Fast Switching Thyristors

Frequency400 MHz to 440 MHz
Weight5 gms
Operating Temperature-40° to +85° C
InterfaceSingle board transceiver with SPI Interface
Supply TypeManufacturer, Exporter, Supplier, Retailer
Preferred Buyer Location All over the world

Product Details

Frequency400 MHz to 440 MHz
Weight5 gms
Operating Temperature-40° to +85° C
Other FeaturesOn-chip VCO and fractional-N PLL
Data Rate1.2 kbps to 19.2 kbps
Data SheetDownload
Supply Voltage2.3 V to 3.6 V
RF Output PowerProgrammable output power from -20 dBm to +13 dBm in 63 steps
Antenna OptionsSMA Whip Antenna
−114 dBm at 9.6 kbps, FSK
In Transmit mode: 22 mA (at 10 dBm output)
On-chip 7-bit ADC and temperature sensor
Power ConsumptionIn Receive mode: 18 mA
Dimension40.34 x 31.72 (L x W) in mm
Application NoteDownload
ParametersValue
−114 dBm at 9.6 kbps, FSK
Receiver Sensitivity−119 dBm at 1 kbps, FSK.
Part NumberRDM-A4FZ
InterfaceSingle board transceiver with SPI Interface
ModulationFSK, GFSK, ASK, OOK and GOOK
Fully automatic frequency control loop (AFC) compensates for lower
Sample CodeDownload
ComplianceFCC: Yes IC: Yes Europe/ETSI: Yes RoHS: Yes

The VCO operates at twice the fundamental frequency to reduce spurious emissions and frequency pulling problems. The transmitter output power is programmable in 63 steps from −20 dBm to +13 dBm. The UHF transceiver module RF frequency, channel spacing, and modulation are programmable using a simple 3-wire interface. The RF transceiver module operates with a power supply range of 2.3 V to 3.6V and can be powered down when not in use. A low IF architecture is used in the receiver (200 kHz), minimizing power consumption and the external component count and avoiding interference problems at low frequencies.
The RDM-A4FZ supports a wide variety of programmable features, including Rx linearity, sensitivity, and IF bandwidth, allowing the user to trade off receiver sensitivity and selectivity for current consumption, depending on the application. The receiver also features automatic frequency control (AFC) loop, allowing the PLL to compensate for frequency error in the incoming signal. An on-chip ADC provides read back of an integrated temperature sensor, an external analog input, the battery voltage, or the RSSI signal, which provides savings on an ADC in some applications. The temperature sensor is accurate to ±10°C over the full operating temperature range of −40°C to +85°C. This accuracy can be improved by doing a 1-point calibration at room temperature and storing the result in memory. Applications