U2270B-MFPY Atmel, U2270B-MFPY Datasheet - Page 9
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U2270B-MFPY
Manufacturer Part Number
U2270B-MFPY
Description
IC BASEREADER RFID 125KHZ 16SOIC
Manufacturer
Atmel
Series
U2270Br
Specifications of U2270B-MFPY
Rf Type
Read / Write
Frequency
125kHz
Features
Read/Write Base Station
Package / Case
16-SOIC (0.154", 3.90mm Width)
Current Consumption
4.5mA
Supply Voltage Range
4.5V To 6.3V
Rf Ic Case Style
SOIC
No. Of Pins
16
Filter Terminals
SMD
Ic Generic Number
2270
Operating Temperature Range
-40°C To +105°C
Rohs Compliant
Yes
Pin Count
16
Screening Level
Industrial
Package Type
SOIC
Operating Temperature Max
105°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
U2270B-MFPY
Manufacturer:
MICROCHIP
Quantity:
1 200
Part Number:
U2270B-MFPY
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
3.7
4684E–RFID–02/08
Driver (DRV)
The driver supplies the antenna coil with the appropriate energy. The circuit consists of two inde-
pendent output stages. These output stages can be operated in two different modes. In common
mode, the outputs of the stages are in phase; in this mode, the outputs can be interconnected to
achieve a high-current output capability. Using the differential mode, the output voltages are in
anti-phase; thus, the antenna coil is driven with a higher voltage. For a specific magnetic field,
the antenna coil impedance is higher for the differential mode. As a higher coil impedance
results in better system sensitivity, the differential mode should be preferred.
The CFE input is intended to be used for writing data into a read/write or a crypto transponder.
This is achieved by interrupting the RF field with short gaps. The various functions are controlled
by the inputs MS and CFE (see
is shown in
Figure 3-9.
Figure 3-10. Equivalent Circuit of Pin CFE
Figure 3-1 on page
Equivalent Circuit of Pin MS
4.
“Function Table” on page
CFE
MS
30 µA
30 µA
10). The equivalent circuit of the driver
U2270B
9