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ST25RU3993：UHF RFID Reader IC

The ST25RU3993 is an EPC Class 1 Gen 2 RFID reader IC that implements all the relevant protocols, including ISO 18000-6C, the ISO 29143 air-interface protocol for mobile RFID interrogators, and ISO 18000-6A/B for operation in direct mode. 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 battery-powered equipment such as mobile phones.

Packaged in a 7x7 mm QFN, the ST25RU3993 is able to deliver very high sensitivity and provides high immunity against the effects of antenna reflection and self-jamming. This is critical in mobile and embedded applications, in which antenna design is often compromised by cost or size constraints. High sensitivity enables the end-products to achieve their required read range while using a simpler and cheaper antenna, thus reducing overall system cost.

Thanks to its high level of integration, the ST25RU3993 requires only an external 8-bit microcontroller to create a complete RFID reader system, thus eliminating the need for a complex RFID co-processor.

Key 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

Product Specifications

Application Notes

Sample & Buy

Quality & Reliability