The TDA5210A3 is a single chip ASK/FSK receiver for the frequency bands 315 MHz, 433 MHz, 868 MHz and 915 MHz. It is part of Infineon Technologies' receiver family and is designed for use in various wireless applications. This receiver is known for its high sensitivity, low power consumption, and robust performance in noisy environments.

Applications

• Remote Keyless Entry (RKE) systems
• Tire Pressure Monitoring Systems (TPMS)
• Alarm systems
• Garage door openers
• Wireless sensor networks
• Home automation systems

Features

• Single chip ASK/FSK receiver
• Frequency bands: 315 MHz, 433 MHz, 868 MHz, 915 MHz
• High sensitivity: down to -114 dBm
• Low power consumption: 7.2 mA in receive mode
• Data rate: up to 40 kbit/s
• Supply voltage: 3.0 V to 5.5 V
• Automatic Gain Control (AGC)
• RSSI (Received Signal Strength Indicator) output
• Wake-up timer

Benefits

• Increased range and reliability due to high sensitivity.
• Extended battery life due to low power consumption, crucial for battery-operated devices.
• Robust communication in noisy environments due to AGC and optimized receiver architecture.
• Reduced system cost due to the single-chip integration.
• Flexible design due to programmable data rate and frequency bands.
• Easy integration with microcontrollers using the RSSI output and wake-up timer.

Additional Details

The TDA5210A3 employs a super-heterodyne receiver architecture. It includes an integrated LNA (Low Noise Amplifier), mixer, IF (Intermediate Frequency) filter, and demodulator. The RSSI output provides information about the received signal strength, which can be used for adaptive threshold control or for detecting signal presence. The wake-up timer allows the receiver to periodically wake up and check for a signal, further reducing power consumption. The device is available in a small TSSOP20 package, making it suitable for space-constrained applications.