at88rf256-12 ATMEL Corporation, at88rf256-12 Datasheet - Page 8

• Manufacturer Part Number: at88rf256-12
• Description: 125 Khz Rfid Transponder Chip
• Manufacturer: ATMEL Corporation

Absolute Maximum Ratings
Parametric Specifications
Unless otherwise noted, all specifications are over the temperature range of -40 ° C to +85 ° C.
Notes:
Transmit Test Circuit
8
Operating Temperature..........................-40°C to +85°C
Storage Temperature (without Bias)........-40°C to + 85°C
Maximum Power from RF Field...........................100 mW
Maximum Coil Input Voltage..................................24V
Maximum ESD Voltage (pins L1 and L2)...............2000V
Name
P
V
V
I
I
I
V
V
V
V
DV
C
L1-L2
CCR
CCW
COIL
COIL1
COIL2
CNF
MNF
CFF
MFF
L
RCV
1. Some parametric limits are design targets that may be refined on the basis of production history.
2. Coil voltages are measured with respect to the on chip ground, which is centered on the AC voltage from the coil.
3. Reference Transmit Test Circuit:
Peak-to-peak coil voltages would be double to those listed above.
+
-
AT88RF256-12
CNF: Carrier Near Field
MNF: Modulating Near Field
CFF: Carrier Far Field
MFF: Modulating Far Field
Min
135
1.6
2.7
5.0
4.0
1.0
R
+
-
R
Typ
150
150
2.2
3.0
7
AT88RF256-12
L1
L2
GND
Max
160
200
165
3.1
3.7
7.0
4.0
3.4
20
10
P-P
Units
mW
mA
µA
µA
pF
V
V
V
V
V
V
Test Waveform
*NOTICE:
VL1
VL2
Notes
Maximum Power Dissipation from L1/L2, Peak
Coil Voltage
Coil Voltage
Peak Clamp Current
During EEPROM Read, V
During EEPROM Write, V
10V Through 400Ω, Prior to Modulation
10V Through 400Ω, During Modulation
4.5V Through 5 kΩ, Prior to Modulation
4.5V Through 5 kΩ, During Modulation
Modulation Voltage Delta During Reception
Input Capacitance on L1/L2 at 5V, Not Tested
Stresses beyond those listed under
Maximum Ratings” may cause permanent
damage to the device. This is a stress rating only
and functional operation of the device at these or
any other conditions beyond those indicated in
the operational sections of this specification is
not implied. Exposure to absolute maximum
rating conditions for extended periods may affect
device reliability.
(2)
(2)
for ID Transmission
for EEPROM Writes and Reads
V
CNF,
V
L1/L2
L1/L2
CFF
= 3.0
= 2.2V
DV
(3)
(3)
(3)
(3)
RCV
“
Absolute
V
MNF,
V
MFF