TDA5231

Overview

The TDA523x is a family of universal, highly sensitive, low-power single-chip ASK/FSK superheterodyne image-reject-receivers for Manchester-coded data signals in the ISM bands between 302..320 MHz, 433..450 MHz and 865..870 MHz. The chips include fully-integrated digital baseband data processing and produce clean data output via SPI, thus significantly reducing the load on the host processor and standby power consumption. The TDA523x family of chips offers a high level of integration and needs only few external components for application deployment.

Key Features

• Fully integrated ASK/FSK RF Data Receiver with data FIFO and SPI host interface
• High input sensitivity: e.g. typically -108dBm at 2kbit data rate
• Autonomous wake-up and Self-Polling features allow different modulation for wake-up and data
• Two parallel parameter sets for scanning and receiving from different sources
• Reduces significantly host processing power, system standby power consumption
• Fully integrated Multichannel PLL Synthesizer support up to 17 sub-channels
• Image Reject mixer prevents interferences on mirror frequency
• IF Filter Multiplexer allows IF bandwidth switching
• IF-Limiting Amplifier with RSSI-Output accessible via dedicated pin or register
• Data Framer with versatile Frame Synchronization capability
• Message Contents (ID) scanning
• Unique Serial-Number, accessible via SPI
• Crystal-Oscillator with on chip Fine-Tuning, Clock-Output with configurable Prescaler
• Supply Voltage Range 3.0 V to 3.6 V and 4.5 V to 5.5 V
• Package PG-TSSOP-28-1
• Operating Temperature Range -40 to +105°C
• Qualified according automotive AEC-Q100
• Evaluation boards, reference designs, and free PC configuration and evaluation tools available

Applications

• Tire Pressure Monitoring Systems
• Remote Keyless Entry Systems
• Remote Control Systems