ATA5283 ATMEL Corporation, ATA5283 Datasheet

ATA5283

Manufacturer Part Number

ATA5283

Description

Interface ic For 125 KHZ Wake-up Function

Manufacturer

ATMEL Corporation

Datasheet

1.ATA5283.pdf (13 pages)

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Features

•

Application

•

Description

The ATA5283 is a 125 kHz ultra-low power receiver used for the wake-up function of

Tire Pressure Monitoring (TPM) application. The sensitive input stage of the IC ampli-

fies and demodulates the carrier signal from the antenna coil to a digital output signal

for a microcontroller. During the standby mode the preamble detection unit monitors

the incoming signal and activates the wake-up output and the data output, if the IC

receives a proper 125 kHz carrier signal.

By combining the IC with an antenna coil, a microcontroller, an RF transmitter/trans-

ceiver, a battery, temperature- and pressure sensor, it is possible to design a

complete Tire Pressure Monitoring system (TPM).

Figure 1. Block Diagram

Wake-up Function for a Microcontroller with Preamble Detection

1 mV

1 µA Standby Current

Power Supply: 2 V to 4.2 V

Baud Rate: up to 4 kbps (ASK Manchester Modulation)

Operation Temperature: up to 125°C

Withstands +175°C

Few External Components

Tire Pressure Monitoring (TPM)

rms

Sensitivity

TST1

TST2

COIL

Vref

with AGC

Amplifier

Battery

Condi-

tioner

VDD

GND

Preamble

ATA5283

check

N_WAKEUP

N_DATA

RESET

Interface IC for

125 kHz

Wake-up

Function

ATA5283

Preliminary

Rev. 4598A–AUTO–04/03

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