32000473

HI-TECH COMPANY OOK TRANSCEIVER 3-2000473 868,35 MHz / P.n. 3-2000473 DESCRIPTION: The 3-2000473 module is an On-Off Key transceiver operating at 868,35 MHz, low consumption and low cost. In transmission the typical power output is 10 mW (+10 dBm) and the receiver sensitivity reaches –98 dBm.. There is an auxiliary pin for RF input/output to use when in transmission is sufficient 1 mW (0 dBm) power output and it wants to limit the current consumption. In power down mode the 3-2000473 current consumption is about 5 µA and so is perfect for battery supply systems. P I N CO N F I G U R AT I O N A N D D E F I N I T I O N : 1 N.C. 2 +VccTR 3 RFH 4 GND 5 +Boost 6 GND 7 CTRL1 8 CTRL0 9 RFL 10 GND 12 T.P. 13 RXD 1 2 3 4 5 6 7 8 9 10 12 13 14 L I M I T VA L U E S : Transceiver Power Supply+Vcc (pin 2): Booster Power Supply+Boost (pin 5): Voltage Range on CTRL1 e CTRL0 (pin 7 e 8): Operative Temperature: Storage Temperature: MIPOT S.P.A. Via Corona, n. 5 (Zona Ind.) 34701 Cormons (GO) Italy Tel.+39 0481 630200 r.a. Fax +39 0481 62387 mipot@mipot.com from -0,3 to 5,2 V from -0,3 to 5,2 V from -0,3 to 3,8 V from -40 to +85°C from -50 to +100°C 14 TXD ELECTRICAL CHARACTERISTICS: HI-TECH COMPANY Parameter Min. Transceiver Power Supply +Vcc (pin 2) Booster Power Supply +Boost (pin 5) Voltage Range on CTRL1 e CTRL0 (pin 7 e 8) Tip. 4,5 4,5 0 Max. Units 5,2 5,2 3,8 V V V Receiver Electrical Characteristics: VOL on RX Data (pin 13) VOH on RX Data (pin 13) +Vcc = 4,5 … 5,0 V Current Consumption +Vcc = 4,5 … 5,0 V Carrier Frequency f0 Frequency Bandwidth at –3 dB Sensitivity for 2400 baud Sensitivity for 19200 baud Sensitivity for 38400 baud Rejection ±30 MHz RX Switching On Time 0 3,4 3,4 -93 -92 -91 55 3,9 3,6 868.35 f0 ± 300 -97 -95 -93 250 V V mA MHz KHz dBm dBm dBm dB µS Transmitter Electrical Characteristics: VIL on TX Data (pin 14) 0 V VIH on TX Data (pin 14) a +Vcc = 4,5 … 5,0 V 5 V Current Consumption +Vcc = 4,5 … 5,0 V square wave modulation and 50% Duty Cycle 22 mA Carrier frequency f0 868,05 868,65 MHz Data Transmission Rate 1200 38400 baud Power Output +Vcc, VIH = +5,0 V +7.5 +10 dBm Second Harmonic Level (1737 MHz) +Vcc = 4,5 … 5,0 V -30 dBm Third Harmonic Level (2605 MHz) +Vcc = 4,5 … 5,0 V -30 dBm Fourth Harmonic Level (3473 MHz) +Vcc = 4,5 … 5,0 V -30 dBm Radiated Emissions According to I-ETS-300-220 and I-ETS-300-683 TX Switching On time 15 µs Power Down Mode Electrical Characteristics: Current Consumption 5 µA PIN DESCRIPTION: Pin Name Description 1 2 3 N.C. +VccTR RFH Not Connected Power Supply RF Input/Output. In transmission the power output is 10 mW. An antenna with 50 Ω characteristic impedance can be connected , see three examples below. Note: if this pin is used then the ausiliary pin RFL (pin 9) must be not connected. Isolated copper wire with 0,5 mm thick Solenoid diameter: 3,2 mm 12 coils 3 mm spaced MIPOT S.P.A. Via Corona, n. 5 (Zona Ind.) 34701 Cormons (GO) Italy Tel.+39 0481 630200 r.a. Fax +39 0481 62387 mipot@mipot.com Antenna on PCB Strip thickness: 1 mm Ring Area: from 4 to 10 cm2 fp (feed point):from 15 to 25% of the entire antenna lenght C: variable capacity 1,5… 5 pF Conductive wire, strip on PCB or their com-bination up to 8,6 cm total lenght Note: the brought back values over there are pure indicative. Optimal antenna matching goes searched using adequate instrumentation (for es. Networks Analyzer). HI-TECH COMPANY PIN DESCRIPTION: Pin Name Description 4 5 GND +Boost Ground (0 V) Booster Power Supply : this pin supplies the 10 mW RF amplifier stage. Note: supply the booster only during transmission (see pin 7 description – CTRL1); if the power otput is 1 mW ( using pin RFL) this pin must be connected to ground or not connected 6 7 GND CTRL1 Ground (0 V) The transceiver function mode is defined throught the inputs CTRL1, CTRL0 and +Boost according to the following table : Function Power down OOK Transmission 10 mW (pin RFH) OOK Transmission 1 mW (pin RFL) Not Define R eceiving Mode CTRL1 0 0 0 1 1 CTRL0 0 1 1 0 1 +Boost 0 1 0 X 0 Note: as it turns out from the Electrical Characteristics, the maximum voltage on CTRL1 and CTRL0 input is 3,8 V, inferior to +VccTR and +Boost. The following solution is recommended : 8 9 CTRL0 RFL See pin 7 description (CTRL1) RF Input/Output . In transmission the power output is 1 mW. To this pin an antenna with 50 Ω characteristic impedance can be connected. For the antenna see pin RFH description (pin 3) Note: if this pin is used then is necessary to remove the thick film resistor Rlow ( 10 K_ ). See figure Rlow da rimuovere 5 10 12 GND T.P. 6 7 Ground (0 V) Test Point: rapresents the demodulated signal not squared. In receiving mode the characteristic impedance of this pin is about 1 K_, while in trasmission and power down mode becomes very high. If the received signal has 50% duty cycle, the si-gnal on T.P. changes to 10 mV/dB and can reach the 685 mV. For a smaller duty cycle the two value above are proportionally lower. It is possible to obtain a RSSI function on the received signal measuring the value of offset that the T.P. assumes during the reception of the signal. The simpler outline in order to obtain a RSSI le-vel is the following: Typical values for the RSSI levels are: Max Min MIPOT S.P.A. Via Corona, n. 5 (Zona Ind.) 34701 Cormons (GO) Italy Tel.+39 0481 630200 r.a. Fax +39 0481 62387 mipot@mipot.com T.P. Offset 2.10 V 2.03 V 1.97 V 1.92 V 1.86 V 1.79 V 1.77 V RF Signal Level - 50 dBm - 60 dBm - 70 dBm - 80 dBm - 90 dBm -100 dBm In absence of RF signal The applications of the RSSI signal can be: - level indicator of the radio signal. - battery economizer, since avoid the use of the booster in presence of strong signal. - keeping the booster off, when two devices are very near, avoids the saturation of the receiver. It is recommended to disable the booster when the RSSI level is greater than 2 V : If RSSI < 2.0 V Tx booster = ON If RSSI > 2.0 V Tx booster = OFF HI-TECH COMPANY PIN DESCRIPTION: Pin Name 13 14 RXD TXD Description Data Output in Receiving Mode Data Input in Trasmission. Note: in receiving and power down mode on this pin must be a zero logical level CUSTOMIZING THE TR ANSCEIVER: The Transceiver is supplied in a standard configuration, whose performances are described in the techni-cal characteristics. Various configurations are possible in order to optimize the behavior in base of the di-gital signal characteristics. In the figure and in the following table the positions and the indicative values of the involved components are brought back. Description Data Trasmission Rate Min. Impulse Width Single Bit Max. Impulse Width 4 Bit Capacitor Capacitor Capacitor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Symbol CAGC CPKD CBBO RTXM RLPF RREF RTH2 RTH1 RPR RPW Operation Mode Default Values OOK 2.4 OOK 19.2 ASK 57.6 ASK 115.2 Units kbps 1.2 ÷ 38.4 417 52 17 8 _S - 1666 100 8.2 240 100 10 1100 270 vs GND 208 15 8.2 30 100 27 330 270 vs GND 69 4700 2 5.6 8.2 25 100 100 100 160 1000 vs Vcc 34 2200 1 2.7 8.2 12 100 100 100 160 1000 vs Vcc µS pF nF nF K K K K K K K 150 8.2 30 100 82 100 330 270 vs GND M O D I F Y I N G T H E V O LTA G E S U P P LY : Refering to the Fig. 1, the Transceiver can be configure in order to work with 5 V or 3 V power supply applying the following changes : Vcc 5V 3V D5 - BAV99 MOUNTED NOT MOUNTED JP3 - 0 ohm NOT MOUNTED MOUNTED R3 22K 18K RTXM 8K2 3K3 MECHANIC AL DIMENSIONS: MIPOT S.P.A. Via Corona, n. 5 (Zona Ind.) 34701 Cormons (GO) Italy Tel.+39 0481 630200 r.a. Fax +39 0481 62387 mipot@mipot.com More information about the integrated circuit TR1001 employed for theTransceiver realization can be find on the manufacturer website: RFM.com. Mipot S.p.A. reserves the right to modify the specifications without notice.