U2270B
| Model | U2270B |
| Description | Read / Write Base Station IC |
| PDF file | Total 13 pages (File size: 148K) |
| Chip Manufacturer | TEMIC |
U2270B
Read / Write Base Station IC
Description
IC for IDIC
®
*)
read-write base stations
The U2270B is a bipolar integrated circuit for read-write
base stations in contactless identification and immo-
bilizer systems.
The IC incorporates the energy transfer circuit to supply
the transponder. It consists of an on-chip power supply, an
oscillator, and a coil driver optimized for automotive-
specific distances. It also includes all signal-processing
circuits which are necessary to form the small input signal
into a microcontroller-compatible signal.
The U2270B is well suitable to perform read operations
with e5530-GT and TK5530-PP transponders and also
performs read-write operations with TK5550-PP and
TK5560-PP transponders.
Features
D
D
D
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D
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Carrier frequency f
osc
100 KHz – 150 KHz
Typical data rate up to 5 Kbaud at 125 KHz
Suitable for Manchester and Bi-phase modulation
Power supply from the car battery or from
5-V regulated voltage
Optimized for car immobilizer applications
Tuning capability
Microcontroller-compatible interface
Low power consumption in standby mode
Power supply output for microcontroller
Applications
D
Car immobilizers
D
Animal identification
D
Access control
D
Process control
D
Further industrial applications
Case:
SO16 U2270B-FP
Transponder / TAG
Read / write base station
Transp.
IC
e5530
e5550
e5560
RF– Field
typ. 125 kHz
Osc
Carrier
enable
U2270B
NF read channel
Data
output
MCU
Unlock
System
TK5530-PP
e5530-GT
TK5550-PP
TK5560-PP
Figure 1.
*)
9300
IDIC
®
stands for
IDentification Integrated Circuit
and is a trademark of TEMIC.
1 (13)
TELEFUNKEN Semiconductors
Rev. A3, 13-Dec-96
