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U2270B

Read / Write Base Station IC

Description

IC for IDIC

廬

*)

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

D

D

D

D

D

D

Carrier frequency f

osc

100 KHz 鈥?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鈥?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

廬

stands for

IDentification Integrated Circuit

and is a trademark of TEMIC.

1 (13)

TELEFUNKEN Semiconductors

Rev. A3, 13-Dec-96

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• U2270B
  英文版
  Read / Write Base Station IC
  TEMIC
  U2270B
• U2270B
  英文版
  Read / Write Base Station IC
  TEMIC [TEM...
  U2270B

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