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ATA5277 Datasheet

  • ATA5277

  • STAND-ALONE ANTENNA DRIVER

  • 20頁

  • ATMEL   ATMEL

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Features
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Programmable Driver Current Regulation
Antenna Driver Stage for 1 A Peak Current
LF Baudrates between 1 kbaud to 8 kbaud
Integrated Oscillator for Ceramic Resonators
Two Inputs for Push-button Switches
Bi-directional Single-wire Interface
Diagnosis Function and Overtemperature Protection
Quick Start Control (QSC) for Fast Oscillation Build-up and Decay Timing
Operation Temperature -40擄C to +85擄C
Carrier Frequency Range from 100 kHz to 150 kHz
Amplitude Shift Keying (ASK) Modulation
Phase Shift Keying (PSK) Modulation
Power Supply Range 7 V to 16 V Direct Battery Input (6 V and 28 V with Limited
Function Range)
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EMI and ESD According to Automotive Requirements
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Highly Integrated 鈥?Less External Components Required
Stand-alone
Antenna Driver
ATA5277
Preliminary
Applications
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Car Access
Benefits
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Dedicated for Decentralized Systems
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Constant Magnetic Field Strength
Electrostatic sensitive device.
Observe precautions for handling.
Description
The circuit is an integrated BCDMOS antenna driver IC dedicated as a transmitter for
Passive Entry/Go (PEG) car applications and for other handsfree access control
applications.
It includes the full functionality to generate a magnetic LF field in conjunction with an
antenna coil to transmit data to a receiver in a key fob, card or transponder. The trans-
mission can be controlled via an one wire I/O interface (DIO) by an external control
unit.
Rev. 4669B鈥揜KE鈥?0/03

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