TDA5211 - FSK/ASK 310-350MHz Receiver, 50nA | Infineon
MPN: TDA5211 ✓ Active| Qty | Unit Price | Extended |
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| 10 | $0 | $0.00 |
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| 500 | $0 | $0.00 |
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Drop-in alternatives for TDA5211 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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TDA5201
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$2.4 / Unit
View Datasheet →TDA5211 Maximum Ratings & Electrical Characteristics
| Product Type | FSK/ASK Superheterodyne Receiver |
| Frequency Range | 310 MHz to 350 MHz |
| Modulation | ASK, FSK |
| Sensitivity | -113 dBm |
| Maximum Data Rate | 100 kbps |
| Supply Voltage | 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) |
| Package | PG-TSSOP-28 |
| Mounting Type | Surface Mount (PCB, Surface Mount) |
| Integration Level | High level of integration, few external components |
TDA5211 pg-tssop-28 Pin Configuration Guide
Complete pinout information for TDA5211 (pg-tssop-28 package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for TDA5211.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TDA5211 is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for TDA5211 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
| Sensitivity | -113 dBm | [DATA_NEEDED] |
| Data Rate | 100 kbps | [DATA_NEEDED] |
| Power-Down Current | 50 nA | [DATA_NEEDED] |
| Supply Voltage | 5 V | 5 V (same family) |
| Pin Compatibility | Reference (compatible with TDA5201) | Pin-to-pin compatible with TDA5211 |
Key Differentiators
- Dual FSK/ASK demodulation on one die (vs TDA5201)
- Nanoamp standby current (vs Generic sub-GHz transceivers (e.g., CC1101 class))
- High integration with minimal BOM (vs Discrete superhet implementations)
Design Notes
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.
Compliance Information
Compliance status not stated in the provided web data; confirm against the official Infineon product page and material declaration reports before design-in.
