Data Sheet

MFRC522 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 3.9 — 27 April 2016
112139 75 of 95
NXP Semiconductors
MFRC522
Standard performance MIFARE and NTAG frontend
13. Thermal characteristics
14. Characteristics
Table 152. Thermal characteristics
Symbol Parameter Conditions Package Typ Unit
R
th(j-a)
thermal resistance from junction to
ambient
in still air with exposed pin soldered on a
4 layer JEDEC PCB
HVQFN32 40 K/W
Table 153. Characteristics
Symbol Parameter Conditions Min Typ Max Unit
Input characteristics
Pins EA, I2C and NRSTPD
I
LI
input leakage current 1-+1 A
V
IH
HIGH-level input voltage 0.7V
DD(PVDD)
-- V
V
IL
LOW-level input voltage - - 0.3V
DD(PVDD)
V
Pin MFIN
I
LI
input leakage current 1-+1 A
V
IH
HIGH-level input voltage 0.7V
DD(SVDD)
-- V
V
IL
LOW-level input voltage - - 0.3V
DD(SVDD)
V
Pin SDA
I
LI
input leakage current 1-+1 A
V
IH
HIGH-level input voltage 0.7V
DD(PVDD)
-- V
V
IL
LOW-level input voltage - - 0.3V
DD(PVDD)
V
Pin RX
[1]
V
i
input voltage 1-V
DDA
+1 V
C
i
input capacitance V
DDA
= 3 V; receiver active;
V
RX(p-p)
= 1V; 1.5V (DC)
offset
-10- pF
R
i
input resistance V
DDA
= 3 V; receiver active;
V
RX(p-p)
=1V; 1.5V (DC)
offset
- 350 - 
Input voltage range; see Figure 24
V
i(p-p)(min)
minimum peak-to-peak input
voltage
Manchester encoded;
V
DDA
=3V
- 100 - mV
V
i(p-p)(max)
maximum peak-to-peak input
voltage
Manchester encoded;
V
DDA
=3V
-4- V
Input sensitivity; see Figure 24
V
mod
modulation voltage minimum Manchester
encoded; V
DDA
=3V;
RxGain[2:0] = 111b (48 dB)
-5- mV
Pin OSCIN
I
LI
input leakage current 1-+1 A
V
IH
HIGH-level input voltage 0.7V
DDA
-- V
V
IL
LOW-level input voltage - - 0.3V
DDA
V