HumRC TM Series Remote Control and Sensor Transceiver Data Guide
! Warning: Some customers may want Linx radio frequency (“RF”) products to control machinery or devices remotely, including machinery or devices that can cause death, bodily injuries, and/or property damage if improperly or inadvertently triggered, particularly in industrial settings or other applications implicating life-safety concerns (“Life and Property Safety Situations”). NO OEM LINX REMOTE CONTROL OR FUNCTION MODULE SHOULD EVER BE USED IN LIFE AND PROPERTY SAFETY SITUATIONS.
0^ 32^ 34^ 34^ 35^ 36^ 37^ 37^ 39^ 40^ 40^ 40^ 42^ 44^ 46^ Basic Hardware Operation Typical Applications Power Supply Requirements Antenna Considerations Helpful Application Notes from Linx Interference Considerations Pad Layout Board Layout Guidelines Microstrip Details Production Guidelines Hand Assembly Automated Assembly General Antenna Rules Common Antenna Styles Regulatory Considerations HumRC TM Series Remote Control and Sensor Transceiver Data Guide Description 0.55" (13.
Ordering Information Electrical Specifications HumRCTM Series Transceiver Specifications Ordering Information Part Number Description Parameter HUM-***-RC HumRC Power Supply HUM-900-RC-UFL HumRC Series Remote Control Transceiver, Certified, UFL Connector HUM-900-RC-CAS HumRCTM Series Remote Control Transceiver, Certified, Castellation Connection EVM-***-RC HumRC EVM-900-RC-UFL HumRCTM Series Carrier Board with Certified module, UFL Connector EVM-900-RC-CAS HumRCTM Series Carrier Board with
TX Vcc HumRCTM Series Transceiver Specifications Parameter Symbol Min. Typ. Max. Units Notes Output Power Control Range VON TX Sx TX MODE_IND HUM-2.4-RC 56 dB 6 HUM-900-RC-xxx 40 dB 6 RX Sx 50 Ω 4 RX MODE_IND ºC 4 Antenna Port RF Impedance RIN Environmental Operating Temp.
TX Output Power (dBm) 5.00 0.00 -5.00 -10.00 -15.00 -20.00 5.0 Transmitter Output Power (dBm) Typical Performance Graphs -40°C 4.0 3.0 25°C 2.0 1.0 0.0 85°C -1.0 2.0 -25.00 2.5 -30.00 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.30 LVL_ADJ Voltage (V) 3.3 3.6 Supply Voltage (V) Figure 8: HumRCTM Series Transceiver Max Output Power vs. Supply Voltage - HUM-2.4-RC Figure 6: HumRCTM Series Transceiver Output Power vs. LVL_ADJ Resistance - HUM-2.4-RC 11.
29.0 31.0 25°C 29.0 85°C 25.0 -40°C Supply Current (mA) Supply Current (mA) 27.0 23.0 21.0 19.0 17.0 15.0 -35.0 23.0 21.0 19.0 17.0 -30.0 -25.0 -20.0 -15.0 -10.0 -5.0 0.0 5.0 15.0 -35.0 10.0 -30.0 -25.0 -20.0 -15.0 -10.0 -5.0 0.0 5.0 10.0 TX Output Power (dBm) Figure 13: HumRCTM Series Transceiver Average TX Current vs. Transmitter Output Power at 3.3V - HUM-2.4-RC Figure 10: HumRCTM Series Transceiver Average Current vs. Transmitter Output Power at 2.5V - HUM-2.4-RC 40.
28.5 29.0 85°C Supply Current (mA) Supply Current (mA) -40°C 28.0 85°C 28.3 28.5 25°C 27.5 27.0 26.5 28.1 27.9 -40°C 27.7 25°C 27.5 27.3 27.1 26.9 26.7 26.0 2.0 2.5 3.3 26.5 2.0 3.6 2.5 Supply Voltage (V) Figure 14: HumRCTM Series Transceiver TX Current vs. Supply Voltage at Max Power - HUM-2.4-RC 23.5 -40°C 38.5 38.0 25°C 37.5 37.0 85°C 36.5 36.0 3.3 Supply Voltage (V) Figure 15: HumRCTM Series Transceiver TX Current vs.
27.00 Supply Current (mA) 25°C 26.00 25.50 -40°C 25.00 24.50 24.00 Average RX Current (mA) 85°C 26.50 10.00 1.00 2.5V 0.10 3.3V 3.6V 23.50 0.01 23.00 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3 0 3.1 3.2 3.3 3.4 3.5 3.6 15 30 45 60 75 90 105 120 135 150 165 180 195 210 225 240 255 Duty Cycle (s) Supply Voltage (V) Figure 18: HumRCTM Series Transceiver RX Current Consumption vs. Supply Voltage - HUM-2.4-RC Figure 20: HumRCTM Series Transceiver Average RX Current Consumption vs.
-15.00 -25.00 25°C -35.00 -45.00 -55.00 -65.00 -75.00 -85.00 -95.00 1.40 1.20 1.00 0.80 0.40 0.00 2.5 0.00 Input Power (dBm) 1.40 -25.00 3.6 85°C 1.20 -35.00 Standby Current (µA) RSSI Reading (dBm) 3.3 Figure 24: HumRCTM Series Transceiver Standby Current Consumption vs. Supply Voltage - HUM-2.4-RC -15.00 -45.00 -75.00 -40°C Supply Voltage (V) Figure 22: HumRCTM Series Transceiver RSSI Voltage vs. Input Power - HUM-2.4-RC -65.00 25°C 0.60 0.20 -105.00 -100.00 -90.00 -80.00 -70.
Pin Assignments MODE_IND ACK_OUT Pin Number Name I/O 12 POWER_DOWN I Power Down. Pulling this line low places the module into a low-power state. The module is not functional in this state. Pull high for normal operation. Do not leave floating. If this line is high, then the status line outputs are latched (a received command to activate a status line toggles the output state). If this line is low, then the output lines are momentary (active for as long as a valid signal is received).
Pre-Certified Module Pin Assignments Module Dimensions The pre-certified version of the module has mostly the same pin assignments as the standard version. The antenna connection is routed to either a castellation (-CAS) or a u.FL connector (-UFL), depending on the part number ordered. ANT GND 18 NC 3 NC 4 0.07" (1.78) NC 5 6 7 8 0.812" (20.62) 9 10 11 12 13 CMD 2 NC NC 0.45" (11.
Theory of Operation Module Description The HumRCTM Series transceiver is a low-cost, high-performance synthesized FSK transceiver. Figure 31 shows the module’s block diagram. The HumRCTM Series Remote Control module is a completely integrated RF transceiver and processor. It has two main modes of operation: hardware and software. Hardware operation is suitable for applications like keyfobs where no other processor, PC or interface is present.
Transceiver Operation Transmit Operation The transceiver has two modes of operation: Initiating Unit (IU) that transmits control messages and Responding Unit (RU) that receives control messages. If all of the status lines are set as inputs, then the module is set as an IU only. The module stays in a low power sleep mode until a status line goes high, starting the Transmit Operation. Transmit operation can be started by a status line input going high or a serial command.
Receive Operation During Receive Operation, the module waits for a valid control message from an authorized (paired) transceiver. When a valid message is received, it locks onto the hopping pattern of the transmitter and asserts the MODE_ IND line. It compares the received status line states to the Permission Mask for the IU to see if the IU is authorized to activate the lines. The module sets all authorized outputs to match the received states. Only status line outputs are affected by received commands.
The Pair Process Configuring the Status Lines The Pair process enables two transceivers to communicate with each other. Each transceiver has a local 32-bit address that is transmitted with every packet. If the address in the received packet is not in the RU’s Paired Module List, then the transceiver does not respond. Adding devices to the authorized list is accomplished through the Pair process or by a serial command. Each module can be paired with up to 40 other modules.
Mode Indicator Using the LVL_ADJ Line The Mode Indicator line (MODE_IND) provides feedback about the current state of the module. This line switches at different rates depending on the module’s current operation. When an LED is connected to this line it blinks, providing a visual indication to the user. Figure 33 gives the definitions of the MODE_IND timings. The Level Adjust (LVL_ADJ) line allows the transceiver’s output power to be easily adjusted for range control or lower power consumption.
Receiver Duty Cycle The module can be configured to automatically power on and off while in receive mode. Instead of being powered on all the time looking for transmissions from an IU, the receiver can wake up, look for data and go back to sleep for a configurable amount of time. If it wakes up and receives valid data, then it stays on and goes back to sleep when the data stops. This significantly reduces the amount of current consumed by the receiver.
Using the LATCH_EN Line Triggered Transmissions The LATCH_EN line sets the outputs to either momentary operation or latched operation. During momentary operation the outputs go high for as long as control messages are received instructing the module to take the lines high. As soon as the control messages stop, the outputs go low. The HumRCTM Series Transceiver has a triggered transmission feature configured through the serial interface.
Frequency Hopping The module incorporates a Frequency Hopping Spread Spectrum (FHSS) algorithm. This provides immunity from narrow-band interference and complies with FCC and IC guidelines. The module uses 25 RF channels as shown in Figure 38. Each channel has a time slot of 13.33ms before the module hops to the next channel. This equal spacing allows a receiver to hop to the next channel at the correct time even if a packet is missed.
The Command Data Interface The HumRC Series transceiver has a serial Command Data Interface (CDI) that offers the option to configure and control the transceiver through software instead of through hardware. This interface consists of a standard UART with a serial command set. This allows for fewer connections in applications controlled by a microcontroller as well as for more control and advanced features than can be offered through hardware pins alone.
Serial Setup Configuration for Stand-alone Operation Command Data Interface Parameters The serial interface offers access to a number of advanced features that cannot be controlled through hardware configuration alone. However, not all products need or use a microcontroller or processor, but would benefit from some of the advanced features. Parameter Description Device Name NULL-terminated string of up to 16 characters that identifies the module. Read only. Firmware Version 2 byte firmware version.
Basic Hardware Operation VCC The following steps describe how to use the HumRC Series module with hardware only. Basic application circuits that correspond to these steps are shown in Figure 41. TM VCC 21 VCC 22 RESET 24 23 LNA_EN GND PA_EN LATCH_EN POWER_DOWN GND GND 20 GND 19 18 GND 17 GND 16 GND 15 GND 14 GND 13 11 6 5 5. Pressing a status line button on one module (the IU) activates the corresponding status line output on the second module (the RU). C1 S4 12 S5 4.
Typical Applications RXD 22 21 23 24 26 15 14 S3 GND VCC GND VCC GND POWER_DOWN C1 12 C0 10 11 GND13 GND 9 13 5 GND GND VCC 8 VCC S0 12 S4 GND GND VCC 21 VCC 22 16 GNDGND 20 GNDANT 19 GNDGND 18 GNDGND 17 GNDGND 16 GND LATCH_EN RESET LNA_EN 17 GND GND 15 14 GND GND GND GND GND GND 13 23 CMD_DATA_IN ACK_EN 4 S5 18 GND S0 VCC S6 S1 11 VCC 3 GND S2 10 GND 2 S7 7 VCC S4 GND S1 VCC 4 LVL_ADJ 6 GND GND ACK_OUT GND S2 VCC VCC VCC VCC
Usage Guidelines for FCC and IC Compliance Information to the user The pre-certified versions of the HumRCTM Series module (HUM-900-RC-UFL and HUM-900-RC-CAS) are provided with an FCC and Industry Canada Modular Certification. This certification shows that the module meets the requirements of FCC Part 15 and Industry Canada license-exempt RSS standards for an intentional radiator.
Product Labeling The end product containing the HUM-900-RC-UFL or HUM-900-RC-CAS must be labeled to meet the FCC and IC product label requirements. It must have the below or similar text: Contains FCC ID: OJM900MCA / IC: 5840A-900MCA The label must be permanently affixed to the product and readily visible to the user.
14.00mil 1.4mil FR-4 (Er = 4.6) Dielectric 2 28.00mil FR-4 (Er = 4.6) Mid-Layer 2 Dielectric 3 1.4mil 14.00mil Copper FR-4 (Er = 4.6) Copper 380 619 216 Bottom Layer 1.4mil Copper ANT-916-CW-QW ANT-916-CW-HW ANT-916-WRT-RPS Dielectric 1 Mid-Layer 1 Microstrip Width = 24mil Ground plane on Mid-Layer 1 Units are in mils Thickness Material Copper 1.
Power Supply Requirements Interference Considerations Vcc TO MODULE 10Ω Vcc IN + The module does not have an internal voltage regulator, therefore it requires a clean, well-regulated power source. The power supply noise should be less than 20mV. Power supply noise can significantly affect the module’s performance, so providing a clean power supply for the module should be a high priority during design.
Pad Layout Microstrip Details The pad layout diagrams below are designed to facilitate both hand and automated assembly. Figure 49 shows the footprint for the smaller version and Figure 50 shows the footprint for the pre-certified version. A transmission line is a medium whereby RF energy is transferred from one place to another with minimal loss.
Board Layout Guidelines The module’s design makes integration straightforward; however, it is still critical to exercise care in PCB layout. Failure to observe good layout techniques can result in a significant degradation of the module’s performance. A primary layout goal is to maintain a characteristic 50-ohm impedance throughout the path from the antenna to the module. Grounding, filtering, decoupling, routing and PCB stack-up are also important considerations for any RF design.
The module is housed in a hybrid SMD package that supports hand and automated assembly techniques. Since the modules contain discrete components internally, the assembly procedures are critical to ensuring the reliable function of the modules. The following procedures should be reviewed with and practiced by all assembly personnel. Hand Assembly Pads located on the bottom Soldering Iron of the module are the primary Tip mounting surface (Figure 54).
General Antenna Rules The following general rules should help in maximizing antenna performance. 1. Proximity to objects such as a user’s hand, body or metal objects will cause an antenna to detune. For this reason, the antenna shaft and tip should be positioned as far away from such objects as possible. 2. Optimum performance is obtained from a ¼- or ½-wave straight whip mounted at a right angle to the ground plane (Figure 57).
Common Antenna Styles There are hundreds of antenna styles and variations that can be employed with Linx RF modules. Following is a brief discussion of the styles most commonly utilized. Additional antenna information can be found in Linx Application Notes AN-00100, AN-00140, AN-00500 and AN-00501. Linx antennas and connectors offer outstanding performance at a low price. Whip Style A whip style antenna (Figure 60) provides outstanding overall performance and stability.
Regulatory Considerations Note: Linx RF modules are designed as component devices that require external components to function. The purchaser understands that additional approvals may be required prior to the sale or operation of the device, and agrees to utilize the component in keeping with all laws governing its use in the country of operation.
Linx Technologies 159 Ort Lane Merlin, OR, US 97532 Phone: +1 541 471 6256 Fax: +1 541 471 6251 www.linxtechnologies.com Disclaimer Linx Technologies is continually striving to improve the quality and function of its products. For this reason, we reserve the right to make changes to our products without notice. The information contained in this Data Guide is believed to be accurate as of the time of publication. Specifications are based on representative lot samples.
