TDA5211 - FSK/ASK 310-350MHz Receiver, 50nA | Infineon
料号： TDA5211 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
TDA5211 概述
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.
直接替换替代料： TDA5211 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： TDA5211 （相同外形与封装尺寸） ——差异在于 Modulation, Product Type, Package, Architecture, Function.
快速对比工具——选择替代料号进行并排对比：
TDA5211 规格参数
| Product Type | FSK/ASK Superheterodyne Receiver |
| Frequency Range | 310 MHz to 350 MHz |
| Modulation | ASK, FSK |
| Sensitivity | -113 dBm |
| Maximum Data Rate | 100 kbps |
| 电源电压 | 5 V |
| Power-Down Current | 50 nA |
| Architecture | Single-chip Superheterodyne (SHR) |
| Pin Compatibility | Pin compatible with ASK receiver TDA5201 |
| Demodulation Gain (ASK) | 1 (internal op-amp switch) |
| Demodulation Gain (FSK) | 11 (internal op-amp switch) |
| Mode Select Pin | Pin 15 (MSEL) |
| 封装 | PG-TSSOP-28 |
| 安装类型 | Surface Mount (PCB, Surface Mount) |
| Integration Level | High level of integration, few external components |
TDA5211 pg-tssop-28 引脚配置指南
TDA5211（pg-tssop-28 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： TDA5211.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TDA5211 适用于 6 应用s: Remote Keyless Entry (RKE) Receivers, Home and Building Automation Sensor Nodes, Low-Power Telemetry and Meter Reading, Garage Door and Gate Openers, Security and Alarm Systems, RF Module and Evaluation Designs.
Remote Keyless Entry (RKE) Receivers
The TDA5211 fits 315 MHz RKE receivers because its 310-350 MHz band, -113 dBm sensitivity, and 50 nA power-down current directly match the duty-cycled listening profile of vehicle-side receivers powered from the car battery or a coin cell. At 100 kbps maximum data rate, rolling-code protocols running at a few kbps decode with large timing margin. Placed after a small loop or PCB antenna, the superheterodyne architecture rejects strong out-of-band interferers common in parking environments, and the 5 V supply integrates cleanly with legacy body-control 5 V rails. The FSK capability also future-proofs the receiver for fobs that upgrade from ASK to FSK modulation.
推荐
Home and Building Automation Sensor Nodes
Battery-powered door/window sensors, motion detectors, and wall switches in the 315/330 MHz SRD band benefit from the TDA5211's 50 nA sleep current: with a wake-and-poll duty cycle, a CR2032 cell can last several years. The -113 dBm sensitivity supports whole-house coverage from a single access-point receiver, and the 100 kbps rate comfortably carries status frames with CRC overhead. Because the IC integrates LNA, mixer, PLL and demodulator, the bill of materials stays small - only a crystal, a few passives, and the antenna network - which matters for high-volume, cost-sensitive smart-home hardware. FSK mode via MSEL improves robustness in congested 2.4-GHz-polluted homes.
推荐
Low-Power Telemetry and Meter Reading
Utility sub-metering and industrial telemetry in regional sub-GHz bands (310-350 MHz) exploit the TDA5211's combination of nanoamp standby and -113 dBm sensitivity to bridge long distances with milliwatt-class transmitters. The 100 kbps data rate allows burst transmission of meter readings followed by immediate return to the 50 nA sleep state, maximizing battery service life in sealed meters with 10-year field-life targets. The single-conversion superheterodyne IF chain provides stable selectivity without tunable filters, reducing factory calibration. The 5 V supply is compatible with industrial control panels, and the PG-TSSOP-28 package reflows on standard lead-free SMT lines.
推荐
Garage Door and Gate Openers
Garage-door opener receivers operate in exactly the 310-350 MHz band the TDA5211 covers natively, and the -113 dBm sensitivity delivers the extended range (tens of meters through walls) that users expect from remote controls. The 50 nA standby current suits mains-powered opener units that must listen continuously, and the 100 kbps ceiling supports modern rolling-code security protocols that need rapid command bursts. Because the TDA5211 is pin compatible with the ASK-only TDA5201, manufacturers can run a single PCB through both ASK-legacy and FSK-upgrade product tiers, changing only the receiver placement and MSEL strap - a genuine platform strategy for high-volume opener brands.
推荐
Security and Alarm Systems
Wireless alarm sensors (PIR, magnetic contact, panic buttons) transmitting in the 315-330 MHz band require the TDA5211's -113 dBm sensitivity to guarantee detection across multi-room residences, while FSK demodulation resists the interference and jamming attempts that threaten ASK-only alarm links - a genuine security benefit, not just a spec sheet item. The 50 nA sleep current lets sensor hubs keep the receiver active in low-duty polling schemes without wall-power constraints. The internal ASK/FSK switch (gain 1 for ASK, gain 11 for FSK on pin 15 MSEL) simplifies baseband design across mixed sensor fleets transmitting either modulation on the same receiver platform.
推荐
RF Module and Evaluation Designs
Because the TDA5211 needs only a few external components per the Infineon datasheet - a crystal, PLL loop filter, IF and data-slicer passives - it is an excellent core for OEM RF receiver modules and evaluation boards targeting 315 MHz certified products. The PG-TSSOP-28 package with 1.27 mm (approximately) pin pitch hand-solders and probes easily, and the pin compatibility with TDA5201 lets one module layout serve ASK and FSK firmware variants. DigiKey stocks the TDA5211XUMA1 for immediate prototyping, and the 52-page datasheet provides reference block diagrams and application circuits that accelerate first-spin success for engineers new to sub-GHz superheterodyne design.
推荐
推荐产品汇总
工程参考数据： TDA5211 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TDA5201 |
|---|---|---|
| Package | PG-TSSOP-28 | PG-TSSOP-28 - same |
| Brand | Infineon | Infineon - same |
| Frequency Range | 310-350 MHz | 310-350 MHz (same band) |
| Modulation | FSK and ASK (MSEL selectable) | ASK only |
| Supply Voltage | 5 V | 5 V (same family) |
| Pin Compatibility | Reference (compatible with TDA5201) | Pin-to-pin compatible with TDA5211 |
关键差异点
- Dual FSK/ASK demodulation on one die （对比 TDA5201)
- Nanoamp standby current （对比 Generic sub-GHz transceivers (e.g., CC1101 class))
- High integration with minimal BOM （对比 Discrete superhet implementations)
设计说明
Keep the crystal, PLL loop filter, and VCO tank components within a few millimeters of the TDA5211 pins over an unbroken ground plane on layer 2 of the PCB. The 310-350 MHz front end is sensitive to stray inductance; keep the antenna-matching network (typically a series inductor plus shunt capacitor near the LNA input) short and isolated from digital data lines. Per the datasheet the IC achieves high integration with few external components, so layout parasitics dominate the tuning budget - allocate all SRF-sensitive passives as C0G/NP0 ceramics.
MSEL (pin 15) selects ASK (gain 1) versus FSK (gain 11) demodulation via the internal op-amp switch. The 11x FSK demodulation gain means data-slicer thresholds and RSSI interpretation differ substantially between modes - a baseband designed for ASK amplitude levels will clip or mis-slice FSK data if MSEL is changed without re-characterizing the data path. Strap MSEL with a defined pull resistor (not floating), and validate both modes during design-in if you plan dual-modulation product variants.
The 5 V supply must be decoupled with at least a 100 nF ceramic directly at the supply pin plus a bulk 1-10 uF capacitor nearby. The 50 nA power-down figure is only achieved when the device is properly disabled; residual leakage through a soft pull-up on the mode-select or data pins can swamp the nanoamp standby budget. Estimated: on a CR2032 (about 220 mAh), a receiver polling 1% duty cycle at active-mode current will still be dominated by sleep current, so verify actual sleep measurement on your PCB rather than trusting board-level leakage assumptions.
Route the demodulated data output away from the crystal and VCO nodes; digital baseband edges couple into the oscillator and appear as spurious frequency error, degrading the -113 dBm sensitivity on weak signals. If the TDA5211 shares a board with a microcontroller, add a small series resistor (about 1 kOhm) on the data line to slow edges and reduce radiated harmonics, and keep the MCU ground return separate from the RF ground until they meet at a single star point.
合规信息
Compliance status not stated in the provided web data; confirm against the official Infineon product page and material declaration reports before design-in.
