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RTX-8L3V-FSK/ASK is an RF digital data transceiver, with high sensitivity and power down mode
functionality, working on the ISM free-license band of 868.30 MHz, in half-duplex way, FSK modulated and
fast switch time TX→ → → → RX and RX→ → → → TX.
It's ideal for low cost solutions, battery supplied systems and thanks to its small size to hand-held terminals;
for 2-way radio system needing to save space and battery life.
Max speed rate is 4 Kbit/sec Manchester encoded.
The device can work in compliance with HCS Microchip data frame.
All transceiver features can be handled by 4 lines (RX/TX, ENABLE, DATA IN, DATA OUT).
The module is available at 3V of power supply and it's compliant to European Normative EN300 220 and
EN301 489.
Characteristics
Low current consumption
Low cost
PLL synthesis crystal based
Single RF channel
Very small size (25.4x12.4 mm)
Max bit rate : 4800 bps
Max Output Power : 10mW
High sensitivity on reception
Voltage supply: 3V
Absolute maximum
Operational Temperature
Stocking Temperature
Voltage Supply
Input Voltage
Output Voltage
Le caratteristiche tecniche possono subire variazioni senza preavviso. AUR°EL S.p.A. non si assume la responsabilità di danni causati dall'uso improprio del dispositivo.
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AUR°EL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY
Tel.: +39.0546.941124 Fax: +39.0546.941660
http://www.aurelwireless.com
- email:
rfcomm@aurel.it
Applications
-20 °C ÷ +85 °C
-40 °C ÷ +100 °C
-0,3V ÷ +6V
-0,3V ÷ VCC + 0,3V
-0,3V ÷ VCC + 0,3V
RTX-8L3V-FSK
RTX-8L3V-ASK
Wireless hands-free devices
Home automation
Wireless sensors
Meter reading
2-way remote controls
Data logging
User Manual
28/04/2020
Pag1 di 17
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Summary of Contents for AUREL RTX-8L3V-FSK
- Page 1 --------------------------------------------------------------------------------------------------------------------------------------------------- User Manual RTX-8L3V-FSK/ASK is an RF digital data transceiver, with high sensitivity and power down mode functionality, working on the ISM free-license band of 868.30 MHz, in half-duplex way, FSK modulated and fast switch time TX→ → → → RX and RX→ → → → TX.
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Page 2: Technical Characteristics
RTX-8L3V-FSK RTX-8L3V-ASK --------------------------------------------------------------------------------------------------------------------------------------------------- User Manual Technical Characteristics Table 1 – Technical characteristics Min. Typ. Max. Unit DC Levels Voltage supply Supply current (RX mode) Enable=1 11,2 TX/RX=0 Supply current(PWRDWN mode) Enable = 0 µA TX/RX = 0 Data in = 0... - Page 3 RTX-8L3V-FSK RTX-8L3V-ASK --------------------------------------------------------------------------------------------------------------------------------------------------- User Manual Pin description and mechanical size Pin-out 1) ANTENNA 2) GND 4) DATA IN 5) TX/RX 6) ENABLE 7) GND 8) RSSI OUT 9) DATA OUT 10) +VCC Table 2 – Pin description n° Pin Name...
- Page 4 RTX-8L3V-FSK RTX-8L3V-ASK --------------------------------------------------------------------------------------------------------------------------------------------------- User Manual Block diagram VCO-RX SAW filter Switch PLL logic antenna control VCO-TX Figure 1 Transmitter It embeds a VCO oscillator controlled by PLL circuit in order to achieve short switching time TX-RX and wake up time from stand-by mode.
- Page 5 RTX-8L3V-FSK RTX-8L3V-ASK --------------------------------------------------------------------------------------------------------------------------------------------------- User Manual Front end circuit and AGC: A SAW filter is in the middle between antenna and pre-amplifier stage. AGC (automatic gain control) circuit acting on the gain improves the dynamic of RF received signal. AGC turns on whenever the RF received signal is more powerful than -74dBm and it sets the max gain 7ms after the RF signal goes down the -59 dBm.
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Page 6: Operational Modes
RTX-8L3V-FSK RTX-8L3V-ASK --------------------------------------------------------------------------------------------------------------------------------------------------- User Manual Operational modes RTX-8L3V-FSK/ASK can work in 4 different modes: 1. Power Down Mode 2. Idle Mode 3. RF Transmission Mode 4. RF Receiving Mode 1. Power Down Mode (PWRDWN) By driving low level pin 6 (ENABLE) the device enters the saving-energy mode, where consumption is less than 0,5µA: this mode the transceiver can’t neither receive nor transmit. - Page 7 RTX-8L3V-FSK RTX-8L3V-ASK --------------------------------------------------------------------------------------------------------------------------------------------------- User Manual Switching PWRDN→ → → → RX, PWRDN→ → → → TX, RX→ → → → TX, TX→ → → → RX. In order to respect latency time of PLL circuit and peak detectors in data-slicer stage, it is mandatory to keep the timing in the following pictures, in switching from TX to RX, from RX to TX and from power down to RX or TX.
- Page 8 RTX-8L3V-FSK RTX-8L3V-ASK --------------------------------------------------------------------------------------------------------------------------------------------------- User Manual Time chart PWRDWN→ → → → TX Figure 4 Le caratteristiche tecniche possono subire variazioni senza preavviso. AUR°EL S.p.A. non si assume la responsabilità di danni causati dall’uso improprio del dispositivo. --------------------------------------------------------------------------------------------------------------------------------------------------------------------- AUR°EL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY 28/04/2020 Tel.: +39.0546.941124 Fax: +39.0546.941660...
- Page 9 RTX-8L3V-FSK RTX-8L3V-ASK --------------------------------------------------------------------------------------------------------------------------------------------------- User Manual Time chart RX→ → → → TX Figure 5 Le caratteristiche tecniche possono subire variazioni senza preavviso. AUR°EL S.p.A. non si assume la responsabilità di danni causati dall’uso improprio del dispositivo. --------------------------------------------------------------------------------------------------------------------------------------------------------------------- AUR°EL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY 28/04/2020 Tel.: +39.0546.941124 Fax: +39.0546.941660...
- Page 10 RTX-8L3V-FSK RTX-8L3V-ASK --------------------------------------------------------------------------------------------------------------------------------------------------- User Manual Time chart TX→ → → → RX Figure 6 Le caratteristiche tecniche possono subire variazioni senza preavviso. AUR°EL S.p.A. non si assume la responsabilità di danni causati dall’uso improprio del dispositivo. --------------------------------------------------------------------------------------------------------------------------------------------------------------------- AUR°EL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY 28/04/2020 Tel.: +39.0546.941124 Fax: +39.0546.941660...
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Page 11: Device Usage
RTX-8L3V-FSK RTX-8L3V-ASK --------------------------------------------------------------------------------------------------------------------------------------------------- User Manual Device Usage To take advantage of the performances detailed in the Technical Specifications, and in order to comply with the operating conditions which characterize the Certification, the transmitter must be fitted on a printed circuit considering the followings: DC Supply: 1. - Page 12 User Manual Reference Rules RTX-8L3V-FSK/ASK transceivers comply with European set of rules EN 300 220, and EN 301 489. The transceiver must be supplied by a very low voltage safety source protected against short circuits. The equipment can be utilized inside a special insulated housing to ensure the compliance with the EN 60950.
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Page 13: Power Supply Diagram
RTX-8L3V-FSK RTX-8L3V-ASK --------------------------------------------------------------------------------------------------------------------------------------------------- User Manual Power Supply Diagram In Figure 8 it is displayed the diagram of current consumption in TX and RX mode versus voltage supply. In TX mode the current consumption has been measured driving high pin 4 (data in). - Page 14 RTX-8L3V-FSK RTX-8L3V-ASK --------------------------------------------------------------------------------------------------------------------------------------------------- User Manual Thermal Diagrams Thermal test has been conducted at 3V voltage supply. Figure 9 Le caratteristiche tecniche possono subire variazioni senza preavviso. AUR°EL S.p.A. non si assume la responsabilità di danni causati dall’uso improprio del dispositivo.
- Page 15 RTX-8L3V-FSK RTX-8L3V-ASK --------------------------------------------------------------------------------------------------------------------------------------------------- User Manual Figure 10 Figure 11 Le caratteristiche tecniche possono subire variazioni senza preavviso. AUR°EL S.p.A. non si assume la responsabilità di danni causati dall’uso improprio del dispositivo. --------------------------------------------------------------------------------------------------------------------------------------------------------------------- AUR°EL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY 28/04/2020 Tel.: +39.0546.941124 Fax: +39.0546.941660...
- Page 16 RTX-8L3V-FSK RTX-8L3V-ASK --------------------------------------------------------------------------------------------------------------------------------------------------- User Manual Figure 12 Figure 13 Le caratteristiche tecniche possono subire variazioni senza preavviso. AUR°EL S.p.A. non si assume la responsabilità di danni causati dall’uso improprio del dispositivo. --------------------------------------------------------------------------------------------------------------------------------------------------------------------- AUR°EL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY 28/04/2020 Tel.: +39.0546.941124 Fax: +39.0546.941660...
- Page 17 RTX-8L3V-FSK RTX-8L3V-ASK --------------------------------------------------------------------------------------------------------------------------------------------------- User Manual Figure 14 User manual revision summary Revision user Release date Changes from the previous revision manual 01/10/2018 First release Le caratteristiche tecniche possono subire variazioni senza preavviso. AUR°EL S.p.A. non si assume la responsabilità di danni causati dall’uso improprio del dispositivo.
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