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ATA5278 Datasheet

  • ATA5278

  • STAND-ALONE ANTENNA DRIVER

  • 33頁(yè)

  • ATMEL   ATMEL

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Features
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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擄C to +105擄C
EMI and ESD According to Automotive Requirements
Highly Integrated 鈥?Less External Components Required
Stand-alone
Antenna Driver
ATA5278
Applications
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Hands-free Car Access (Passive Entry/Go)
Tire Pressure Measurement
Home Access Control
Care Watch Systems
Preliminary
Benefits
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Diagnosis Function and Overtemperature Protection
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Load Dump Protection Up to 45 V for 12 V Boards
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Power-down Mode for Minimum Power Consumption
Electrostatic sensitive device.
Observe precautions for handling.
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. 4832A鈥揜KE鈥?0/04

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