smart radio modem


433MHz  Multichannel Radio Modem 

The RCQ2-434  is a high performance wireless modem providing a reliable low cost serial data communications link that can be used for many data communications applications at an exceptionally competitive price. The modem operates in the ISM 433 MHz band. The RF modem is very simple to use and provides a wireless RS232 link with a RF data rate of up to 100 kbps.  The transceivers have the functions of a complete radio modem and simply require CMOS/TTL data at the transmit input and the corresponding transceiver(s) output the same data. Preamble and CRC are automatically generated and added to the RF transmission. The RCQ2-434 can use any channel in 100 (200) KHz step. Possible applications include one-to-one and multi-node wireless links in applications including  security, EPOS, wireless sensor network, industrial process monitoring and computer networking. Because of their small size and low power requirements, (the consumption in power down mode is < 2 ) this module is a ideal for use in portable, batterypowered applications such as hand-held terminals.

Based on RCS1KSMT-434 RadioControlli device.



Technical Characteristics MIN TYP MAX UNIT
Supply Voltage  2.2  3.0 3.60 Volt
 Supply Current (RX mode)   20    mA
 Supply Current (TX mode / +20dBm)   85    mA
 Supply Current (TX mode / +0dBm)     10    mA
 Supply current sleep mode    <2    µA
 Power up to stable receiver data out     30   ms
 Power up to full RF Power out   30   ms
 Standby to Receive mode   1   ms
 Standby to Transmit mode   1   ms
 RX Frequency Range CEPT/ERC/REC 70-03 433.1   434.1 MHz
 RF Output Power 1   +20 dBm
 RF Sensitivity (1.2 Kb/sec Data Rate)
  -112     dBm
 Frequency Deviation
   ±50   KHz
 GSFK Manchester encoded data rate   100   Kbps
 Operating Temperature range -10   +55 °C
Mechanical Dimensions  15 x 23.52mm        



Pads  Name  Description
 1  NIRQ  In this application this pin must be connected to pin 21 with a pull-up resistor
 2  SDN  In this application this pin must be connected to pin 26 with a pull-down resistor
 3  LEDRX  Led RX(open collector input/output max 4mA)
 4  LEDTX  Led TX(open collector input/output max 4mA)
 5  CTS  UART Clear to send
 6  CONF  Configuration modality
 7  PD  Power down mode
 10  NU  Not used
 11  DR1  DR1 Baud rate selection
 12  DR2  DR2 Baud rate selection
 13  RTS  UART Request to send
 14  GND  Ground
 15  GND  Ground
 16  NU  Not used
 17  NU  Not used
 18  NU  Not used
 19  NU  Not used
 20  NU  Not used
 21  P22  In this application connected to pin 1
 22  NU  Not used
 23  RST  Device reset 
 24  VCC  Power Supply
 25  VCC  Power Supply
 26  P20  In this application connected to pin 2





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