ATA5283

The Atmel ATA5283 is an ultra-low power ASK receiver operating at 125 kHz, primarily used for the wake-up function in Tire Pressure Monitoring (TPM) systems. It amplifies and demodulates carrier signals from an antenna coil to a digital output for a microcontroller.

Key features include a sensitivity of 1 mVrms and a standby current of just 1 µA, making it highly power-efficient. The device operates within a power supply range of 2V to 3.8V and supports baud rates up to 4 kbps with ASK modulation. It can function in environments with operating temperatures up to 125°C and withstands temperatures up to +175°C.

The ATA5283 integrates an Automatic Gain Control (AGC) amplifier to adapt to input signal variations, ranging from 1 mVrms to 1.1 Vrms. Its preamble detection unit monitors incoming signals in standby mode, activating wake-up and data outputs upon receiving a proper 125 kHz carrier signal. The IC is housed in a TSSOP8L package and requires few external components for a complete system design.

This receiver is ideal for applications requiring low power consumption and reliable wake-up functionality, such as TPM systems when combined with appropriate sensors and a microcontroller.