The Atmel ATA5279C is a single-chip ASK/FSK receiver optimized for automotive remote keyless entry (RKE) and tire pressure monitoring systems (TPMS) applications. It operates in the 300-930 MHz frequency range, providing a flexible and cost-effective solution for wireless communication.

Applications:

• Remote Keyless Entry (RKE) systems in automobiles
• Tire Pressure Monitoring Systems (TPMS)
• General-purpose wireless remote control
• Alarm systems
• Garage door openers

Features:

• Single-chip ASK/FSK receiver
• Frequency range: 300-930 MHz
• High sensitivity for extended range
• Low power consumption for battery-powered applications
• Programmable data rate
• Automatic Gain Control (AGC)
• Wake-up timer
• RSSI (Received Signal Strength Indicator) output
• Digital signal processing for improved performance
• Small package size

Benefits:

• Improved Security: The ATA5279C enables secure wireless communication for RKE systems, protecting vehicles from unauthorized access.
• Extended Range: High sensitivity ensures reliable operation even at longer distances.
• Long Battery Life: Low power consumption extends the operating life of battery-powered devices, reducing maintenance requirements.
• Flexibility: Programmable data rate and other parameters allow customization for specific application needs.
• Simplified Design: Integrated features reduce the need for external components, simplifying system design and lowering costs.
• Reliable Performance: Digital signal processing enhances performance in noisy environments.

Additional Details:

The ATA5279C operates with a supply voltage typically in the range of 2.4V to 5.5V. It supports both ASK (Amplitude Shift Keying) and FSK (Frequency Shift Keying) modulation schemes, providing flexibility for different communication protocols. The RSSI output allows for signal strength monitoring, which can be used for adaptive power control or interference detection. The wake-up timer enables periodic activation of the receiver, further reducing power consumption. It is typically available in a small QFN package.