MFRC522 datasheet(83/109 Pages) NXP

83 / 109 page

112132

Product data sheet

Rev. 3.2 — 22 May 2007

83 of 109

NXP Semiconductors

MFRC522

Contactless Reader IC

20. Limiting values

21. Recommended operating conditions

[1]

Supply voltages below 3 V reduces the performance (e.g. the achievable operating distance).

[2]

AVDD, DVDD and TVDD shall always be on the same voltage level.

[3]

PVDD shall always be on the same or lower voltage level than DVDD.

22. Thermal characteristics

Table 155. Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).

Symbol

Parameter

Conditions

Min

Max

Unit

AVDD

Supply voltage

-0.5

+4.0

DVDD

PVDD

TVDD

SVDD

Vin

Input voltage

for all input-pins except

MFIN and Rx

PVSS -0.5 PVDD +0.5 V

Vin,MFIN

Input voltage

for MFIN pin only

PVSS-0.5 SVDD+0.5 V

Ptot

Total power dissipation per package

(VBUS and DVDD in short cut mode)

-200

Junction temperature range

100

°C

ESDH

ESD Susceptibility (Human Body model) 1500

Ω, 100 pF;

JESD22-A114-B

2000

ESDM

ESD Susceptibility (Machine model)

0.75

μH, 200 pF;

JESD22-A114-A

200

Table 156: Operating conditions

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Tamb

Ambient

Temperature

HVQFN32

-25

+85

°C

AVDD

DVDD

TVDD

Supply Voltage

AVSS =DVSS =PVSS=

TVS =0 V, PVDD ≤ AVDD =

DVDD =TVDD

[2]

2.5

3.3

3.6

PVDD

[3]

1.6

1.8

3.6

Table 157: Thermal characteristics

Symbol

Parameter

Conditions

Package

Typ

Unit

Rthj-a

Thermal resistance from

junction to ambient

In still air with exposed

pad soldered on a

4 layer Jedec PCB

HVQFN32 40

K/W

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