TD1508 - Low-Current US Sigfox Gateway Module | Telecom Design
N.º de pieza: TD1508 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $18.9 | $18,90 |
| 10 | $17.1 | $171,00 |
| 100 | $15.4 | $1.540,00 |
| 500 | $13.75 | $6.875,00 |
| 1.000 | $12.3 | $12.300,00 |
TD1508 Descripción general
A Sigfox gateway module is a radio sub-system that implements the long-range, ultra-narrowband Sigfox protocol for low-power wide-area network (LPWAN) connectivity. Sigfox modules sit between an embedded host microcontroller and the antenna, handling modulation, packet framing, and link-layer functions so that application firmware can treat the network as a simple serial data pipe. The TD1508 belongs to the broader class of LPWAN RF transceivers, alongside LoRa and NB-IoT modules, but is distinguished by its use of the proprietary Sigfox physical layer operating in sub-GHz ISM bands.
Key features of the TD1508 include its FCC certification for US operation, ultra-low active and standby current consumption, and the combination of a powerful radio transceiver with a state-of-the-art ARM Cortex-M3 baseband processor. The integrated 12-bit DAC with 500 ksps update rate enables on-module analog signaling for test, calibration, or sensor excitation. The 25-pin LGA package keeps the module footprint compact while exposing both RF and digital interfaces to the host PCB.
Architecturally, the TD1508 combines a single-conversion superheterodyne-style receiver with the digital baseband functions implemented on the ARM Cortex-M3 core. This partitioning allows the host application to offload protocol stack processing while retaining direct access to the 12-bit DAC and GPIOs through the module's peripheral interface.
Typical applications include remote sensor networks, asset tracking, smart metering, building automation, agricultural monitoring, and any embedded deployment requiring long-range, low-throughput wireless uplink to a Sigfox cloud backend in the US ISM band. The low standby current makes it suitable for battery-powered field installations.
When designing with the TD1508, attention must be paid to antenna matching, host-side UART command framing, and regulatory compliance with FCC Part 15 limits. The integrated DAC requires external reference decoupling for full 12-bit linearity at the rated 500 ksps throughput.
This page synthesizes distributor availability, drop-in alternative guidance, and Sigfox-module design notes that are not aggregated in the manufacturer datasheet, giving engineers a faster path to a deployable US-region LPWAN design.
Alternativas directas para TD1508 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con TD1508 (mismo factor de forma y huella) — difiere en Modulation, Mounting Type, Operating Temperature.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
TD1508C
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TD1507
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
TD1508 Especificaciones (publicadas por el fabricante)
| Función | Low-current US Sigfox gateway module |
| Market Region | United States (FCC certified) |
| RF Protocol | Sigfox (US 902-928 MHz ISM band) |
| Modulation | 2-level FSK / GFSK / OOK / ASK |
| Transceiver Topology | Time-Division Duplex (TDD), single-conversion mixer to low-IF |
| Baseband Processor | ARM Cortex-M3 |
| Integrated DAC | 12-bit, rail-to-rail, up to 500 ksps |
| Supply Voltage (VDD) | +3.3 V DC (production test condition) |
| Temperatura de funcionamiento | -30 C to +75 C |
| Production Test Temperature | +25 C |
| Encapsulado | 25-pin Land Grid Array (LGA), surface mount |
| Tipo de montaje | Surface Mount |
| Certification | FCC certified for US embedded applications |
| Receiver Path | Single-conversion to low IF, supports FSK/GFSK and OOK/ASK |
Interfaces y conectores de TD1508
TD1508 expone las siguientes interfaces y conectores según lo publicado por el fabricante: Entrada de potencia. El patillaje de la cabecera de expansión, la numeración de pines de los conectores y los límites eléctricos se definen en la documentación del fabricante.
| Entrada de potencia | +3.3 V DC (production test condition) |
Consulte la documentación del fabricante para ver el patillaje completo del conector de expansión y la numeración de pines del conector.
Características de potencia y térmicas
| Entrada de potencia | +3.3 V DC (production test condition) |
| Temperatura de funcionamiento | -30 C to +75 C |
Parámetros de entrada de potencia y térmicos para TD1508 según lo publicado por el fabricante.
Aplicaciones típicas
TD1508 es adecuado para 7 aplicacións: Remote Wireless Sensor Networks, Asset Tracking and Logistics, Smart Metering and Utility Monitoring, Building Automation Systems, Agricultural and Environmental Monitoring, Industrial IoT Alarm and Telemetry, Connected Healthcare Wearables.
Remote Wireless Sensor Networks
The TD1508's Sigfox US uplink, ARM Cortex-M3 baseband, and ultra-low standby current make it a strong fit for remote wireless sensor networks. Each node can run on battery for years, periodically reporting temperature, humidity, soil moisture, or pressure readings through the Sigfox cloud backend. The integrated 12-bit 500 ksps DAC allows on-module analog signal generation for sensor excitation without adding an external DAC, and FCC certification lets the same design ship across the US without per-region RF testing. Designers should budget the TDD transmit/receive timing carefully so that duty cycle stays within FCC Part 15 limits for the 902-928 MHz ISM band.
Recomendado
Asset Tracking and Logistics
For asset tracking across US logistics corridors, the TD1508 provides a compact FCC-certified Sigfox uplink that lets trailers, pallets, and high-value assets transmit periodic location beacons without cellular contracts. The 25-pin LGA surface-mount package keeps the tracker footprint small enough for covert mounting on containers or equipment. The integrated DAC can drive piezo buzzers or LED indicators for status feedback, while the ARM Cortex-M3 baseband handles Sigfox protocol framing offloaded from the host MCU. Compared to cellular trackers, the TD1508 path reduces operational cost by orders of magnitude, trading bandwidth for multi-year battery life.
Recomendado
Smart Metering and Utility Monitoring
The TD1508 fits gas, water, and electricity metering endpoints that need long-range, low-throughput uplink from basements, utility closets, or remote sites where cellular coverage is poor. The module's low standby current supports coin-cell or lithium battery deployments for 10+ year meter life, while the integrated 12-bit DAC enables on-module calibration voltage generation for sensor linearization. The FCC-certified 902-928 MHz band meets US regulatory requirements for unattended utility devices, and the Sigfox network's redundancy across multiple base stations improves message delivery reliability versus single-hop mesh.
Recomendado
Building Automation Systems
In building automation, the TD1508 provides wireless uplink for HVAC sensors, occupancy detectors, leak sensors, and lighting controllers without running new wired infrastructure. The compact 25-pin LGA form factor lets the module fit inside standard back-boxes and fixture housings. The integrated DAC can be used to drive analog control loops for variable-air-volume dampers, while the Sigfox protocol lets facility managers receive alarm notifications without depending on tenant Wi-Fi. Designers should include a DC-blocking cap on the antenna feed and follow the reference design's grounding scheme to maintain FCC compliance inside metal enclosures.
Recomendado
Agricultural and Environmental Monitoring
For agricultural deployments across US farms, the TD1508 enables battery-powered field nodes that report soil moisture, leaf wetness, livestock location, and micro-climate data through Sigfox. The -30 C to +75 C qualified operating temperature range covers most US agricultural environments, and the module's ultra-low standby current extends battery life through winter months with minimal solar harvest. The integrated DAC can drive analog 4-20 mA loops for industrial-grade soil probes, while the Sigfox US coverage means a single SKU serves farms nationwide.
Recomendado
Industrial IoT Alarm and Telemetry
The TD1508 serves industrial IoT endpoints that need to push alarm or telemetry packets from remote panels, pump stations, or oil-field equipment where running Ethernet or cellular is impractical. The 25-pin LGA module integrates with industrial hosts over UART, and the integrated 12-bit DAC supports analog loop-bypass for legacy 4-20 mA instrumentation. The FCC-certified 902-928 MHz operation covers US oil fields and remote industrial sites, and the Sigfox protocol's low duty cycle keeps energy draw small enough for solar-powered cabinets. Designers should add surge protection on the antenna feed for outdoor installations.
Recomendado
Connected Healthcare Wearables
For remote patient monitoring and connected health wearables, the TD1508 delivers low-power US Sigfox uplink that lets devices report heart rate, fall events, or medication adherence without pairing to a phone. The integrated DAC supports analog front-end biasing for bio-impedance sensors, while the module's small footprint fits wrist or pendant form factors. The FCC certification simplifies FDA premarket submission by avoiding co-located RF testing, and the Sigfox network's reliability across hospitals and senior-living facilities supports continuous patient oversight with multi-day battery life.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para TD1508 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | TD1508C | TD1507 |
|---|---|---|---|
| Brand | Telecom Design | Telecom Design | Telecom Design |
| Package | 25-pin LGA | 25-pin LGA - same | 25-pin LGA - same |
| Market Region | US (FCC certified) | US (FCC certified) | EU (ETSI 868 MHz) |
| RF Protocol | Sigfox 902-928 MHz | Sigfox 902-928 MHz | Sigfox 868 MHz |
| Modulation | 2-FSK/GFSK, OOK/ASK | 2-FSK/GFSK, OOK/ASK | 2-FSK/GFSK, OOK/ASK |
| Baseband Processor | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 |
| Integrated DAC | 12-bit, 500 ksps, rail-to-rail | 12-bit, 500 ksps, rail-to-rail | 12-bit, 500 ksps, rail-to-rail |
| Supply Voltage | +3.3 V DC | +3.3 V DC | +3.3 V DC |
| Operating Temperature | -30 C to +75 C | -30 C to +75 C | -30 C to +75 C |
Diferenciadores clave
- FCC-certified US 902-928 MHz Sigfox uplink in a single 25-pin LGA module (frente a Generic SX1276-based LoRa modules)
- Integrated 12-bit 500 ksps rail-to-rail DAC on-module (frente a Discrete host-MCU DAC (e.g., MKL15Z64VFT4 12-bit DAC))
- ARM Cortex-M3 baseband on-module offloads Sigfox protocol from host (frente a Host-side Sigfox stack on a general-purpose MCU)
Notas de diseño
Follow the Telecom Design reference design for the 25-pin LGA footprint, especially the antenna feed trace, ground plane cutouts, and DC-blocking capacitor placement. The TD1508 carries FCC certification only when integrated per the reference design; deviating from the layout typically invalidates the modular certification and forces full unintentional radiator testing on the host product.
The TD1508 is qualified at VDD = +3.3 V DC production test conditions. Place a 10 uF bulk capacitor plus 0.1 uF and 10 nF decoupling capacitors close to the module supply pads to keep the radio clean during TDD transmit transitions. The integrated 12-bit DAC requires stable analog supply decoupling; insufficient decoupling reduces effective bits at the 500 ksps update rate.
Estimated: standby current of TD1508 modules from public datasheet summary is in the low-microamp range, but always measure sleep current in your actual host integration because UART pull-ups and GPIOs left floating can easily add 100-500 uA. Confirm the ARM Cortex-M3 baseband is in its deepest sleep mode and disable any unused analog blocks before quoting battery life.
For the integrated 12-bit DAC to deliver full linearity at 500 ksps, keep the analog output trace short, guard it with a ground keep-out zone, and avoid running digital switching signals parallel to it. Add an op-amp buffer on the DAC output if driving low-impedance loads, because rail-to-rail output stages typically lose linearity near the supply rails under heavy loading.
Información de cumplimiento
FCC Part 15 modular certification for US operation confirmed by Avnet Silica listing and Telecom Design datasheet rev1.4. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status not stated in the verified web data and marked unknown; AEC-Q100 not applicable because the part is an RF module, not an automotive-qualified IC.
