STMicroelectronics ST25R3911B-AQFT RF Transceiver, 32-Pin QFN - pack size 4000 units
STMicroelectronics ST25R3911B-AQFT RF Transceiver, 32-Pin QFN - pack size 4000 units
MPN:
RS-ID: SKU:196-2004
4000 in stock
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Description
The ST25R3911B is a highly integrated NFC Initiator / HF Reader IC, including the Analogue front end (AFE) and a highly integrated data framing system. Implementation of 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.
Technical data
| Characteristic | Value |
|---|---|
| Product Type | RF Transceiver |
| Sub Type | Transceiver |
| Modulation Technique | AM |
| Package Type | QFN |
| Pin Count | 32 |
| Mount Type | Surface |
| Interface Type | SPI |
| Operating Band 1 Frequency | 27.12MHz |
| Minimum Supply Voltage | 2.4V |
| Maximum Supply Voltage | 5.5V |
| Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | 125°C |
| Height | 950μm |
| Length | 5mm |
| Standards/Approvals | No |
| Width | 5mm |
| Series | ST25R3911B |
| Number of Operating Bands | 1 |
| Automotive Standard | No |
Datasheet
Manufacturer
STMicroelectronics
Weight
0.200 G
Pack Size
1 reel = 4000 units
Base Unit of Measure
PCE
Shipping
2–3 days within Germany / 3–6 days within EU

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