U2270B-MFPY Atmel, U2270B-MFPY Datasheet - Page 13

• 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

4.3
4684E–RFID–02/08
Application 3
This application is comparable to
higher antenna resonance tolerances and/or higher communication distances. This application
is preferred if the detecting microcontroller is close to the U2270B, as an additional microcontrol-
ler signal controls the adequate operating frequency.
Figure 4-3.
Note:
Antenna
100
1.5 mH
180 pF
100 k
75 k
1 nF
1N4148
BC846
Application examples have not been examined for series production or reliability, and no worst
case scenarios have been developed. Customers who adapt any of these proposals must carry
out their own testing and be convinced that no negative consequences arise from the proposals.
1N4148
82
Application Circuit 3
4
470 k
1.5 k
1.5 nF
4.7 k
43 k
4.7 nF
C
IN
68 k
C
HP
“Application 2”
RF
COIL2
COIL1
Input
HIPASS
V
S
DGND
V
EXT
U2270B
DV
GND
but alters the operating frequency. This allows
S
Standby
Output
V
CFE
Batt
MS
OE
V
DD
controller
Micro-
V
SS
+
22 µF
U2270B
47 nF
GND
5V
13