EWM-900-FDTC-HS Radiotronix, EWM-900-FDTC-HS Datasheet
EWM-900-FDTC-HS
Specifications of EWM-900-FDTC-HS
Related parts for EWM-900-FDTC-HS
EWM-900-FDTC-HS Summary of contents
Page 1
... No External Parts are required • Simple serial programming interface • RSSI Description The EWM-900-FDTC is ideal for unlicensed voice and data applications. The transceiver module requires no external RF components except for the antenna designed to make FCC and ETSI approvals easy. The transceiver operates in full duplex. It can ...
Page 2
Document Control Created By Steve Montgomery Engineering Review Marketing Review Approved - Engineering Approved - Marketing Revision History Revision Author Date 1.0 SJM 10/30/01 1.1 SJM 11/18/02 1.2 GWH 01/22/03 1.3 TRM 11/26/03 1.4 GWH 2/10/04 10/30/02 Description Document Created ...
Page 3
Table of Contents Typical Applications ............................................................................................ i Features................................................................................................................ i Description ........................................................................................................... i Document Control............................................................................................... ii Revision History.................................................................................................. ii Table of Figures ................................................................................................. iii Pin Out Diagram.................................................................................................. 1 Pin Description.................................................................................................... 1 Mechanical Drawing ........................................................................................... 2 Absolute Maximum Ratings ............................................................................... 2 Detailed ...
Page 4
... Table of Figures Figure 1, Module Pin Diagram......................................................................................................... 1 Table 1, EWM-900-FDTC Module Pin Description.......................................................................... 1 Figure 2, Mechanical Drawing of EWM-900-FDTC ......................................................................... 2 Table 2, Absolute Maximum Ratings............................................................................................... 2 Table 3, Detailed Electrical Specifications ...................................................................................... 3 Figure 3, Block Diagram of Module ................................................................................................. 4 Figure 4, Serial Programming Waveforms. ..................................................................................... 6 Table 4, Reference Frequency Register ......................................................................................... 6 Table 5, Register Address Bits ........................................................................................................ 6 Table 6, Receive VCO Register ...................................................................................................... 7 Table 7, Transmit VCO Register ...
Page 5
... Transmit Data/Audio Input. Power Supply. Vcc should be bypassed with a .01uF ceramic 16 VCC capacitor and filtered with a 4.7uF tantalum capacitor. Noise on the power supply will degrade receiver sensitivity. Table 1, EWM-900-FDTC Module Pin Description EWM-900-FDTC Data Sheet Page 1 Revision 1.2 - 2/11/2004 Data Sheet ...
Page 6
... EWM-900-FDTC Full Duplex Voice/Data Transceiver Mechanical Drawing Figure 2, Mechanical Drawing of EWM-900-FDTC Absolute Maximum Ratings Parameter Min Power Supply & all input pins -0.3 Soldering Temp (10 sec) Storage Temperature -50 Operating Temperature 0 Table 2, Absolute Maximum Ratings Detailed Electrical Specifications Parameter (General) Min Operating Voltage 2 ...
Page 7
... EWM-900-FDTC Full Duplex Voice/Data Transceiver Audio Output Level Data High Voltage Vcc-0.7 Data Low Voltage RSSI Voltage Range 0.1 RSSI Gain RSSI Dynamic Range Parameter (Transmitter) Min Output Power nd 2 Harmonic Power rd 3 Harmonic Power th 4 Harmonic Power Modulation Bandwidth 0.3 Data Input High Voltage Vcc-0 ...
Page 8
... EWM-900-FDTC Full Duplex Voice/Data Transceiver Figure 3, Block Diagram of Module EWM-900-FDTC Data Sheet Page 4 Revision 1.2 - 2/11/2004 Data Sheet ...
Page 9
... EWM-900-FDTC Full Duplex Voice/Data Transceiver Circuit Description The EWM-900-FDTC is a complete, fully integrated FM/FSK transceiver module capable of full- duplex transmission and reception of voice and data. The transceiver operates on one of 56 channels in the 902-928MHz unlicensed band. No external RF components (except for the antenna) are required. ...
Page 10
... EWM-900-FDTC Full Duplex Voice/Data Transceiver Configuration The transceiver is configured by programming four registers via a three-wire serial interface comprised of CLK (pin 10), DAT (pin 11), and LE (pin 12). When LE is high, bits are shifted in from DAT on each rising edge of CLK. The most significant bit of the most significant byte is shifted in first. Bits 0 and 1 of byte 0 determine which register is programmed ...
Page 11
... EWM-900-FDTC Full Duplex Voice/Data Transceiver Count [2: Count [5: Pad Trim [1: Table 6, Receive VCO Register The receive VCO control register determines the operating channel of the receiver. The receive frequency is determined by the values of the A, F, and M counters. The trim bits are used to adjust the tuning range of the receive VCO. The trim value is determined at the factory and is provided with each module clearly marked on the top of the module in indelible ink on either the module’ ...
Page 12
... EWM-900-FDTC Full Duplex Voice/Data Transceiver The transmit VCO control register determines the operating channel of the transmitter. The receive frequency is determined by the values of the M, A, and F counters. Note that the TX register has three trim bits, where the RX register has only two. The trim bits are used to adjust the tuning range of the transmit VCO ...
Page 13
... Table 9, Receive/Transmit Channel Programming Table EWM-900-FDTC Data Sheet RX: EWM-900-FDTC-HS TX: EWM-900-FDTC- Frequency 924.850 578 30 0 924.900 578 31 0 924.950 578 0 0 925.000 578 1 0 925.050 578 ...
Page 14
... EWM-900-FDTC Full Duplex Voice/Data Transceiver Figure 5, Evaluation Board Schematic Diagram EWM-900-FDTC Data Sheet Page 10 Revision 1.2 - 2/11/2004 Data Sheet ...
Page 15
... EWM-900-FDTC Full Duplex Voice/Data Transceiver Applications Information Figure 5 shows the schematic diagram of our evaluation board. All of the transceiver parameters in the specification sheet were determined on this board. Power Supply The transceiver is designed to operate from power supply. Power is provided to the transceiver on pin 16. This power supply should be noise-free. Noise on the power supply will degrade the receiver sensitivity, thereby decreasing range ...
Page 16
... NOTE: The RSSI is not a calibrated value. The actual signal range, dynamic range, and voltage will vary from part to part. The LNA should be turned off by bringing LNAEN low whenever the input signal level is above -70dBm. Ordering Information PRODUCT EWM-900-FDTC-BS EWM-900-FDTC-HS Table 10, Ordering Information EWM-900-FDTC Data Sheet ORDER CODE 100-900-01A 100-900-02A Page 12 Revision 1 ...