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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 amplifies 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 he 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/transceiver,a battery, temperature- and pressure sensor, it is possible to design a complete Tire Pressure Monitoring system (TPM).
ATA5283 Maximum Ratings
Parameter
Symbol
Value
Unit
Power supply
VDD
-0.3 to +6.5
V
Input voltage (except coil inputs)
VIN
VSS - 0.3 < VIN < VDD + 0.3
V
Input current coil
ICI
±10
mA
Input voltage coil
VCI
VDD - 3.5 < VCI < VDD + 3.5
V
ESD protection (human body)
VESD
4
kV
Operating temperature range
Tamb
-40 to +125
Withstanding 175°C
tTEMP
30
min.
Storage temperature range
Tstg
-40 to +150
Soldering temperature
Tsld
260
ATA5283 Features
• Wake-up Function for a Microcontroller with Preamble Detection • 1 mVrms Sensitivity • 1 A Standby Current • Power Supply: 2 V to 3.8 V • Baud Rate: up to 4 kbps (ASK Modulation) • Operation Temperature: up to 125°C • Withstands +175°C • Few External Components