RC-RFSK4-433FSK Radio Receiver Module RC-RFSK4-433 is a FSK Radio Receiver Module with PLL Synthesizer and crystal oscillator. This receiver module is based on Infineon TDA5240 chip, controlled by a STM32 microcontroller ; in this way the module works as a stand-alone receiver. Single Line Package with power down mode and RSSI Output. This module was designed to replace all stand-alone receivers FSK module based on the obsolete TDA5210 chip. - Wireless security systems - Home and building automation - Automatic Measure Reading - Wireless Sensor Network Technical Characteristics Mechanical Dimensions Components Side Radiocontrolli s.r.l refuses any responsibility for irregular uses of the devices and for any possible lack or inaccuracy of the data and reserves the right to change in whole or in part these information without notice.

RC-RFSK4-433RSSI OutputThe RSSI provides a DC Voltage proportional to the peak value of the receive data signal. This output can be used as an indicator for the received signal strength to use in wake-up circuits and other application. RF IN (dBm) Radiocontrolli s.r.l refuses any responsibility for irregular uses of the devices and for Pag- 2 / 3 any possible lack or inaccuracy of the data and reserves the right to change in whole www.raai°contr°Nl.com or in part these information without notice.

The receiver module must be powered from a regulated voltage. In proximity of the receiver module it is necessary to insert a ceramic decoupling capacitor (100nF). The ground plane must be completely encircle the entire receiver in particular the area of the Antenna connection (we recommend a minimum of 40-50mm radius). The 50ohm connection should be as short as possible. For a pcb with 1.6mm thickness, the track “50ohm connection” must be 2.5mm, this track should be separated from the GND for 2mm. On the opposite side of 50ohm connection should be a ground plane. Keep the receiver module away...