RF Receivers
Products (5)
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.
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.
TDA5230 - ASK/FSK ISM Receiver 302-870MHz | Infineon
The Infineon TDA5230 is a universal, highly sensitive, low-power single-chip ASK/FSK superheterodyne image-reject receiver for Manchester-coded data signals, covering the ISM bands from 302 MHz to 320 MHz, 433 MHz to 450 MHz, and 865 MHz to 870 MHz in a TSSOP surface-mount package. A superheterodyne image-reject receiver is a radio-frequency architecture that converts the incoming RF signal to an intermediate frequency in two stages while using an image-reject mixer to suppress the mirror frequency, reducing the need for expensive front-end SAW filtering. Within the power-management hierarchy of a wireless link, such receivers sit between the antenna/LNA stage and the digital baseband, making them a core component of low-power RF front ends for remote-control and telemetry systems. Key features include multi-band operation across three ISM ranges (302-320 MHz, 433-450 MHz, and 865-870 MHz), support for both ASK and FSK demodulation, and integrated digital baseband processing for Manchester-coded data signals. The image-reject mixer architecture lowers external component count, while the low-power design targets battery-operated transmitter-receiver links such as keyless entry and remote sensors. Technically, the TDA5230 performs single-conversion superheterodyne reception with multi-channel synthesizer-based tuning, allowing firmware selection of channels within the supported bands. The on-chip digital baseband handles data slicing and Manchester decoding, offloading the host microcontroller and improving tolerance to noise and frequency drift. Typical applications include 433 MHz and 868 MHz remote keyless entry receivers, home and building automation nodes, low-power telemetry in the 315/433/868/870 MHz ISM bands, and wireless sensor read-outs. Design consideration: the image-reject and channel-filter settings must be configured to match the chosen band and data rate; verify crystal and reference frequency planning against the datasheet before locking the PCB layout. This page synthesizes distributor pricing, same-family drop-in candidates, and practical design notes not consolidated in the manufacturer datasheet.
TDA5235XUMA1 - ASK/FSK Multi-Band RF Receiver | Infineon
The Infineon TDA5235XUMA1 is a low-power ASK/FSK multi-band RF receiver from the SmartLEWIS RX+ family, covering the 300-320 MHz, 425-450 MHz, 863-870 MHz and 902-928 MHz frequency bands with a typical FSK sensitivity of -118 dBm (-117 dBm per DigiKey listing) and a data rate of up to 112 kcps, housed in a 28-pin PG-TSSOP-28 surface-mount package. An RF receiver IC is a component in the wireless signal chain that demodulates radio-frequency signals transmitted by a remote device, converting them into a baseband data stream for a host microcontroller. Within the system hierarchy, the TDA5235 belongs to the wireless control receiver class: RF receiver -> short-range wireless IC -> RF & wireless semiconductor. Key features include the SmartLEWIS autonomous receive mode, which offloads complete telegram evaluation from the host processor, reducing host noise, improving effective sensitivity and lowering total system power consumption. The receiver supports bi-phase modulation schemes such as Manchester, bi-phase mark, bi-phase space and differential Manchester, and stores up to 2 parallel parameter sets, allowing a single PCB to serve multiple regional frequency bands. Technically, the TDA5235 integrates a low-IF architecture with digital baseband processing, delivering its enhanced sensitivity without expensive external SAW pre-filters in many designs. According to the Infineon SmartLEWIS RX family brochure covering TDA5240, TDA5235 and TDA5225, the family targets the highest receiver sensitivity in its class while supporting flexible channel and encoding configuration via a serial interface. Typical applications include remote keyless entry (RKE) receivers, tire pressure monitoring systems (TPMS), garage door openers, and general-purpose 300-928 MHz remote controls. The four supported ISM bands make one design adaptable to North American, European and Asian regional allocations. When designing with the TDA5235, verify antenna matching network and crystal tolerance for the selected band; sensitivity figures assume an accurately tuned RF front end, and microcontroller firmware must handle the autonomous-mode status interface for best power performance. This page synthesizes distributor pricing, drop-in alternatives, practical design notes, and comparison data not found in the manufacturer datasheet.
TDA5240 - Multi-Band ASK/FSK RF Receiver -118dBm | Infineon
The Infineon TDA5240 is a high-sensitivity multi-channel ASK/FSK RF receiver IC delivering typ. -118 dBm sensitivity for FSK and -116 dBm for ASK, supporting four frequency bands (300-320 MHz, 425-450 MHz, 863-870 MHz, 902-928 MHz) in a 28-pin PG-TSSOP surface-mount package. An RF receiver is a component of a wireless control link that demodulates low-power RF signals transmitted by remote key fobs or sensors and converts them into digital data for a host microcontroller. Within the system hierarchy, it sits between the antenna front end and the baseband MCU, forming the receive half of a sub-GHz wireless power-management chain that also includes an RF transmitter such as the Infineon TDA5100 or TDA5101. Key features of the TDA5240 include up to 4 parallel parameter sets and up to 12 different frequency channels, autonomous receive mode that reduces host processor noise, improves sensitivity and lowers system power consumption, and several embedded encodings and modulation formats covering ASK and FSK. A data rate of up to 112 kcps supports fast RKE and TPMS protocols. Architecturally, the device belongs to the Infineon SmartLEWIS RX family (together with TDA5235 and TDA5225) and integrates a low-IF receiver path with digital band-band processing, which is described by the manufacturer as a multi-channel quad-configuration receiver. The wide band coverage allows one hardware design to serve regional variants across North America, Europe and Asia without redesign. Typical applications include remote keyless entry (RKE) receivers, tire pressure monitoring systems (TPMS), wireless remote controls, and home/industrial telemetry links operating in the sub-GHz ISM bands. For design, take advantage of the autonomous receive mode to keep the host MCU in sleep while the TDA5240 polls for valid telegrams, cutting average system current; ensure supply design supports both 3.3 V and 5 V rails as the device is automotive-grade rated. This page synthesizes distributor data, drop-in family alternatives, and design notes not found in the manufacturer datasheet.