DEVELOPMENT KIT (Info Click here) DNT900 900 MHz Frequency Hopping Spread Spectrum Transceiver Point-to-Point and Point-to-Multipoint Network Topologies Transmitter Power Configurable from 1 mW to 1 W RF Data Rate Configurable from 38.4 to 500 kb/s Serial Port Rate up to 460.8 kb/s for Streaming Applications Low Cost 128-Bit AES Encryption 900 MHz FHSS Separate Serial Port for Diagnostics Transceiver Analog and Digital I/O for Sensor Applications FCC and Canadian IC Certified for Unlicensed Operation Module with The DNT900 FHSS transceiver module is a low cost, high-power solution for point-to- I/O point and point-to-multipoint wireless systems in the 900 MHz ISM band. The RF output power of the DNT900 can be set from 1 mW to 1 W, and the RF data rate can be set from 38.4 to 500 kb/s. The DNT900 receiver includes a low-noise preamplifier protected by two SAW filters, providing an excellent combination of receiver sensitivity and out-of- band interference rejection. The DNT900 module includes analog, digital and serial I/O, providing the flexibility and versatility to serve applications ranging from cable replace- ments to sensor networks. The DNT900 transceiver module is easy to integrate and pro- vides robust wireless communications up to 40 miles in line-of-sight installations. DNT900 Absolute Maximum Ratings Rating Value Units All Input/Output Pins -0.5 to +3.3 V Shown with Shield Removed o Non-Operating Ambient Temperature Range -40 to +85 C DNT900 Electrical Characteristics Characteristic Sym Notes Minimum Typical Maximum Units Operating Frequency Range 902.75 927.25 MHz Hop Dwell Time 5 200 ms Number of RF Channels 50 Modulation FSK RF Data Transmission Rates 1 38.4, 115.2, 200 and 500 kb/s Receiver Sensitivity: -5 10 BER 38.4 kb/s -108 dBm -5 10 BER 200 kb/s -98 dBm -5 10 BER 500 kb/s -94 dBm 1, 10, 100, 250, 500, 1000 at 38.4 to 200 kb/s Transmitter RF Output Power Levels 1 mW 1, 10, 85 at 500 kb/s Optimum Antenna Impedance 50 DNT900P - U.FL Coaxial Connector RF Connection DNT900C - U.FL Connector or PCB Pad Network Topologies Point-to-Point, Point-to-Multipoint Access Schemes CSMA and TDMA www.RFM.com E-mail: info rfm.com Page1of7 2008-2009 by RF Monolithics, Inc. DNT900 - 06/11/09DNT900 Electrical Characteristics Characteristic Sym Notes Minimum Typical Maximum Units Number of Network Nodes: TDMA Mode 16 CSMA Mode unlimited ADC Input Range 0 3.3 V ADC Input Resolution 10 bits ADC Sample Rate 10 ms Signal Source Impedance for ADC Reading 10 K PWM (DAC) Output Range 0 3.3 V PWM (DAC) Output Resolution 2 8 bits PWM Output Period 20 s 1.2, 2.4, 4.8, 9.6, 19.2, 28.8, 38.4, 57.6, 76.8, Primary Serial Port Baud Rates kb/s 115.2, 230.4, 460.8 Diagnostic Serial Port Baud Rate 38.4 kb/s Digital I/O: Logic Low Input Level -0.5 0.8 V Logic High Input Level 2 3.3 V Logic Input Internal Pull-up Resistor 50 200 K Logic Input Internal Pull-down Resistor 50 180 K Power Supply Voltage Range V +3.3 +5.5 Vdc CC Power Supply Voltage Ripple 10 mV P-P Peak Transmit Mode Current, 1 W Output 1200 mA Average Operating Receive Current: Base 105 mA Remote, No Data Transmission 35 mA Remote, 9.6 kb/s Continuous Data Stream 40 mA Remote, 115.2 kb/s Continuous Data Stream 53 mA Sleep Current 3 50 225 A DNT900C Mounting Reflow Soldering DNT900P Mounting Socket o Operating Temperature Range -40 85 C Operating Relative Humidity Range, Non-condensing 10 90 % Notes: 1. The DNT900 achieves regulatory certification under FHSS rules at air data rates of 38.4, 115.2 and 200 kb/s. At 500 kb/s, the DNT900 achieves regulatory certification under digital modulation or DTS rules. The DNT900 still employs frequency hopping at 500 kb/s to mitigate the effects of interference and multipath fading, but hops on fewer, more widely spaced frequencies than at lower data rates. Maximum RF power at 500 kb/s is 85 mW. 2. PWM is set with an 8-bit value. DAC resolution is limited to 7 bits by residual ripple at output of low-pass filter. o 3. Maximum sleep current occurs at +85 C. CAUTION: Electrostatic Sensitive Device. Observe precautions when handling. www.RFM.com E-mail: info rfm.com Page2of7 2008-2009 by RF Monolithics, Inc. DNT900 - 06/11/09