ST25R3911B-AQFT
RFID Reader IC 13.56MHz ISO 14443, NFC SPI 2.4V ~ 5.5V 32-VFQFN Exposed Pad
Brands: STMicroelectronics
Mfr.Part #: ST25R3911B-AQFT
Datasheet: ST25R3911B-AQFT Datasheet (PDF)
Package/Case: 32-VFQFNExposedPad
RoHS Status:
Stock Condition: 8928 pcs, New Original
Warranty: 1 Year Ovaga Warranty - Find Out More
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*All prices are in USD
Qty | Unit Price | Ext Price |
---|---|---|
1 | $1.742 | $1.742 |
10 | $1.507 | $15.070 |
30 | $1.363 | $40.890 |
100 | $1.213 | $121.300 |
500 | $1.146 | $573.000 |
1000 | $1.116 | $1116.000 |
In Stock:8928 PCS
ST25R3911B-AQFT General Description
The ST25R3911B is a highly integrated NFC Initiator / HF reader IC, including the analog front end (AFE) and a highly integrated data framing system for ISO 18092 (NFCIP-1) initiator, ISO 18092 (NFCIP-1) active target, ISO 14443A and B reader (including high bit rates), ISO 15693 reader and FeliCa™ reader. Implementation of other standard and custom protocols like MIFARE™ Classic is possible using the AFE and implementing framing in the external microcontroller (Stream and Transparent modes).The ST25R3911B is positioned perfectly for the infrastructure side of the NFC system, where users need optimal RF performance and flexibility combined with low power.Thanks to automatic antenna tuning (AAT) technology, the device is optimized for applications with directly driven antennas. The ST25R3911B is alone in the domain of HF reader ICs as it contains two differential low impedance (1 Ohm) antenna drivers.The ST25R3911B includes several features that make it very suited for low power applications. It contains a low power capacitive sensor that can be used to detect the presence of a card without switching on the reader field. The presence of a card can also be detected by performing a measurement of amplitude or phase of signal on antenna LC tank, and comparing it to the stored reference. It also contains a low power RC oscillator and wake-up timer that can be used to wake up the system after a defined time period, and to check for the presence of a tag using one or more low power detection techniques (capacitive, phase or amplitude).The ST25R3911B is designed to operate from a wide (2.4 V to 5.5 V) power supply range; peripheral interface IO pins support power supply range from 1.65 V to 5.5 V.Discovery kit for the ST25R3911B high performanc.NFC card reader expansion board based on ST25R39.
Features
- ISO 18092 (NFCIP-1) Active P2P
- ISO14443A, ISO14443B, ISO15693 and FeliCa™
- Supports VHBR (3.4 Mbit/s PICC to PCD framing, 6.8 Mbit/s AFE and PCD to PICC framing)
- Capacitive sensing - Wake-up
- Automatic antenna tuning system providing tuning of antenna LC tank
- Automatic modulation index adjustment
- AM and PM demodulator channels with automatic selection
- DPO (Dynamic power output)
- Up to 1.4 W in case of differential output
- User selectable and automatic gain control
- Transparent and stream modes to implement MIFARE™ classic compliant or other custom protocols
- Possibility of driving two antennas in single ended mode
- Oscillator input capable of operating with 13.56 MHz or 27.12 MHz crystal with fast start-up
- 6 Mbit/s SPI with 96 bytes FIFO
- Wide supply voltage range from 2.4 V to 5.5 V
- Wide temperature range: -40 °C to 125 °C
- QFN32, 5x5 mm package with wetable flank or wafer delivery
Specifications
Parameter | Value | Parameter | Value |
---|---|---|---|
Series | ST25R | Product Status | Active |
Type | RFID Reader | Frequency | 13.56MHz |
Standards | ISO 14443, NFC | Interface | SPI |
Voltage - Supply | 2.4V ~ 5.5V | Operating Temperature | -40°C ~ 125°C |
Mounting Type | Surface Mount | Package / Case | 32-VFQFN Exposed Pad |
Supplier Device Package | 32-QFN (5x5) |
Shipping
Shipping Type | Ship Fee | Lead Time | |
---|---|---|---|
DHL | $20.00-$40.00 (0.50 KG) | 2-5 days | |
Fedex | $20.00-$40.00 (0.50 KG) | 2-5 days | |
UPS | $20.00-$40.00 (0.50 KG) | 2-5 days | |
TNT | $20.00-$40.00 (0.50 KG) | 2-5 days | |
EMS | $20.00-$40.00 (0.50 KG) | 2-5 days | |
REGISTERED AIR MAIL | $20.00-$40.00 (0.50 KG) | 2-5 days |
Processing Time:Shipping fee depend on different zone and country.
Payment
Terms of payment | Hand Fee | |
---|---|---|
Wire Transfer | charge US$30.00 banking fee. | |
Paypal | charge 4.0% service fee. | |
Credit Card | charge 3.5% service fee. | |
Western Union | charge US.00 banking fee. | |
Money Gram | charge US$0.00 banking fee. |
Guarantees
1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.
2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.
Packing
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Step1 :Product
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Step2 :Vacuum packaging
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Step3 :Anti-static bag
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Step4 :Individual packaging
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Step5 :Packaging boxes
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Step6 :bar-code shipping tag
All the products will packing in anti-staticbag. Ship with ESD antistatic protection.
Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.
We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.
After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.
We provide high quality products, thoughtful service and after sale guarantee
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We have rich products, can meet your various needs.
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Minimum order quantity starts from 1pcs.
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365 days quality guarantee for all products