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| 型號(hào)： | CLRC63201T |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Multiple protocol contactless reader IC (MIFARE-I-CODE1) |
| 封裝： | CLRC63201T/0FE<SOT287-1 (SO32)|<<http://www.nxp.com/packages/SOT287-1.html<1<week 5, 2005,; |
| 文件頁(yè)數(shù)： | 12/126頁(yè) |
| 文件大?。?/td> | 719K |
| 代理商： | CLRC63201T |
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CLRC632_35
NXP B.V. 2009. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.5 — 10 November 2009
073935
109 of 126
NXP Semiconductors
CLRC632
Multiple protocol contactless reader IC (MIFARE/I-CODE1)
It is recommended to use the internally generated VMID potential as the input potential for
pin RX. This VMID DC voltage level has to be coupled to pin RX using resistor (R2). To
provide a stable DC reference voltage, a capacitor (C4) must be connected between
VMID and ground.
The AC voltage divider of R1 + C3 and R2 has to be designed taking in to account the AC
voltage limits on pin RX. Depending on the antenna coil design and the impedance,
matching the voltage at the antenna coil will differ. Therefore the recommended way to
design the receiver circuit is to use the given values for R1, R2, and C3; refer to
Application note;
MIFARE (14443 A) 13.56 MHz RFID Proximity Antennas Ref. 2. The
voltage on pin RX can be altered by varying R1 within the given limits.
Remark: R2 is AC connected to ground using C4.
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)
l1 = length of one turn of the conductor loop
D1 = 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)
N1 = 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 a
reasonable 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.
L
1 nH
[]
2
=
I
1 cm
[]
I
1
D
1
------
ln
K
–
N
1
1.8
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相關(guān)代理商/技術(shù)參數(shù) |
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| CLRC63201T/0FE | 制造商:NXP Semiconductors 功能描述: |
| CLRC63201T/0FE,112 | 功能描述:RFID應(yīng)答器 I.CODE HS 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 |
| CLRC63201T/0FE,118 | 制造商:NXP Semiconductors 功能描述:Interface Misc |
| CLRC63201T/0FE112 | 制造商:NXP Semiconductors 功能描述:CNTCLESS RC 5V ISO14443 + ISO15693 |
| CLRC663 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Contactless reader IC |
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