Description
The ST25RU3993 RAIN® (UHF) RFID reader device provides multi-protocol support for the 840-960 MHz UHF band compatible with ISO18000-62 & -63, ISO29143 and to GS1’s EPC UHF Gen2 air interface protocol. It includes an on-chip VCO and a power amplifier, and offers a complete set of RFID features including dense reader mode (DRM) functionality and support for frequency-hopping, low-level transmission coding, low-level decode, data framing and CRC checking. The ST25RU3993 operates at very low-power, making it suitable for use in portable and batterypowered equipment such as mobile phones.

Features
■ Supply voltage range 3.0 to 3.6 V – Limited operation possible down to 2.7 V – Maximum PA supply voltage 4.3 V – Peripheral I/O supply range 1.65 to 5.5 V
■ Protocol support for: – ISO 18000-6C (EPC Class1 Gen2) – ISO 29143 (Air interface for mobile RFID) – ISO 18000-6A/B through direct mode
■ DRM: 250 kHz and 320 kHz filters for M4 and M8
■ Integrated supply regulators
■ Frequency hopping support
■ ASK or PR-ASK modulation
■ Automatic I/Q selection
■ Phase bit for tag tracking with 8-bit linear RSSI
■ Temperature range: -40 °C to 85 °C
■ 48-pin QFN (7x7x0.9 mm) package
■ Tag read rates of up to 700* tags/s (16-bit tag EPC length)