ST25R3911B-AQFT, RF Transceivers
- RS庫存編號 196-2005
- 製造零件編號 ST25R3911B-AQFT
- 製造商 STMicroelectronics
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.
| Attribute | Value |
|---|---|
| Number of Operating Bands | 1 |
| Maximum Operating Band 1 Frequency | 13.56 MHz, 27.12 MHz |
| Height | 0.95mm |
| Data Rate | 424kbit/s |
| Modulation Technique | AM |
| Maximum Operating Supply Voltage | 5.5 V |
| Minimum Operating Supply Voltage | 2.4 V |
| Maximum Operating Temperature | +125 °C |
| Minimum Operating Temperature | -40 °C |
| Mounting Type | Surface Mount |
| Width | 5mm |
| Package Type | QFN |
| Length | 5mm |
| Dimensions | 5 x 5 x 0.95mm |
| Pin Count | 32 |
