Read / Write Base Station IC
U2270B
Read / Write Base Station IC
Description
IC for IDIC® *) read-write base stations The U2270B is a bipolar integra...
Description
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 immobilizer 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 automotivespecific 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 fosc 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....
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