U2270B-MFPY Atmel, U2270B-MFPY Datasheet - Page 6

• 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

Table 3-1.
3.3
6
Operation Mode
One-rail operation
Two-rail operation
Battery-voltage operation
Oscillator (Osc)
U2270B
Characteristics of the Various Operation Modes
Figure 3-4.
The frequency of the on-chip oscillator is controlled by a current fed into the R
grated compensation circuit ensures a wide temperature range and a supply-voltage–
independent frequency which is selected by a fixed resistor between R
For 125 kHz, a resistor value of 110 k is defined. For other frequencies, use the following
formula:
This input can be used to adjust the frequency close to the resonance of the antenna. For more
details see Section
Figure 3-5.
R
External Components Required
1 voltage regulator
1 capacitor
2 voltage regulators
2 capacitors
1 transistor
2 capacitors
Optional, for load dump protection:
1 resistor
1 capacitor
t
k
=
-------------------- - 5
f
0
14375
kHz
Battery Operation
Equivalent Circuit of Pin R
–
“Applications” on page
DV
S
V
EXT
Supply-voltage Range
2 k
F
V
S
6V to 16V
10.
5V ±10%
5V ±10%
7V to 8V
V
Batt
Standby
V
R
S
F
7V to 16V
Voltage Swing
R
Driver Output
f
6V to 7V
4V
4V
F
(pin 15) and V
F
Standby Mode
input. An inte-
4684E–RFID–02/08
Available
Yes
No
No
S
(pin 14).