SmartLEWIS™︎ RX+ - TDA 5240, TDA 5235, TDA 5225 Receivers with Enhanced Sensitivity

It sounds like a contradictory combination, yet this is what is more and more requested from your receiver design: long range, low energy consumption and flexible adaption to customer requirements.

But if you think this requires high development effort and expensive additional components in your design, think again.

Our new high-sensitivity, low-power receiver family, SmartLEWIS RX+ comprises TDA 5240, TDA 5235 and TDA 5225 and meets all of these challenges with a minimum of external components.

Features

Applications

Multi-band (300-320, 425-450, 863-870 and 902-928MHz) for worldwide coverage
10.5Hz high-resolution sigma-delta fractional-N PLL synthesizer
One crystal frequency for all supported frequency bands
Autonomous receive mode, where desired payload is automatically extracetd and interrupts can trigger the host microcontroller to read payload from the FIFO
Ultrafast fallback wake-up criterion
Autonomous receive mode reduces host processor noise and improves system performance
Integrated IF-filter but also optional external CER filter possible
Data rate up to 112kchip/s with several embedded encodings and modulation schemes
Low supply current (0.8µA in power-down, 12µA in run mode)
Voltage supply range 3.3 / 5.0V
Automotive qualified, temperature range -40...+105°C

Remote keyless entry systems
Remote start applications
Tire pressure monitoring
Remote control units
Cordless alarm systems
Remote metering