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 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
● 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
● Car immobilizers
● Animal identification
● Access control
● Process control
● Further industrial applications