SRTAG2KL View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'SRTAG2KL' PDF : 51 Pages View PDF
RF electrical parameters
10 RF electrical parameters
SRTAG2KL
This section summarizes the operating and measurement conditions, and the DC and AC
characteristics of the device in RF mode.
The parameters in the DC and AC characteristics tables that follow are derived from tests
performed under the Measurement Conditions summarized in the relevant tables.
Designers should check that the operating conditions in their circuit match the measurement
conditions when relying on the quoted parameters.
Table 56. Default operating conditions
Symbol
Parameter
Min.
Max.
Unit
TA
Ambient operating temperature
–40
85
°C
Table 57. RF characteristics (1)
Symbol
Parameter
Condition
Min
Typ
Max Unit
fC
H_ISO
External RF signal frequency
Operating field according to ISO
H_Extended
Operating field in extended
temperature range
Hmin
Field detect, Set-up field(1)
MICARRIER 100% carrier modulation index
t1
Pause A length
t2
Pause A low time
t3
Pause A rise time
t4
Pause A rise time section
tMIN CD
Minimum time from carrier
generation to first data
TA = 0 °C to 50 °C
TA = -40 °C to 85 °C
TA = -40 °C to 85 °C
MI=(A-B)/(A+B)
-
-
-
-
From H-field min
13.553
1500
100
-
90
28/fC
7/fC
1.5xt4
0
-
13.56
-
13.567 MHz
7500 mA/m
-
7500 mA/m
50
- mA/m
-
100
%
-
40.5/fC µs
-
t1
µs
-
16/fC µs
-
6/fC
µs
-
5
ms
Wt
CTUN /5 (3)
tRF_OFF
RF write time (including internal
Verify) for one page
Internal tuning capacitor(4)
RF OFF time
-
fC = 13.56 MHz
Chip reset
-
4.468(2)
-
ms
45
50
55
pF
-
-
0.1
ms
1. All timing characterizations were performed on a reference antenna with the following characteristics:
External size: 75 mm x 48 mm
Number of turns: 4
Width of conductor: 0.5 mm
Space between two conductors: 0.5 mm
Value of the tuning capacitor: 50 pF (SRTAG2KL)
Value of the coil: 2.5 µH
Tuning frequency: 14.2 MHz.
2. Time between command EOF and Response SOF when Updating NDEF message Length
3. See /5 = 50 pF.
4. Characterized only, at room temperature only, measured at VAC0-VAC1 = 2 V peak to peak at 13.56 MHz.
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DocID026583 Rev 2
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