/IEC 14443 A Reader IC
15.1.2.4
Antenna coil
The precise calculation of the antenna coil’s inductance is not practicable but the
inductance can be estimated using
Equation 10
. We recommend designing an antenna
that is either circular or rectangular.
(10)
l
1
= length of one turn of the conductor loop
D
1
= diameter of the wire or width of the PCB conductor, respectively
K = antenna shape factor (K = 1.07 for circular antennas and K = 1.47 for square
antennas)
N
1
= number of turns
ln = natural logarithm function
The values of the antenna inductance, resistance, and capacitance at 13.56 MHz depend
on various parameters such as:
antenna construction (type of PCB)
thickness of conductor
distance between the windings
shielding layer
metal or ferrite in the near environment
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
Ref. 1
and
MIFARE (14443 A) 13.56 MHz RFID Proximity
Antennas
Ref. 2
for details.
15.2 Test signals
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
Section 9.11 on page 33
.
In addition, the MFRC500 enables users to select between:
internal analog signals for measurement on pin AUX
internal digital signals for observation on pin MFOUT (based on register selections)
These measurements can be helpful during the design-in phase to optimize the receiver’s
behavior, or for test purposes.
L
1
nH
[
]
2
=
I
1
cm
[
]
I
1
D
1
------
ln
K
–
N
1
1.8
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| MFRC50001T/0FE,112 | 功能描述:RFID應(yīng)答器 MIFARE READER RoHS:否 制造商:Murata 存儲(chǔ)容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
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| MFRC52201HN1 | 功能描述:RFID應(yīng)答器 CL READER IC’S RoHS:否 制造商:Murata 存儲(chǔ)容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
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