TK5551 ATMEL Corporation, TK5551 Datasheet - Page 9

• Manufacturer Part Number: TK5551
• Description: Standard Read/write Id Transponder With Anti-collision
• Manufacturer: ATMEL Corporation

12. Application
Figure 12-1. Complete Transponder System with the Read/Write Base Station IC U2270B
4709F–RFID–06/06
C31
5V
470 kΩ
47 nF
1.5 nF
Transponder
4.7 kΩ
TK5551
1N4148
1.35 mH
e5551
22 µF
680 pF
1.2 nF
R
DV
Input
COIL2
COIL1
V
DGND
Batt
S
Read/write
V
circuit
EXT
U2270B
Standby
f
res
Output
GND
Gain
CFE
= 1/ (2π√LC) = 125 kHz
V
MS
OE
RF
S
100 nF
110 kΩ
I/O
I/O
I/O
I/O
I/O
Microcontroller
V
V
SS
osc OUT
DD
5V
osc IN
TK5551
9