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STM32WL55CCU6 - Dual-core Arm Cortex-M4/M0+ LoRa SoC | STMicroelectronics
The STMicroelectronics STM32WL55CCU6 is a wireless system-on-chip (SoC) that integrates a dual-core Arm Cortex-M4 and Cortex-M0+ processor with a sub-GHz radio supporting LoRa, (G)FSK, (G)MSK, and BPSK modulations. It is housed in a 48-pin UFQFPN package (7x7 mm) and operates over a supply voltage range of 1.8V to 3.6V. The device features 256 KB of flash memory and 64 KB of SRAM, making it suitable for battery-powered IoT applications. A wireless MCU is a microcontroller that integrates a radio transceiver on the same chip, enabling wireless communication without external RF components. The STM32WL55CCU6 belongs to the STM32WL series, which is part of the broader STM32 family of 32-bit microcontrollers. This SoC combines the processing power of an Arm Cortex-M4 core with the energy efficiency of a Cortex-M0+ core, allowing for flexible task partitioning and low-power operation. Key features include a maximum CPU frequency of 48 MHz for both cores, a sub-GHz radio with sensitivity down to -137 dBm (LoRa), and support for LoRaWAN and Sigfox protocols. The device also includes a rich set of peripherals such as 12-bit ADC, DAC, comparators, timers, SPI, I2C, USART, and a random number generator. The integrated radio eliminates the need for an external transceiver, reducing BOM cost and PCB area. The STM32WL55CCU6 is built on ST's low-power process technology, offering multiple low-power modes including Sleep, Stop, and Standby, with current consumption as low as 1.62 uA in Standby mode with RTC. The dual-core architecture allows the Cortex-M0+ to handle radio communication while the Cortex-M4 runs application code, optimizing power and performance. Typical applications include smart agriculture sensors, smart metering, asset tracking, smart city infrastructure, and industrial monitoring. The sub-GHz radio provides long-range communication with low power consumption, making it ideal for battery-operated devices that need to transmit data over kilometers. When designing with this device, ensure proper antenna matching and RF layout to achieve optimal radio performance. The device supports a wide operating temperature range of -40C to +85C, suitable for outdoor and industrial environments.
STM32WL55JCI6 - Dual-Core LoRa SoC 150-960MHz | ST
The STMicroelectronics STM32WL55JCI6 is a dual-core (Arm Cortex-M4 + Cortex-M0+) multiprotocol LPWAN wireless SoC with 256 KB flash, 64 KB SRAM, and an integrated sub-GHz radio covering 150 MHz to 960 MHz, housed in a 73-pin UFBGA package (7x7 mm). A wireless MCU (microcontroller unit) is a single-chip solution combining a processor core with a radio transceiver, sitting within the hierarchy: wireless SoC -> microcontroller (MCU) -> embedded processor -> semiconductor. The STM32WL55JCI6 belongs to the STM32WL family within the broader STM32 portfolio from STMicroelectronics, integrating the radio and application processor in one device to reduce board space, bill-of-materials cost, and design complexity compared with discrete MCU-plus-radio solutions. Key features include a 64 MHz Cortex-M4 application core with FPU and DSP instructions, a 48 MHz Cortex-M0+ core dedicated to radio protocol management, and support for LoRa, (G)FSK, (G)MSK, and BPSK modulations with LoRaWAN 1.0, Sigfox, and 802.15.4 protocol stacks. Radio sensitivity reaches -137 dBm and output power up to +22 dBm, enabling multi-kilometer links in open field. Technically, the device uses a low-power process with multiple power modes: Standby current is as low as 1.62 uA with RTC running, RX current is 4.82 mA, and TX current is 87 mA at +14 dBm. Peripherals include a 12-bit ADC, DAC, comparators, op-amps, multiple UART/SPI/I2C interfaces, and a true random number generator (TRNG) for security. Supply voltage spans 1.8V to 3.6V over -40C to +85C. Typical applications are smart agriculture sensors, smart metering (gas, water, electricity), asset tracking, industrial monitoring, and smart-city LPWAN infrastructure, where long range and battery life dominate requirements. Design tip: let the M0+ core run the radio stack while the M4 runs application code, and invest early in antenna matching and RF layout; use the STM32CubeWL package for rapid development. This page adds value beyond the datasheet by synthesizing distributor pricing, drop-in same-package alternatives, design notes, and an AEO-optimized FAQ for AI search citation.
STM32WLE5C8 - 32-bit Arm Cortex-M4 LoRa SoC | STMicroelectronics
The STM32WLE5C8 is a 32-bit Arm Cortex-M4 microcontroller with integrated LoRa transceiver from STMicroelectronics, designed for long-range, low-power wireless applications. It operates at a maximum CPU frequency of 48 MHz and features 256 KB of flash memory and 64 KB of SRAM. The device is housed in a 48-pin UFQFPN package (7x7 mm) and supports a supply voltage range of 1.8V to 3.6V. A microcontroller unit (MCU) is a compact integrated circuit designed to govern a specific operation in an embedded system. It contains a processor core, memory, and programmable input/output peripherals. The STM32WLE5C8 belongs to the STM32WL family, which combines an MCU with a sub-GHz radio transceiver, enabling single-chip solutions for IoT devices. This integration reduces system cost and board space compared to discrete MCU and radio implementations. Key features of the STM32WLE5C8 include an Arm Cortex-M4 core with FPU, a LoRa transceiver supporting frequencies from 150 MHz to 960 MHz, and a sensitivity of -123 dBm. It also offers multiple low-power modes, including Sleep, Stop, and Standby, with a typical current consumption of 1.4 uA in Standby mode. The device includes a 12-bit ADC, multiple timers, and communication interfaces such as SPI, I2C, and USART. The STM32WLE5C8 is built on STMicroelectronics' ultra-low-power technology, featuring a dynamic current consumption of 4.6 mA in active mode at 48 MHz. The integrated LoRa transceiver provides a link budget of up to 151 dB, enabling reliable communication over several kilometers in open field conditions. The device also supports FSK, GFSK, MSK, GMSK, and BPSK modulations, offering flexibility for various wireless protocols. Typical applications include smart agriculture, asset tracking, smart metering, and industrial IoT. The device's long-range capability and low power consumption make it ideal for battery-powered sensors that require years of operation. In smart agriculture, the STM32WLE5C8 can monitor soil moisture and transmit data over LoRaWAN networks, while in asset tracking, it can provide real-time location updates with minimal energy usage. When designing with the STM32WLE5C8, ensure proper antenna matching and RF layout to achieve optimal radio performance. The device requires a 32 MHz crystal for the radio and a 32.768 kHz crystal for the RTC. Use the STM32CubeWL software package for rapid development, which includes drivers, middleware, and examples for LoRaWAN and point-to-point communication.
STM32WLE5J8I6 - LoRa Sub-GHz Wireless MCU 64KB | STMicroelectronics
The STMicroelectronics STM32WLE5J8I6 is a multiprotocol LPWAN wireless microcontroller unit integrating an Arm Cortex-M4 core running at 48 MHz, a 64 KB flash memory, 20 KB SRAM, and a sub-GHz radio transceiver covering 150 MHz to 960 MHz, all housed in a 73-ball UFBGA package. A wireless MCU (microcontroller unit) is a single-chip device that combines a general-purpose processor with a radio transceiver, eliminating the need for a separate RF IC. Within the power/semiconductor hierarchy, the STM32WLE5J8I6 sits under the STM32WL series, which belongs to the 32-bit Arm Cortex-M4 microcontroller family, the wireless MCU category, and the broader semiconductor device ecosystem for long-range IoT connectivity. Key differentiating features include support for LoRa, (G)FSK, (G)MSK, and BPSK modulation schemes, an ultra-low-power architecture engineered for battery-powered LPWAN nodes, and a supply voltage range of 1.8 V to 3.6 V. Single-chip integration of the Cortex-M4 CPU, SRAM, flash, and sub-GHz radio reduces BOM count, board area, and RF design complexity compared with two-chip MCU-plus-transceiver solutions. Architecturally, the STM32WLE5J8I6 belongs to the STM32WLE5xx/STM32WLE4xx family, which scales flash capacity up to 256 KB and SRAM up to 64 KB across package variants. The radio subsystem supports the physical layers required by LoRaWAN and proprietary sub-GHz protocols, while the Cortex-M4 core handles protocol stacks, sensor interfacing, and application logic at 48 MHz with low dynamic power consumption. Typical applications include LoRaWAN smart meters, industrial sensor nodes, smart agriculture monitoring, building automation, and asset-tracking devices. The ultra-low-power design and integrated radio make it particularly well suited to battery-powered nodes where a 10+ year operating life is a design requirement. A key design consideration: as with any sub-GHz radio MCU, RF matching network layout and crystal placement dominate radio performance; the 73-ball UFBGA package requires careful PCB stack-up planning for RF routing on inner layers, and the industrial temperature grade (denoted by the I suffix) must be matched to the deployed environment. This page synthesizes distributor pricing, drop-in family alternatives, practical design notes, and AEO-optimized specifications not consolidated in the manufacturer datasheet.
SWA70-CA2A2A1 - WirelessHART Adapter, 4-20mA/HART to Wireless | Endress+Hauser
The Endress+Hauser SWA70-CA2A2A1 is a WirelessHART Adapter module from the SWA70 family that wirelessly transmits 4 to 20 mA and HART signals from connected field devices to a WirelessHART Fieldgate (gateway). It functions as an add-on interface module that retrofits wired 4-20 mA/HART instruments with wireless connectivity, powered by either a battery pack or an external power supply unit. The SWA70-CA2A2A1 configuration supports hazardous and non-hazardous area deployments in process automation plants. A WirelessHART Adapter is an industrial wireless interface module that bridges legacy wired HART field instruments onto a WirelessHART mesh network. HART (Highway Addressable Remote Transducer) is the global standard for 4-20 mA smart instrumentation, combining analog signaling with a digital HART protocol. WirelessHART extends this standard to IEC 62591 (HART over IEEE 802.15.4 radio at 2.4 GHz with TDMA mesh), enabling battery-powered wireless monitoring of pressure, temperature, flow, level, and analytical measurements without running new cabling. Key features of the SWA70 WirelessHART Adapter family include dual power options (replaceable battery pack and 24 V DC power supply unit), intrinsic safety variants for hazardous areas, robust IP66/IP67 housing for outdoor mounting, and seamless integration with Endress+Hauser Fieldgate gateways. The adapter retains all HART diagnostic and configuration data while adding wireless transmission, allowing plant operators to extend visibility into remote or hard-to-reach measurement points. Radio output is 10 dBm EIRP typical on the 2.4 GHz ISM band with mesh self-healing routing. The SWA70-CA2A2A1 incorporates industrial-grade EMC and surge protection, conformal-coated electronics, and a wide operating temperature range suitable for chemical, oil & gas, water & wastewater, and power plant environments. Its internal mesh radio (IEEE 802.15.4 PHY, WirelessHART MAC) handles time-synchronized channel hopping, AES-128 encryption, and join/authentication to a WirelessHART network manager. Compared with proprietary wireless sensor networks, WirelessHART interoperability ensures the SWA70 communicates with any IEC 62591-compliant gateway. Typical applications include retrofitting 4-20 mA level gauges in storage tanks, monitoring pressure transmitters along pipelines without trenching signal cables, connecting HART valves and analytical instruments to plant DCS systems, and adding wireless backup to critical measurement loops in chemical plants. Battery-powered operation enables unattended deployment for years, while power-supply operation supports continuous high-update-rate streaming of HART variables including PV, SV, TV, QV and device diagnostics. Design considerations when deploying the SWA70-CA2A2A1 include antenna placement for line-of-sight or near-line-of-sight mesh coverage, calculation of battery life based on update rate (faster updates drain battery quicker), and verification of hazardous-area certification matches the installed zone. The adapter mounts directly on or near the wired HART device with a short stub cable carrying the 4-20 mA loop and HART signal. This page synthesizes distributor pricing, configuration options, and application guidance beyond what the manufacturer's datasheet alone provides, helping engineers select the correct SWA70 option code for their process automation project.
SX1276MB1MAS - LoRa 433/868MHz Mbed Shield | Semtech
The Semtech SX1276MB1MAS is a LoRa Connect Mbed shield development board featuring the SX1276 sub-GHz LoRa transceiver, configured for the 433 MHz (LF) or 868 MHz (HF) ISM bands, with a U.FL antenna connector (antenna not included) and a through-hole shield form factor. A sub-GHz RF transceiver module is a radio device that transmits and receives data in the license-free frequency bands below 1 GHz. Within the wireless connectivity hierarchy, it belongs to the category of ISM-band transceivers, which sits under RF transceivers, RF and wireless components, and semiconductors. The SX1276 device on this shield implements LoRa (Long Range) spread-spectrum modulation, the leading LPWAN physical-layer technology. Key features include the SX1276 LoRa modem with ultra-long-range spread-spectrum communication, dual-band 433 MHz and 868 MHz configuration, LoRa modulation with high interference immunity, and a standard Mbed-compatible shield format for rapid prototyping with Mbed-enabled microcontroller boards. The U.FL (MHF) connector allows connection of an external antenna matched to the selected band. Technically, the SX1276 integrates the LoRa modem plus a high-performance FSK/OOK modem in a single device, covering 137 MHz to 1020 MHz, with low active and sleep current consumption suited to battery-powered long-range links. The shield exposes the transceiver through the Mbed shield connector (SPI interface), letting developers evaluate LoRa link budgets, range, and modulation settings before committing to a custom PCB. Typical applications include LPWAN node prototyping, smart agriculture and smart city sensor links, industrial telemetry, and long-range IoT gateways in the 433 MHz and 868 MHz ISM bands. Design consideration: always attach a correctly tuned 433 MHz or 868 MHz antenna before transmitting; operating the SX1276 into an unmatched or absent load can stress the PA output stage. This page synthesizes distributor pricing, related-module alternatives, and practical design notes not found in the manufacturer product page. Pricing references are as of 2026-10-19.
Si475x (SI4750-A10) - Automotive AM/FM Radio Receiver | Skyworks
The Skyworks (Silicon Laboratories) Si475x family, exemplified by the SI4750-A10, is a high-performance automotive-grade AM/FM radio receiver IC implemented in 100% RF CMOS, supporting worldwide FM (64 MHz to 108 MHz), AM (520 kHz to 1.71 MHz), shortwave, longwave, and weatherband reception in a 32-pin VFQFN (5x5 mm) exposed-pad package. An integrated radio receiver IC combines the RF front end, mixer, IF filtering, demodulation, and audio processing on a single silicon die. Within the signal-chain hierarchy, it sits between the antenna and the audio amplifier, replacing discrete tuner modules with a single-chip CMOS solution. The Si475x provides a fully integrated tuner solution from antenna input to audio output, making it suitable as the primary tuner in entry- and mid-level car radios. Key features include automotive-quality receiver performance from RF CMOS technology, support for worldwide broadcast bands (FM, AM, SW, LW, weatherband), a minimal external bill of materials that reduces board space, and integrated audio output that removes the need for separate stereo decoder circuitry. Technically, the Si475x digitizes the received signal early in the chain and performs channel filtering, demodulation, and audio processing digitally, which gives it consistent performance across units and immunity to the alignment drift typical of discrete analog tuners. The CMOS integration also lowers cost and power compared with multi-chip tuner modules. Typical applications include automotive infotainment head units, entry-level car radios, and aftermarket audio systems requiring broadcast radio reception across global markets. A key design consideration is the exposed-pad QFN package: the thermal pad must be soldered to a grounded copper pour for reliable RF grounding and heat dissipation. This page synthesizes distributor pricing context, drop-in family alternatives, and practical design notes not found in the manufacturer short-form datasheet. Prices cited are as of 2026-10-10.
Si476x - Automotive AM/FM HD Radio Receiver IC | Skyworks
The Skyworks Solutions Si476x (Si476) is a high-performance automotive AM/FM radio receiver and HD Radio (HDR) tuner IC fabricated in 100% RF CMOS technology, supporting worldwide FM reception from 64 MHz to 108 MHz and worldwide AM reception from 520 kHz to 1.71 MHz, housed in a 40-pin QFN (6x6 mm) surface-mount package. An integrated radio receiver IC combines the RF front end, mixed-signal processing, and audio processing of a traditional discrete radio tuner into a single chip. Within the signal-chain hierarchy, the Si476x sits at the tuner stage of the receiver subsystem, feeding demodulated audio and digital radio data to a host processor. The family belongs to the broader category of RF receiver ICs and automotive infotainment semiconductors. Key features of the Si476x include worldwide FM band support (64-108 MHz), worldwide AM band support, and AM/FM HD Radio (HDR) support. Additional variants extend coverage to weather band, shortwave, and longwave frequencies, and dual-antenna FM phase diversity reception for improved multipath rejection in challenging automotive environments. Technical depth: the Si476x incorporates an integrated digital processor for the European Radio Data System (RDS) and the North American Radio Broadcast Data System (RBDS), including all required symbol decoding, block synchronization, and error checking in hardware. This offloads the host MCU from real-time data broadcast decoding. The all-CMOS integration eliminates manual alignment, reducing manufacturing cost and improving long-term frequency stability compared with discrete tuner architectures. Typical applications include automotive head units and infotainment systems, HD Radio broadcast reception, RDS/RBDS-enabled car radios, and weather-band receivers. The automotive-grade performance targets OEM infotainment platforms that demand high receiver quality under noisy vehicle electrical environments. Design consideration: the device requires three supply rails - analog 5 V (VA), digital 3.3 V (VD), and separate interface supply rails (VIO1/VIO2) - so power-rail sequencing and decoupling must be planned early in the PCB design. This page synthesizes distributor data, same-family drop-in variants, and practical design notes not found in the manufacturer datasheet.
T5577 - 125 kHz Read/Write LF RFID IDIC | Microchip Technology
The Microchip Technology (formerly Atmel) T5577 (ATA5577C) is a contactless read/write identification IC (IDIC) operating in the 100 to 150 kHz LF RFID band. The T5577 is housed in a wafer-level chip-scale package (WLCSP die), powered and communicated with through a single external coil that doubles as the antenna, energy harvesting element, and bidirectional data interface. The chip integrates 1 kbit of EEPROM organized into blocks plus dedicated config pages, and supports EM4100/EM4200, HID Prox, T5557, and several other 125 kHz protocols via configurable modulation and bit-rate settings. An LF RFID IDIC (Low-Frequency Identification Integrated Circuit) is a passive transponder IC designed for short-range (typically 5–15 cm) contactless identification. The reader/base station energizes the transponder's coil with an RF field; the transponder harvests energy from that field, clock-recovery locks onto the field frequency, and back-scatters or amplitude-modulates its data back to the reader. The 100–150 kHz band is the de-facto standard for legacy access control, animal tagging, parking systems, and hotel locks, balancing coil size against read range. Key features of the T5577 include 100 to 150 kHz carrier compatibility, 1 kbit (128 byte) on-chip EEPROM with block write protection, selectable bit rates and modulation schemes (ASK, FSK, PSK), a 32-bit unique ID, and password-protected write modes. The chip is fully backward-compatible with the T5557/E5551 register map, simplifying migration of legacy T5557 designs. A built-in high-Q antenna tolerance and adaptive resonant capacitor help designers build coils with loose tolerances. Architecturally, the T5577 contains a high-efficiency rectifier, voltage limiter, field-clock recovery block, EEPROM array, modulator, and digital state machine all on a single die. Programming is performed via downlink commands encoded as 100% OOK pulse-interval bit streams, and uplink data is sent back via load modulation (resistive and capacitive options supported). The wide Q-factor tolerance reduces BOM cost because customers can wind coils with less precision. Typical applications include writable access control cards and key fobs, hotel guest-key credentials, parking lot long-range readers, industrial asset tagging, pet/animal identification, laundry and waste-management tokens, and multi-protocol card emulators used by integrators needing EM4100/EM4200/HID compatibility. Compared to a write-locked EM4100, the T5577 trades a single fixed ID for a flexible multi-protocol, password-protected writable credential that can emulate many existing formats from the same silicon. When designing with the T5577, take care to keep the resonant LC tank within the chip's recommended Q range to maximize read distance; a too-high Q narrows bandwidth and reduces data reliability, while a too-low Q wastes energy. Adding a free-wheel rectifier diode and a current-limiting resistor on the coil input is good practice to survive nearby readers operating at full RF power. This page synthesizes verified distributor pricing, multi-protocol feature analysis, and practical design notes that go beyond the manufacturer datasheet's individual parameter tables.
TAMP-362LN+ - 3.3-3.6 GHz SMT Low Noise Amplifier | Mini-Circuits
The Mini-Circuits TAMP-362LN+ is a surface-mount low noise amplifier (LNA) covering 3300 to 3600 MHz in a 50 Ω shielded module measuring 0.591" x 0.394" x 0.118". It delivers an ultra-low 0.9 dB typical noise figure with 12 dB gain and 1.3:1 typical VSWR, while drawing only 20 mA from a single +5 V supply. A low-noise amplifier (LNA) is a specialized RF amplifier placed at the very front end of a receiver chain to add the least possible noise to a weak incoming signal before subsequent gain stages. LNAs sit within the broader taxonomy of RF amplifier -> amplifier IC/module -> RF & microwave -> active semiconductor device. Their position immediately after the antenna makes their noise figure the dominant contributor to the receiver's overall noise performance, so a sub-1 dB NF is the key figure of merit for 3.3-3.6 GHz sub-6 GHz radios. The TAMP-362LN+ utilizes advanced HJ-FET (Heterojunction Field-Effect Transistor) technology in a single-stage topology, packaged in a drop-in shielded case that requires no external matching components. Its high output IP3 provides strong linearity for handling modulated signals such as LTE, 5G NR n78, and Wi-Fi 6E carriers. The integrated bias and stabilization networks simplify PCB layout and reduce the bill of materials compared with discrete LNA designs. Typical applications include 3.5 GHz fixed wireless access (FWA), small-cell base-station receiver front ends, satellite communications L-band block-converter IF chains, and public-safety / WiMAX infrastructure. The module's compact shielded footprint also supports phased-array and MIMO radio designs where board area is at a premium. When designing with the TAMP-362LN+, follow Mini-Circuits' recommended PCB land pattern and place decoupling capacitors close to the DC feed pin to preserve stability. Ensure the 50 Ω interconnect transitions are kept short and impedance-controlled to avoid degrading the 1.3:1 VSWR specification. This product page synthesizes distributor inventory, drop-in LNA alternatives in the same footprint, and practical RF front-end design notes that supplement the manufacturer datasheet.
TB-TAMP-362LN+ SMT Low Noise Amplifier, 3.3-3.6 GHz | Mini-Circuits
The Mini-Circuits TAMP-362LN+ is an SMT low-noise amplifier (LNA) module covering 3.3 GHz to 3.6 GHz with a typical noise figure of 0.9 dB and 12 dB gain, housed in a shielded drop-in case measuring 0.591 x 0.394 x 0.118 inches. The device operates from a single +5 V supply drawing only 20 mA, eliminating the need for external matching components and simplifying PCB integration. An RF low-noise amplifier (LNA) is a specialized active component that boosts very small antenna-received signals with minimal added noise, establishing the noise floor of the entire receive chain. LNAs belong to the broader category of RF amplifier ICs/modules, which sit in the signal chain hierarchy of antenna -> LNA -> filter -> mixer -> IF/baseband. Mini-Circuits is a leading supplier of drop-in coaxial and SMT amplifier modules that integrate bias, matching, and stabilization into a single shielded package. The TAMP-362LN+ utilizes HJ-FET (Hetero-Junction FET) technology in a single-stage topology, achieving 0.9 dB typical noise figure, 12 dB gain with +/-0.4 to +/-0.8 dB gain flatness across the band, and 1.3:1 typical VSWR for both input and output. Output P1dB is 7 dBm to 11 dBm, making the device suitable as a first-stage receive amplifier in front of a moderate-IP3 mixer. The integrated shielded case eliminates the need for external RF matching networks, allowing engineers to drop the part onto a 50 ohm microstrip trace and supply +5 V through a single bias pin. The low 20 mA quiescent current eases DC budget constraints in remote radio heads, small cells, and satellite terminals where thermal management is critical. Typical applications include 3.5 GHz WiMAX front ends, CBRS (Citizens Broadband Radio Service) infrastructure, small-cell and femtocell receivers, point-to-point microwave links, and satellite communication LNBs operating in the 3.3 to 3.6 GHz band. When laying out the PCB, place the amplifier as close to the antenna/filter as possible to preserve noise figure, and use 50 ohm controlled-impedance traces on both RF pins.
TD1204 - Sigfox/GPS Module with 3D Accelerometer | Telecom Design
The Telecom Design TD1204 is a high-performance, low-current SIGFOX gateway and GPS receiver module that combines a sub-GHz RF transceiver with a multi-GNSS (GPS/GLONASS) receiver and an integrated ultra-low-power 3D accelerometer, delivered in a compact surface-mount module form factor. It is specified for SIGFOX bidirectional communication in the RCZ1 (868 MHz) band and for multi-GNSS geolocation, with embedded motion and free-fall detection to extend the application range into asset tracking, telematics, and sensor network edge nodes. The module exposes analog and digital interfaces (UART, SPI, I2C, ADC, GPIO) so that any host MCU can interconnect to peripherals with minimal external glue. A SIGFOX module is a pre-certified radio transceiver that implements the SIGFOX ultra-narrow-band (UNB) low-power wide-area network (LPWAN) protocol, allowing battery-powered end devices to transmit short telemetry packets over kilometers of range to base stations. Within the broader wireless hierarchy, SIGFOX sits alongside LoRa and NB-IoT as an LPWAN technology, while GPS represents the global navigation satellite system (GNSS) used for absolute geolocation; the TD1204 fuses both radios in one module to enable asset-tracking applications that need both uplink telemetry and position reporting. Key features include SIGFOX Ready Class 0 certification, integrated multi-GNSS receiver, on-board 3D accelerometer with motion and free-fall interrupts, ARM Cortex-M3 microcontroller core for application firmware, and ultra-low-power sleep modes designed for multi-year battery operation. The wide range of analog and digital interfaces (10-bit ADC, PWM timers, UART/SPI/I2C buses, GPIO) makes it easy to interconnect any external sensor cluster. Typical applications include GPS-tracked asset monitoring (containers, trailers, pallets), fleet management telemetry, livestock and pet trackers, environmental sensor networks, anti-theft vehicle alarms, and remote metering. The combination of SIGFOX uplink, GNSS positioning, and accelerometer-based wake-on-motion allows designers to build event-driven trackers that minimize average power consumption while preserving sub-50 m positional accuracy outdoors. When designing with the TD1204, plan the antenna layout carefully: a tuned 50 ohm trace or chip antenna for 868 MHz plus a separate active or passive GNSS antenna is required. Account for cold-start TTFF (time to first fix) of the GNSS receiver and ensure the host MCU has enough flash for SIGFOX ID, payload codec, and any application-layer encryption. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for sourcing, designing in, and qualifying the TD1204.
TD1205 - Sigfox RF Module | TD next | Low-Power IoT
The TD1205 is a Sigfox-certified RF transceiver module from TD next (Telecom Design) designed for ultra-low-power IoT wireless connectivity in the sub-GHz European (868 MHz) and global ISM bands. The module integrates a high-performance Sigfox modem, an STM32-based microcontroller, and a TCXO reference, delivering certified wireless uplink/downlink capability with extremely low sleep current for battery-powered deployments. A Sigfox module is a pre-certified radio module that implements the Sigfox Low-Power Wide Area Network (LPWAN) protocol, sitting in the connectivity hierarchy below Wi-Fi, cellular LTE-M/NB-IoT, and LoRa. Sigfox uses ultra-narrow-band (UNB) modulation in the sub-1 GHz ISM band, delivering very low power consumption and long range (typically 1-10 km outdoor) at very low data rates (~100 bps). This makes it ideal for applications that only need to transmit small packets infrequently, such as asset tracking, metering, and environmental sensing. Key features include Sigfox Ready Class 0 certification, integrated STM32L0 microcontroller, ARM Cortex-M0+ core with embedded TCXO for precise timing, true hardware crypto accelerators, and an ultra-low standby current that allows multi-year battery operation. The module exposes UART, SPI, and I2C peripherals for host microcontroller integration, and includes on-board firmware providing a Sigfox-compliant AT-command interface. Architecturally, the TD1205 packs the RF front-end, baseband modem, microcontroller, power management, and TCXO into a compact LGA-style surface-mount module. The TCXO eliminates the need for an external reference and supports both RC1 (Europe) and RC2 (US/Japan) regional Sigfox profiles. The firmware supports downlink reception, accelerated firmware updates via serial bootloader, and a built-in API for integration with cloud platforms. Typical applications include battery-operated wireless sensors (temperature, leak, smoke detectors), asset tracking and cold-chain monitoring, smart metering (water, gas, electricity), industrial predictive maintenance, and connected agriculture deployments where cellular coverage is unavailable or monthly subscription fees are uneconomical. When designing with the TD1205, account for the duty-cycle restriction inherent to the Sigfox protocol: a maximum of 140 uplink messages per device per day, each limited to 12 bytes of payload. Plan battery sizing accordingly. Use an external SMA or PCB antenna matched to the regional band, and ensure the host MCU firmware respects Sigfox downlink windows to avoid violating regional regulations. This page synthesizes verified distributor pricing, drop-in module alternatives, and practical design notes not found in the manufacturer datasheet, accelerating engineering evaluation.
TD1207 - Sigfox RF Transceiver Module, Sub-GHz 868/902 MHz
The TD1207 is a sub-GHz RF transceiver module manufactured by Telecom Design / TD next for Sigfox wireless connectivity. It operates in the 868 MHz (Europe) and 902 MHz (North America) ISM bands and integrates an ARM Cortex-M3 baseband processor with a high-performance radio transceiver in a compact surface-mount module. The module supports Sigfox protocol operation with -126 dBm typical RX sensitivity and up to +14 dBm TX output power, delivering multi-kilometer range for low-data-rate IoT uplink and downlink messages. A Sigfox module is a pre-certified wireless module that bundles a radio transceiver, microcontroller, RF matching network, and protocol firmware into a single tested assembly. Sigfox modules belong to the broader category of Low-Power Wide-Area Network (LPWAN) modules, sitting beneath the LPWAN hierarchy alongside LoRa and NB-IoT; they are designed for ultra-narrowband, sub-1 GHz transmission of small messages at very low average power, enabling battery-powered devices that operate for years on a single cell. Key features of the TD1207 include an integrated ARM Cortex-M3 core, ultra-low active and standby current consumption, automatic packet handling with Sigfox protocol stack pre-loaded, and an AT-command serial interface for external host control. The device operates from a single 3.3 V supply, exposes UART, SPI, and GPIO interfaces for sensor or host connectivity, and includes an SMA-ready RF port footprint for antenna integration. Firmware updates are supported via a documented bootloader interface described in the TD1207 Reference Manual. Architecturally the module separates the analog RF front-end, which performs modulation and demodulation, from the digital Cortex-M3 baseband, which executes the Sigfox protocol and exposes the AT command interpreter. This split keeps the analog path optimized for noise figure while letting firmware upgrades enhance protocol support without silicon changes, a notable advantage over hard-wired transceivers that require silicon revs for protocol updates. Typical applications include battery-powered environmental sensors, smart metering, asset tracking, alarm and event reporting, and agricultural monitoring nodes. For designs that need BLE for provisioning or higher throughput, the related TD1208 (BLE+Sigfox) module is worth evaluating. When designing with the TD1207, ensure the host provides a stable 3.3 V rail and follows the antenna placement guidance in the EVB user's guide to maintain RX sensitivity. For designs that require a verified Nordic equivalent for dual-radio BLE+Sigfox operation, the TD1208 is the recommended alternative from the same vendor.
TD1508 - Low-Current US Sigfox Gateway Module | Telecom Design
The Telecom Design TD1508 is a low-current US-market Sigfox gateway module that integrates a high-performance radio transceiver with an ARM Cortex-M3 baseband processor for embedded applications. The TD1508 operates as a time-division duplexing (TDD) transceiver that alternately transmits and receives data packets, using a single-conversion mixer to downconvert the 2-level FSK/GFSK or OOK/ASK modulated receive signal to a low-IF frequency. The module provides an interface to an integrated DAC that converts a digital value to a fully rail-to-rail analog output voltage with 12-bit resolution at up to 500 ksps. Qualified for operation from -30 C to +75 C, the TD1508 is a surface-mount 25-pin Land Grid Array (LGA) module with FCC certification for US Sigfox deployments. 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.
TDA18214AHN - Silicon Tuner IC for DVB-T/C TV | NXP
The NXP TDA18214AHN is a high-performance silicon tuner IC designed for digital terrestrial (DVB-T) and digital cable TV reception, housed in a 40-pin HVQFN (6x6 mm) package, controlled via an I2C interface, and delivering a Low IF (LIF) output signal to an external demodulator. A silicon tuner is an integrated RF receiver front-end that replaces traditional can-type tuners. It sits within the signal chain of antenna / RF amplifier, tuner, demodulator, decoder, and display subsystem. By integrating the RF gain stages, mixer, synthesizer, and IF filtering onto a single CMOS or BiCMOS die, silicon tuners reduce BOM count, board area, and assembly cost compared with discrete varactor-tuned designs, while supporting computer-controlled frequency selection over a standard two-wire bus. Key features of the TDA18214 family include support for all digital TV standards (DVB-T, DVB-C, and related regional variants), a Low IF architecture that simplifies demodulator interfacing, and I2C bus control for channel selection and register configuration. The single-conversion architecture with integrated frequency synthesizer provides stable, crystal-referenced tuning across the terrestrial and cable RF bands. Architecturally, the TDA18214AHN combines a low-noise RF input stage, gain-controlled amplifiers, an image-reject mixer, and on-chip IF filtering and gain. The Low IF output is DC-coupled or AC-coupled to companion demodulators, with the demodulator providing downstream equalization and error correction. Typical applications include set-top boxes for terrestrial and cable reception, integrated digital TV (iDTV) tuners, and PC TV tuner cards or USB TV sticks. A key design consideration is supply decoupling of the analog RF supply rails and careful PCB layout of the 50-ohm RF input path to preserve noise figure; the HVQFN-40 exposed-pad package requires a well-soldered thermal ground pad. This page adds distributor sourcing data, drop-in family alternatives, and practical design notes not found in the NXP datasheet.
TDA18214AHN/C2/S1557 - Silicon Tuner DVB-T HVQFN-40 | NXP
The NXP Semiconductors TDA18214AHN/C2/S1557 is a high-performance silicon tuner IC for digital terrestrial and digital cable TV reception, delivering a Low IF (LIF) output signal to a demodulator, with a tunable RF input range up to approximately 1.002 GHz, I2C bus control, and a 40-pin HVQFN (6x6 mm) package with exposed pad. A silicon tuner is a single-chip RF receiver that replaces the traditional multi-component can tuner in television and set-top-box designs. It integrates the RF front-end functions - low-noise amplifier, mixer, frequency synthesizer, and IF signal processing - into one semiconductor device, sitting within the RF receiver hierarchy of tuner, demodulator, and decoder. Silicon tuners dramatically reduce BOM size and cost while improving consistency across production units. Key features of the TDA18214 family include support for all major digital TV standards (including DVB-T/DVB-C per the TDA18214 product documentation), a Low IF architecture optimized for digital demodulators, and integrated frequency synthesis controlled over a standard I2C serial interface. The single-chip integration eliminates IF SAW filtering complexity in many receiver designs and enables compact tuner modules. Technically, the device delivers the LIF signal required by COFDM and QAM demodulators, and its architecture is designed for high reception performance in terrestrial and cable environments. The /C2 suffix denotes the temperature/product flow grade, and S1557 is the ordering-code delivery form; the base silicon is identical to the TDA18214AHN/C1,557. Typical applications include digital terrestrial TV set-top boxes, cable receivers, integrated digital TV (iDTV) tuners, TV tuner modules and dongles, and PC TV reception cards. The 6x6 mm HVQFN-40 footprint suits compact module designs. Design consideration: silicon tuner performance is highly sensitive to PCB layout - keep the RF input path short with controlled impedance and place ground vias generously around the exposed pad. Follow the NXP reference design for the exact application circuit and I2C register configuration. This page adds distributor pricing, drop-in variant comparison, and design notes not found in the manufacturer datasheet.
TDA5100 - ASK/FSK RF Transmitter 433/868MHz | Infineon
The Infineon TDA5100 is a single-chip ASK/FSK RF transmitter for the 433-435 MHz and 868-870 MHz ISM bands, delivering up to +5 dBm output power at data rates up to 20 kbps in a 16-pin TSSOP package. The IC operates from a 2.5 V or 3.3 V supply and integrates a fully integrated frequency synthesizer, power amplifier, and crystal oscillator. An RF transmitter is a wireless device that generates and modulates a radio-frequency carrier for one-way data transmission to a matching receiver. Within the system hierarchy of wireless connectivity, it sits below complete transceivers (which also receive) and above bare oscillators, forming the transmit half of low-power short-range links such as remote controls, telemetry, and sensor nodes in the sub-GHz ISM bands. Key differentiating features include dual-band support (433-435 MHz and 868-870 MHz selectable), both ASK and FSK modulation in one device, an on-chip fully integrated frequency synthesizer that eliminates complex external PLL circuitry, and a high level of integration that requires only a few external components - notably the crystal, loop filter, and antenna matching network. This reduces bill-of-materials cost and PCB area significantly compared with discrete transmitter solutions. Technically, the TDA5100 uses a PLL-based synthesis architecture locked to an external crystal reference, giving stable carrier frequency without trimming. The modulator supports both amplitude shift keying and frequency shift keying, allowing designers to trade off receiver simplicity (ASK) against link robustness (FSK). The 20 kbps maximum data rate comfortably covers typical remote-keyless-entry and telemetry frame formats, while the +5 dBm output suits short-range links of tens of meters with a simple PCB or wire antenna. Typical applications include low-cost remote keyless entry transmitters, 868 MHz and 433 MHz ISM-band telemetry links, wireless sensor node transmission, and short-range control links for home automation and industrial actuation, where one-way, low-power, low-cost transmission is sufficient. Design consideration: because the output stage and synthesizer share the supply, apply clean local decoupling (100 nF close to each supply pin plus bulk capacitance) and keep the loop filter and crystal traces short and guarded from the antenna path to avoid pulling the PLL and degrading modulation accuracy. This page synthesizes distributor pricing context, drop-in alternative analysis, and practical design notes not found together in the manufacturer datasheet.
TDA5101 - 315MHz ASK/FSK RF Transmitter | Infineon
The Infineon TDA5101 is a single-chip ASK/FSK RF transmitter for the 315 MHz frequency band, delivering up to 5 dBm output power (at 3V) at data rates up to 20 kbps, housed in a 16-pin TSSOP (PG-TSSOP-16, 4.40 mm width) surface-mount package. An RF transmitter IC is a power-management and signal-chain device in the radio-frequency hierarchy that converts low-frequency digital data into modulated carrier signals for license-free wireless links. The TDA5101 belongs to the broader families of RF transmitters, RF integrated circuits, and short-range wireless communication devices used in unidirectional telemetry and control links. Key features include a high level of on-chip integration requiring only a few external components, support for both amplitude shift keying (ASK) and frequency shift keying (FSK), single-channel operation in the 315 MHz band, and operation from 2.5V or 3.3V supplies. The 5 dBm transmit power suits short-range remote-control and telemetry ranges, while the compact TSSOP-16 footprint simplifies PCB layout, including PCB-antenna designs. Architecturally, the device integrates the PLL synthesizer, power amplifier, and modulation functions on a single die. According to the Infineon datasheet, the ASK modulation path offers fast on/off keying of the power stage, while FSK is supported via crystal pulling for narrowband links. The crystal-referenced synthesizer provides stable, accurate carrier frequency generation across the operating range. Typical applications include low-cost remote keyless entry (RKE) transmitters, garage-door openers, wireless sensors, and simple one-way telemetry modules operating in the 315 MHz ISM band, common in North American and Asian markets. Design consideration: keep the antenna matching network and crystal traces short, and verify crystal load capacitance against the datasheet formula, since carrier accuracy directly drives receiver bandwidth and link range. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
TDA5200 - ASK RF Receiver 868/433 MHz, 5V | Infineon
The Infineon TDA5200 is a very low power consumption single-chip ASK (Amplitude Shift Keying) single-conversion RF receiver for the 868-870 MHz and 433-435 MHz license-free ISM receive bands, supplied in a 28-pin TSSOP package and rated for 5 V operation with automotive-grade qualification. An ASK single-conversion receiver is a type of RF receiver that downconverts the incoming radio signal to a single intermediate frequency using one mixing stage, then recovers the transmitted data by detecting amplitude variations of the carrier. Within the system hierarchy, it belongs to the short-range wireless category of RF receivers, which sits below RF transceivers (which add a transmit path) and above complete wireless modules, and forms the analog front end of a remote-control or telemetry link together with a microcontroller decoder. Key features of the TDA5200 include a high level of integration, meaning only a few external components are needed to build a complete receiver chain, and dual-band support covering both the European 868 MHz SRD band and the widely used 433 MHz band. Very low power consumption makes the device well suited to battery-powered remote keyless entry and telemetry nodes, and the automotive qualification extends its use to vehicle subsystems. From a technical standpoint, the receiver uses a single-conversion architecture with an on-chip local oscillator, typically controlled by a quartz crystal, whose load capacitance is selected according to the negative resistance of the oscillator circuit as described in the manufacturer datasheet. The LNA, mixer, IF limiting amplifier, and ASK demodulator are all integrated, minimizing BOM count and board area while improving repeatability in volume production. Typical applications include 868 MHz and 433 MHz remote keyless entry receivers, garage door openers, wireless alarm and security sensors, and low-rate industrial telemetry links, where its sensitivity and low current draw directly extend battery life and link reliability. When designing with the TDA5200, pay close attention to crystal load capacitance and PCB layout of the RF front end; matching network values and grounding strongly influence sensitivity and selectivity in the 433 MHz and 868 MHz bands. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
TDA5201 - ASK Receiver 315-345MHz -113dBm | Infineon
The Infineon TDA5201 is a very low power consumption single-chip ASK single-conversion superheterodyne receiver operating in the 310 MHz to 350 MHz frequency band, housed in a 28-pin PG-TSSOP-28 surface-mount package. It achieves a sensitivity of -113 dBm and covers common ISM/SRD frequencies such as 315 MHz and 345 MHz with a single conversion architecture. An ASK (Amplitude Shift Keying) receiver is a type of RF receiver that demodulates information encoded in the amplitude of a carrier wave. Within the wireless hierarchy, it belongs to the category of short-range RF receivers used in sub-GHz unlicensed-band radio links, sitting between the antenna front end and the baseband decoder in a typical remote-control or telemetry system. Single-conversion superheterodyne receivers such as the TDA5201 down-convert the RF signal to an intermediate frequency in one mixing stage, offering a good balance of sensitivity, selectivity, and low external component count. Key features include a high level of integration requiring only a few external components, very low power consumption suitable for battery-operated remote controls, ASK demodulation with received signal strength indication, and operation across the 315 MHz to 345 MHz receive range per the DigiKey product listing. The integrated low-noise amplifier, mixer, IF limiter, and demodulator reduce bill-of-material cost and board area. Technically, the receiver chain comprises an LNA feeding a single-conversion mixer, a limiting IF amplifier, and an ASK demodulator with data slicer, allowing direct interfacing to standard microcontrollers. The -113 dBm sensitivity supports link budgets of several hundred meters in open field with typical 315 MHz remote-control transmitters. Typical applications include 315 MHz keyless-entry receivers, garage-door openers, wireless alarm and security systems, and low-cost home-automation remote controls. Design consideration: crystal and IF resonator placement on the PCB strongly influences selectivity and spurious response; follow the Infineon reference layout for optimum performance. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
TDA5210 - FSK/ASK Superhet Receiver 868MHz | Infineon
The Infineon TDA5210 is a very low power consumption single-chip FSK/ASK superheterodyne receiver (SHR) covering the 400 MHz to 440 MHz and 810 MHz to 870 MHz frequency bands, housed in a 28-pin PG-TSSOP package with a typical sensitivity of -110 dBm and data rates up to 100 kbps. It operates from a 4.5 V to 5.5 V supply over a -40C to +105C temperature range. A superheterodyne receiver (SHR) is a receiver architecture that converts the incoming RF signal to a lower intermediate frequency (IF) by mixing it with a local oscillator, enabling high selectivity and sensitivity through fixed-frequency IF filtering. Within the signal-chain hierarchy, the TDA5210 is an RF receiver IC that sits between the antenna front end (LNA stage, integrated) and the baseband data slicer, forming the receive side of a wireless link typically paired with a companion transmitter such as the Infineon TDA5100/TDA5101. Key features include dual-band support for 434 MHz and 868 MHz ISM band operation, integrated low-noise amplifier and mixer, RSSI output for signal-strength indication, and FSK/ASK demodulation selectable by configuration. Very low power consumption makes it suitable for battery-backup and low-duty-cycle polling receivers. Architecturally, the TDA5210 is a single-conversion superheterodyne receiver: the on-chip LNA feeds a mixer referenced to an external or internal PLL-synthesized local oscillator, and the IF signal is amplified, limited, and demodulated. Pin compatibility with the ASK-only receiver TDA5200 allows designers to migrate between ASK and FSK/ASK platforms without PCB redesign. Typical applications include remote keyless entry (RKE) receivers, 868 MHz and 434 MHz ISM/SRD telemetry links, home and building automation, and security/surveillance wireless sensors. Design consideration: the 4.5 V to 5.5 V supply range means the part cannot run directly from a 3.3 V rail; plan a 5 V regulator, and follow the datasheet reference design for the crystal and PLL loop filter layout to preserve the -110 dBm sensitivity. This page adds value beyond the manufacturer datasheet by synthesizing distributor stock signals, drop-in family alternatives (TDA5200, TDA5211, TDA5230), and practical selection guidance in one place.
TDA5210XUMA1 - ASK/FSK RF Receiver 868MHz | Infineon
The Infineon Technologies TDA5210XUMA1 is a multi-band ASK/FSK superheterodyne RF receiver covering 810 MHz to 870 MHz and 400 MHz to 440 MHz, with a sensitivity of -107 dBm and data rates up to 100 kbps, housed in a 28-pin PG-TSSOP-28 surface-mount package. An RF receiver IC is a component in the wireless-signal-chain hierarchy (RF receiver -> RF/IF and RFID -> radio-frequency semiconductor) that selects, down-converts, demodulates, and digitizes weak modulated carrier signals from the air interface. The TDA5210 family performs this using a superheterodyne architecture with integrated low-noise amplifier, image-reject mixing, IF filtering, and a data slicer, so a single 5 V supply part can deliver a complete receive front end for one-way or two-way sub-GHz links. Key features include dual frequency-band coverage (810-870 MHz and 400-440 MHz), both ASK and FSK demodulation selectable by configuration, a very low standby current of 50 nA that enables years of battery life in receive-when-needed systems, and a fully integrated PLL synthesizer that removes the need for external VCO or varactor tuning. According to the Infineon TDA5210 datasheet, the -107 dBm sensitivity corresponds to reliable decoding of 100 kbps data in noisy ISM/SRD band environments. Technically, the device combines a low-noise gain stage, quadrature/ASK demodulator, and digital baseband slicing with a fractional-N style PLL referenced from a crystal oscillator. Polling mode lets a microcontroller wake the receiver periodically while the 50 nA sleep current dominates the average consumption budget. Typical applications include RF alarm and security systems operating in the 868 MHz European SRD band, 433 MHz remote keyless entry and telemetry, and low-power wireless sensor nodes in smart-home and industrial monitoring. Design consideration: the receiver runs from a 4.5 V to 5.5 V supply, so 3.3 V systems need an LDO or level-shifting on the digital interface; keep the crystal and matching network traces short for stable PLL lock. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
TDA5211 - FSK/ASK 310-350MHz Receiver, 50nA | Infineon
The Infineon TDA5211 is a very low power consumption single-chip FSK/ASK superheterodyne receiver covering the 310 MHz to 350 MHz frequency band, offering a sensitivity of -113 dBm, data rates up to 100 kbps, and a sleep-mode current draw of only 50 nA, housed in a 28-pin PG-TSSOP-28 surface-mount package. A superheterodyne receiver (SHR) is an RF receiver architecture that converts an incoming high-frequency radio signal to a lower intermediate frequency (IF) by mixing it with a locally generated oscillator signal. In the power-management hierarchy of a wireless link, the receiver IC sits between the antenna/LNA stage and the digital baseband, and the TDA5211 integrates the low-noise amplifier, mixer, VCO, PLL synthesizer, IF filter and demodulator on a single die, requiring only a few external components. Key features include dual FSK/ASK demodulation selectable via pin 15 (MSEL), an internal ASK/FSK switch built from two operational amplifiers providing a gain of 1 for ASK and a gain of 11 for FSK to achieve an appropriate demodulation gain characteristic, and an RF front end spanning 310 MHz to 350 MHz. The 50 nA power-down current makes the part ideal for battery-powered bidirectional links. Technically, the single-conversion superheterodyne architecture delivers the -113 dBm sensitivity at 100 kbps, and the fully integrated PLL synthesizer supports a crystal-referenced local oscillator, keeping frequency accuracy within a few ppm of the crystal tolerance. Typical applications include low-cost remote-keyless-entry (RKE) receivers, home and building automation sensor nodes, and low-power telemetry in the 315 MHz / 330 MHz regional ISM bands. Pairing with the pin-related ASK receiver TDA5201 or Infineon TDA5100 transmitter enables complete bidirectional RF links. Design consideration: keep the crystal loop and VCO tank components close to the IC with solid ground planes, and always select the FSK versus ASK demodulation path early, since the internal gain differs by a factor of 11 and drives RSSI scaling. This page synthesizes distributor pricing context, pin-compatible alternatives, design notes, and application guidance not consolidated in the manufacturer datasheet.