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ATA5275 Datasheet

  • ATA5275

  • 125 kHz TRANSMITTER IC FOR TPM

  • 16頁

  • ATMEL   ATMEL

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Features
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Antenna Driver Stage with Adjustable Antenna Peak Current for up to 1.5 A
Frequency Tuning Range from 100 kHz to 150 kHz
Automatic Antenna Peak Current Regulation
Self-tuning Oscillator for Antenna Resonant Frequency Adaption
Capable of Driving a High-Q Antenna
Integrated 5 V Regulator for External Load up to 10 mA
Bi-directional Single Wire Interface for Microcontroller or ECU
LF Baud Rates up to 4 kbaud and Amplitude Shift Keying (ASK) Modulation
Low Power Standby Mode < 50 碌A(chǔ)
Antenna Driver Diagnosis: Peak Current, Antenna Frequency and Battery Voltage
Monitoring
Power Supply Range 8 V to 24 V Direct Battery Input
Load Dump Protection up to 45 V for 12 V Boards
Operation at Temperature -40擄C to +105擄C
EMI and ESD According to Automotive Requirements
Highly Integrated, Fewer External Components Required
Driver Overcurrent Protection
Overtemperature Protection
125 kHz
Transmitter IC
for TPM
ATA5275
Preliminary
Applications
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Tire Pressure Measurement (TPM)
Benefits
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Self Tuning Capability to Antenna Resonance Frequency
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Adjustable Antenna Peak Current Value
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Highest Integration Level for Embedded Automotive Systems
Electrostatic sensitive device.
Observe precautions for handling.
Description
The ATA5275 is an integrated 1.5 A peak current BCDMOS antenna driver IC dedi-
cated as a 125 kHz wake-up channel transmitter for TPM applications.
It includes the full functionality to generate a magnetic LF field in conjunction with an
antenna coil to transmit data and power to a receiver. The transmission can be con-
trolled via a one wire I/O-interface by an external unit.
The smart power IC is delivered in a QFN20 power package with heat slug.
Rev. 4739C鈥揂UTO鈥?2/05

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