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ATA5278 Datasheet, PDF (1/33 Pages) ATMEL Corporation – STAND-ALONE ANTENNA DRIVER | |||
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Features
⢠SPI for Microcontroller Connection with Up to 1 Mbit/s
⢠Internal Data Buffer for Timing-independent Data Transmission
⢠Programmable Driver Current Regulation
⢠One-chip Antenna Driver Stage for 1 A Peak Current
⢠LF Baud Rates Between 1 kbaud and 4 kbaud
⢠Quick Start Control (QSC) for Fast Oscillation Build-up and Decay Timing
⢠Integrated Oscillator for Ceramic Resonators
⢠Power Supply Range from 7.5 V to 16 V Direct Battery Input
(Up to 28 V With Limited Function Range)
⢠Amplitude Shift Keying (ASK) Modulation
⢠Phase Shift Keying (PSK) Modulation
⢠Carrier Frequency Range from 100 kHz to 150 kHz
⢠Operational Temperature -40°C to +105°C
⢠EMI and ESD According to Automotive Requirements
⢠Highly Integrated â Less External Components Required
Applications
⢠Hands-free Car Access (Passive Entry/Go)
⢠Tire Pressure Measurement
⢠Home Access Control
⢠Care Watch Systems
Benefits
⢠Diagnosis Function and Overtemperature Protection
⢠Load Dump Protection Up to 45 V for 12 V Boards
⢠Power-down Mode for Minimum Power Consumption
Electrostatic sensitive device.
Observe precautions for handling.
Stand-alone
Antenna Driver
ATA5278
Preliminary
Description
The ATA5278 device is an integrated BCDMOS antenna driver IC dedicated as a
transmitter for Passive Entry/Go (PEG) car applications and for other hands-free
access control applications.
It includes the full functionality of generating a magnetic LF field in conjunction with an
antenna coil to transmit data to a receiver in a key fob, card or transponder. A micro-
controller can access the chip via a bi-directional serial interface.
Rev. 4832AâRKEâ10/04
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