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STMicroelectronics ST25R200-BMET
- Part No.:
- ST25R200-BMET
- Manufacturer:
- STMicroelectronics
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
ST25R200-BMET.pdf
- Description:
- Linear IC's
- Quantity:
- Payment:
- Shipping:
Inventory:3,083
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Product details
Overview
ST25R200-BMET from STMicroelectronics is a high-performance NFC/HF RFID transceiver IC supporting ISO14443A/B, ISO15693, and NFC Forum T1T–T5T protocols at up to 106 kbit/s, featuring 256-byte FIFO, dynamic power output (DPO), active wave shaping (AWS), and inductive wake-up–enabled low-power card detection. It operates from 2.7–5.5 V, integrates dual RFI/RFO channels for single-ended or differential antenna configurations, and targets compact consumer and industrial NFC readers.
For engineers reviewing the ST25R200-BMET datasheet, ST25R200-BMET pinout, ST25R200-BMET application, or ST25R200-BMET equivalent, key selection considerations include its 27.12 MHz crystal oscillator support, integrated regulators for PSRR optimization, 24-pin UFQFPN24 package footprint, and configurable ASK modulation depth for robust tag interrogation in noisy environments.
Technical Context
The ST25R200 implements a fully integrated analog front-end with noise suppression receiver (NSR) technology, dual I/Q receiver channels for antenna characterization, and programmable transmitter drivers (RFO1/RFO2) supporting independent single-ended antennas or combined differential drive. Its digital core includes protocol timers (MRT/NRT/GPT), automatic CRC/parity framing, and transparent AFE mode for custom protocol implementation.
Operating modes are strictly state-controlled: Reset (minimal consumption), Power-down (SPI-accessible registers, VDD_D regulator active), Wake-up (RC oscillator + timer for inductive tag detection), and Ready (full AFE, crystal oscillator, all regulators enabled). The 27.12 MHz quartz oscillator features fast-start bias control and stable-amplitude monitoring via I_osc interrupt.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Protocols | ISO14443A/B @ 106 kbit/s, ISO15693 @ up to 53 kbit/s, NFC Forum T1T/T2T/T4T/T5T - enables interoperability with contactless smart cards, tags, and smartphones |
| Supply Voltage Range | 2.7–5.5 V (VDD), 2.7–5.5 V (VDD_IO) - supports direct integration with common microcontroller I/O domains and battery-powered designs |
| Antenna Driver Output | RFO1/RFO2 with up to 6 Vp swing - allows direct PCB trace antenna drive without external matching networks in compact form factors |
| FIFO Depth | 256-byte bidirectional FIFO - buffers full frames for SPI host handshaking, reducing real-time interrupt latency during burst transfers |
| Wake-up Sensitivity | Inductive wake-up mode with RC oscillator (26.48 kHz) and programmable timer - detects tag approach/removal at sub-100 µA average current, extending battery life in portable readers |
| Modulation Control | Adjustable ASK depth (8–55% in 16 steps) and OOK/ASK selectable - ensures reliable demodulation across diverse tag types and field conditions |
| Package | UFQFPN24 (4 × 4 mm, 0.5 mm pitch, ECOPACK2-compliant) - enables high-density layout in space-constrained IoT and wearable devices |
Pinout & Package
ST25R200-BMET is housed in a 24-pin UFQFPN (4 × 4 mm) package with exposed thermal pad (VSS/EP). Pin functions are validated per DS13658 Rev 2, supporting dual antenna configurations, EMC-filtered system integration, and level-shifted SPI communication.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IRQ | Interrupt request output | Active-high open-drain signal indicating register events (e.g., I_osc, card detect, FIFO full) - enables efficient host polling reduction |
| RFO1 / RFO2 | Antenna driver outputs | Configurable as differential pair (single antenna) or independent single-ended outputs (dual antennas) - eliminates need for external RF switches |
| RFI1 / RFI2 | Receiver inputs | Differential input path for noise-rejecting demodulation; supports I/Q sampling for antenna tuning and EMD compensation |
| VDD_DR / VDD_AM | Regulated driver supplies | VDD_DR (5 V domain) powers RFO stage with 250 mA current limit; VDD_AM sets AM modulation index - decoupled regulation improves PSRR by >40 dB |
| XTI / XTO | Crystal oscillator interface | 27.12 MHz fundamental-mode crystal connection with fast-start transconductance control - achieves stable oscillation in <5 ms for rapid system wake-up |
| MOSI / MISO / SCLK / BSS | SPI interface signals | CMOS-level 4-wire SPI (CPOL=0, CPHA=1, active-low BSS) up to 10 Mbit/s - compatible with ARM Cortex-M and RISC-V host MCUs without level translation |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Power Output (DPO) | Real-time RF output adjustment based on antenna impedance and supply voltage - maintains consistent read range across varying coil geometries and battery states |
| Active Wave Shaping (AWS) | Overshoot/undershoot suppression on RFO edges - prevents electromagnetic interference with adjacent sensors and ensures FCC/ETSI compliance without added ferrites |
| Integrated EMD Handling | On-chip electro-magnetic disturbance compensation using RFI1/RFI2 differential sampling - eliminates need for external EMD filters in industrial metal-mount applications |
| Automatic Gain Control + Squelch | Adaptive receiver gain and SNR-optimized squelch threshold - sustains reliable tag reads in electrically noisy environments (e.g., kitchen appliances, motor drives) |
| Two Independent Antenna Support | Simultaneous RFO1/RFO2 drive with separate RFI paths - enables dual-zone access control (e.g., door + credential reader) or directional sensing without multiplexers |
Applications
| Access Control Systems | Smart Home Appliances |
|---|---|
|
Use Scenario: Contactless entry for office doors or secure cabinets using NFC-enabled credentials. IC Role / Device Role / Timing Role: NFC transceiver handling ISO14443A/B authentication, card presence detection, and encrypted frame exchange with host MCU. Use Value: Inductive wake-up enables instant response (<100 ms) upon credential approach, while DPO maintains read reliability across varied door-metal thicknesses. |
Use Scenario: Tap-to-pair functionality in refrigerators, ovens, or coffee makers for user profile loading or recipe transfer. IC Role / Device Role / Timing Role: Reader/writer managing NFC Forum T2T tag interaction for parameter auto-configuration and firmware update triggers. Use Value: Integrated regulators suppress noise from compressor/motor switching, ensuring stable tag reads during appliance operation. |
| Industrial Tool Authentication | Healthcare Device Pairing |
|
Use Scenario: Verifying OEM-approved batteries or attachments for cordless power tools. IC Role / Device Role / Timing Role: Proprietary protocol implementation (via transparent AFE mode) for secure accessory handshake and calibration data exchange. Use Value: Dual-antenna support allows simultaneous verification of battery (RFO1) and tool head (RFO2), reducing mechanical complexity and assembly cost. |
Use Scenario: Secure pairing of NFC-enabled glucose meters or inhalers with patient smartphones for health data logging. IC Role / Device Role / Timing Role: Low-power NFC reader initiating T4T-based NDEF message exchange with mobile device under strict battery life constraints. Use Value: Sub-100 µA wake-up current extends coin-cell battery life to >2 years while maintaining <200 ms detection latency for patient-initiated interactions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NFC transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP PN7160 | Lacks integrated regulators; requires external LDOs for VDD_A/VDD_DR; no dual-antenna support; lower max output power (4.5 Vp) | Better suited for cost-sensitive consumer electronics where board space permits discrete power management | Select when leveraging existing NXP software stack or requiring certified NFC controller certification (CE/FCC pre-scanned) |
| Infineon SLI13 | No ISO15693 support; no inductive wake-up; smaller 16-pin QFN; no AWS or DPO features | Targeted at basic access control only - limited to ISO14443A/B and proprietary protocols | Select for ultra-low-cost, single-protocol implementations where antenna tuning and noise immunity are secondary |
Compared with PN7160 and SLI13, the ST25R200-BMET delivers superior RF flexibility (dual antenna, ISO15693, DPO/AWS), higher integration (four on-chip regulators, RC oscillator), and lower system-level BOM count - making it optimal for compact, noise-immune, multi-protocol industrial and medical readers.
Availability
ST25R200-BMET is available at Aetrix Electronics and suitable for access control systems, smart home appliances, industrial tool authentication, and healthcare device pairing requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for ST25R200-BMET includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, analog ICs, MEMS, and power solutions for automotive, industrial, and consumer markets.
The ST25R series targets high-integration NFC/HF RFID reader applications demanding robust performance in electrically noisy, space-constrained, and battery-operated environments - emphasizing analog front-end innovation and system-level power efficiency.
FAQ
What antenna configurations does the ST25R200-BMET support?
The ST25R200-BMET supports three antenna topologies: differential (RFO1+RFO2 driving one antenna), single-ended (RFO1 or RFO2 independently driving separate antennas), and two independent single-ended antennas simultaneously. Its RFI1/RFI2 differential receiver input enables precise antenna impedance measurement and EMD compensation without external circuitry.
How does the inductive wake-up mode reduce power consumption?
Inductive wake-up uses the internal 26.48 kHz RC oscillator and programmable timer to periodically sample antenna resonance shifts - detecting tag approach/removal at ~80 µA average current. This avoids continuous 13.56 MHz carrier generation, extending battery life in portable readers by orders of magnitude versus always-on operation.
Can the ST25R200-BMET interface directly with a 1.8 V microcontroller?
Yes - VDD_IO (pin 3) accepts 1.65–5.5 V, enabling direct SPI interfacing with 1.8 V, 3.3 V, or 5 V MCUs. Level shifters isolate the internal 1 V digital core (VDD_D) and 3 V analog domain (VDD_A), eliminating external level translators while maintaining signal integrity and timing margins up to 10 Mbit/s.
What is the role of the AGD pin and how should it be decoupled?
AGD (pin 15) provides the analog reference voltage for internal ADCs and comparators. It must be decoupled with a 1 µF ceramic capacitor in parallel with a 10 nF capacitor, connected directly to GND_A (pin 18). Improper decoupling causes I/Q channel measurement drift and reduced SNR in noisy environments.
ST25R200-BMET Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 24-UFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- RFID Reader
- Frequency:
- 27.12MHz
- Standards:
- ISO 14443-A, ISO 14443-B, ISO 15693, MIFARE, NFC
- Interface:
- SPI
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-UFQFPN (4x4)
ST25R200-BMET FAQ
1.How can I place an order for ST25R200-BMET through Aetrix?
Please submit a Request for Quotation (RFQ) for ST25R200-BMET on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ST25R200-BMET reliable?
The price and inventory of ST25R200-BMET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST25R200-BMET is usually 5 days.
3.What payment methods are accepted for ST25R200-BMET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST25R200-BMET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST25R200-BMET?
ST25R200-BMET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST25R200-BMET order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ST25R200-BMET?
For technical support, including ST25R200-BMET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST25R200-BMET requirements.
6.How does Aetrix verify that ST25R200-BMET is sourced from the original manufacturer or authorized distributors?
All ST25R200-BMET products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ST25R200-BMET meets industry standards.
7.What is the process for return or replacement of ST25R200-BMET?
All ST25R200-BMET units undergo pre-shipment inspection (PSI). If there is an issue with ST25R200-BMET, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ST25R200-BMET part is unused and in its original packaging.
Return procedure for ST25R200-BMET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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