TR-76D
15Pages

RF Transceiver Module Series Data Sheet © 2018 IQRF Tech s.r.o. www.iqrf.tech www.iqrf.org Datasheet TR-76D 180627 Page 1

Description TR-76D is a family of IQRF transceiver modules operating in the 868 MHz and 916 MHz license free ISM (Industry, Scientific and Medical) frequency band. Its highly integrated ready-to-use design containing MCU, RF circuitry, serial EEPROM and optional on-board antenna requires no external components. SMT mounting and very small dimensions allow space saving. Extended RF power results in higher RF range. Ultra low power consumption fits for battery powered applications. MCU with built-in operating system significantly reduces application development time. Optional DPA framework...

The information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets your specifications. IQRF Tech MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND TO STATED CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE and disclaims all liability arising from this information and its use. Use of IQRF Tech devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to...

Stresses above listed maximum values may cause permanent damage to the device and affect device reliability. Functional operation under these or any other conditions beyond those specified is not supported. Voltage on Q4 to Q15 pins (configured as inputs) vs. GND -0.3 V to (Vcc + 0.3 V) Storage temperature -40 °C to +85 °C Ambient temperature under bias -40 °C to +85 °C Caution: Electrostatic sensitive device. Observe appropriate precautions for handling. Basic components For more information refer to datasheets of ICs used. © 20178 IQRF Tech s.r.o....

Q3, C3 Vcc Power supply voltage SCK SPI clock input -SS SPI Slave select C2OUT Comparator output Q103 IO /LEDG RB7 General I/O pin, programmable pull-up Interrupt / Wake-up on change (IOC) LED1 LEDG supported by OS Q11 3 IO / ADC / LEDR LED2 LEDR supported by OS DACOUT D/A converter output Q12 IO / ADC RB4 General I/O pin, with programmable pull-up Interrupt / Wake-up on change (IOC) RFPGM / (X)LP mode termination AN11 Analog A/D input RE3 General input only pin Q14, C1 IO / ADC / C-IN RA0 General I/O pin Q16 - Do not use, leave unconnected Bottom view...

TR-76D Recommended circuit for development For development, it is recommended to implement the following arrangement:  Decoupling capacitor on VCC to filter the supply voltage. The type and the value should be selected with respect to general rules observed in electronic design, according to given application hardware and power source.  Serial protective resistors on each I/O pin used.  Both system LEDs (LEDR and LEDG) for IQRF OS and DPA status indication and for possible user indication. When the Q10 and Q11 pins are used as user I/Os, it must be taken into account that these pins can...

TR-76D RF range RF range strongly depends on the following design aspects:  Hardware:  Construction of the devices (especially TR location within the device, PCB layout, ground planes, conductive areas and bulk objects such as metallic parts and batteries in the nearest surroundings, with respect to possible reflections and counterpoise effect). To achieve an efficient range and reliable connectivity, no parts impacting the range must be placed close to the built-in meander antenna. Even non-conductive parts including a mainboard PCB under the antenna can significantly impact the range. ...

Diagram 2A: Effective radiated power (ERP) vs. level in the setRFpower(level) function. TR-76D(A), 868 MHz band, channels 0 to 67. Refer to IQRF OS Reference guide. Diagram 2B: Effective radiated power (ERP) vs. level in the setRFpower(level) function. TR-76D(A), 916 MHz band. Refer to IQRF OS Reference guide. Diagram 2C: Relative RF range vs. level in the setRFpower(level) function. TR-76D(A), 868 MHz and 916 MHz bands. Refer to IQRF OS Reference guide. © 20178 IQRF Tech s.r.o.

Diagram 3A: Relative effective radiated power (ERP) vs. channel, with respect to channel 52 (100 %). TR-76D(A), 868 MHz band. Diagram 3B: Relative effective radiated power (ERP) vs. channel, with respect to channel 104 (100%). TR-76DA, 916 MHz band. Diagram 4: Relative RF range vs. level in the checkRF(level) function in STD, LP and XLP RX modes. Refer to IQRF OS Reference guide.

Diagram 5: Relative RF range vs. antenna height above the ground. TR-76DA, 868 MHz and 916 MHz bands. © 20178 IQRF Tech s.r.o. www.iqrf.tech www.iqrf.org Datasheet TR-76D 180627 Page 10

Minor improvements to optimize production. Minor improvements to optimize production. TR-76DA also for 916 MHz band. Minor improvements to optimize production. TR-76DA for 868 MHz band only. First standard release. TR-76DA for 868 MHz band only. © 20178 IQRF Tech s.r.o. www.iqrf.tech www.iqrf.org Datasheet TR-76D 180627 Page 11

TR-76D Application Users have to ensure observing local provisions and restrictions relating to the use of short-range devices by software, e.g. the CEPT ERC/REC 70-03 Recommendation and subsequent amendments in EU. See IQRF video tutorial set on www.iqrf.org/videos. Assembly For proper mounting of surface mount TR-76Dx modules and avoiding damage during solder reflow assembly, the IPC/JEDEC J-STD-020C standard must be observed. The parts must be baked dry according to IPC/JEDEC J-STD-033C, MSL 4 before reflow soldering. For reflow profile and details refer to the AN010 Application note –...

TR-76D Sealing In case of sealing or protecting TR modules against a harsh environment by coating, encapsulating or potting using a lacquer, gel or other filling matter, the ion cleanness of the TR modules must be less than 1 µg/cm 2 of NaCl equivalent otherwise there is a risk of corrosion. Such a surface treatment always impacts the RF range. Thus, sealing material should have the relative permeability (µr) as close to 1 within given frequency band. E.g. µr = 4 at 868 MHz decreases relative range to approx. 70%. Protecting materials, methods, accomplishments and handling must comply with...