U2270B Datasheet PDF - ATMEL

●Description

●The U2270B is an IC for IDIC® 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-spe cific distances. It also includes all signal-processing circuits which are necessary to transform the small input signal into a microcontroller-compatible signal.

●Features

●• Carrier Frequency fosc 100 kHz to 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 5V 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