OM25180FDKM datasheet(73/149 Pages) NXP

Part #	OM25180FDKM

Description	High-performance multi-protocol full NFC Forum-compliant frontend

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PN5180

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Product data sheet

COMPANY PUBLIC

Rev. 3.0 — 7 October 2016

240930

73 of 149

NXP Semiconductors

PN5180

High-performance multi-protocol full NFC Forum-compliant frontend

The I/Q-Mixer mixes the differential input RF-signal down to the baseband. The mixer has

a band with of 2 MHz.

The down mixed differential RX input signals are passed to the BBA and band-pass

filtered. In order to consider all the various protocols (Type A/B, FeliCa), the high-pass

cut-off frequency of BBA can be configured between 45 kHz and 250 kHz in 4 different

steps. The low-pass cut-off frequency is above 2 MHz.

This band-passed signal is then further amplified with a gain factor which is configurable

between 30 dB and 60 dB. The baseband amplifier (BBA)/ADC I- and Q- channel can be

enabled separately. This is required for ADC-based CardMode functionality as only the

I-channel is used in this case.

The gain and high pass corner frequency of the BBA are not independent from each

other:

Table 62.

Gain setting

HPCF setting HPCF (kHz)

LPCF (MHz)

Gain (sB20)

Band width

(MHz)

Gain3

0

39

3.1

60

3.1

1

78

3.2

59

3.1

2144

3.5

58

3.3

3260

4.1

56

3.8

Gain2

0

42

3.1

51

3.1

1

82

3.3

51

3.2

2150

3.7

49

3.5

3271

4.3

47

4.0

Gain1

0

41

3.7

43

3.7

1

82

4.0

42

3.9

2151

4.5

41

4.3

3276

5.5

39

5.2

Gain0

0

42

3.8

35

3.8

1

84

4.1

34

4.0

2154

4.7

33

4.5

3281

5.7

31

5.4

Fig 38. PN5180 Receiver Block diagram

aaa-008644

RXP

VMID

AGC

BBA

MIX

CLK

I-CLK

Q-CLK

RXN

DATA

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OM25180FDKM Datasheet(PDF) 73 Page - NXP Semiconductors

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