U2270B 데이터 시트보기 (PDF) - Temic Semiconductors

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U2270B

Read / Write Base Station IC

Temic Semiconductors 

Read / Write Base Station IC

U2270B

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 Carrier frequency fosc 100 KHz – 150 KHz

D Typical data rate up to 5 Kbaud at 125 KHz

D Suitable for Manchester and Bi-phase modulation

D Power supply from the car battery or from

5-V regulated voltage

D Optimized for car immobilizer applications

D Tuning capability

D Microcontroller-compatible interface

D Low power consumption in standby mode

D 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

U2270B

NF read channel

Carrier

enable

Data

output

MCU

Unlock

System

TK5530-PP

9300

e5530-GT

TK5550-PP

TK5560-PP

Figure 1.

*) IDIC® stands for IDentification Integrated Circuit and is a trademark of TEMIC.

TELEFUNKEN Semiconductors

Rev. A3, 13-Dec-96

1 (13)

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