U2270B-MFPY Atmel, U2270B-MFPY Datasheet - Page 10
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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
3.8
4. Applications
10
Function Table
U2270B
To achieve the system performance, consider the power-supply environment and the mag-
netic-coupling situation.
The selection of the appropriate power-supply operation mode depends on the quality of supply
voltage. If an unregulated supply voltage in the range of V = 7V to 16V is available, the internal
power supply of the U2270B can be used. In this case, standby mode can be used and an exter-
nal low-current microcontroller can be supplied.
If a 5V supply rail is available, it can be used to power the U2270B. In this case, check that the
voltage is noise-free. An external power transistor is not necessary.
The application also depends on the magnetic-coupling situation. The coupling factor mainly
depends on the transmission distance and the antenna coils. The following table lists the appro-
priate application for a given coupling factor. The magnetic coupling factor can be determined
using Atmel
Table 4-1.
The maximum transmission distance is also influenced by the accuracy of the antenna’s reso-
nance. Therefore, the recommendations given above are proposals only. A good compromise
for the resonance accuracy of the antenna is a value in the range of f
details concerning the adequate application and the antenna design is provided in Section
“Antenna Design Hints”.
High
Low
High
High
CFE
Low
Low
OE
Magnetic Coupling Factor
®
’s test transponder coil.
Magnetic Coupling
k > 0.5%
k > 0.3%
k > 3%
k > 1%
Disabled
Enabled
Output
High
High
Low
Low
MS
STANDBY
COIL1
High
Low
High
Low
Appropriate Application
plus fine frequency tuning
plus frequency altering
Free-running oscillator
Diode feedback
Diode feedback
Diode feedback
res
= 125 kHz ± 3%. Further
Standby mode
U2270B
COIL2
Active
4684E–RFID–02/08
High
High