STMicroelectronics ANT7-T-ST25DV04K

Overview

ANT7-T-ST25DV04K from STMicroelectronics is a ready-to-use reference evaluation board for Zhaga Consortium Book 25 NFC reader certification, integrating the ST25DV04K dual-interface EEPROM, a 14 mm × 14 mm 13.56 MHz double-layer etched antenna, I²C test points, configurable RF-event-driven GPO, and analog energy harvesting (EH) output.

For engineers reviewing the ANT7-T-ST25DV04K datasheet, ANT7-T-ST25DV04K pinout, ANT7-T-ST25DV04K application, or ANT7-T-ST25DV04K equivalent, this board serves as a certified reference design for NFC field validation, I²C interoperability testing, energy harvesting verification, and antenna coupling characterization in compact IoT tag readers.

Technical Context

The board implements the ST25DV04K dynamic NFC tag IC in a fixed-geometry antenna configuration optimized for near-field coupling at 13.56 MHz, with bidirectional I²C interface (1.7–5.5 V supply) and RF-triggered GPO assertion. It supports ISO 15693 and NFC Forum Type 5 tag protocols, enabling host-controlled memory access and RF event detection.

Energy harvesting output delivers up to 3.3 V DC from RF field coupling, sufficient to power external low-power logic or sensors without battery. The PCB layout complies with Zhaga Book 25 mechanical, electrical, and RF performance requirements for standardized NFC reader validation.

Key Specifications

Availability

ANT7-T-ST25DV04K is available at Aetrix Electronics and suitable for NFC reader certification, IoT tag validation, and energy-harvesting sensor prototyping requiring stable component supply and documented Zhaga Book 25 compliance.

Supply support for ANT7-T-ST25DV04K includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, power ICs, sensors, and analog/mixed-signal products for industrial, automotive, and consumer applications.

This board belongs to ST's ST25 NFC ecosystem product line, developed specifically to accelerate NFC reader certification, simplify antenna integration, and enable rapid validation of dual-interface EEPROM functionality in space-constrained designs.

FAQ

What is the primary purpose of the ANT7-T-ST25DV04K board?

The ANT7-T-ST25DV04K is a Zhaga Consortium Book 25–certified reference board used exclusively for NFC reader certification testing. It integrates the ST25DV04K dual-interface EEPROM with a standardized 14 mm × 14 mm antenna to validate reader field strength, coupling efficiency, and protocol compliance under defined mechanical and RF conditions.

Can the board operate without external power?

Yes - the board supports passive operation via RF energy harvesting. When placed in an active NFC reader field, the ST25DV04K generates up to ~3.3 V on its EH pin, sufficient to power external low-current circuits. For I²C communication or extended functionality, external SELV supply (<5 V, <15 W, ES1/PS1 compliant) is required.

How is the GPO pin configured and used?

The GPO pin is hardware-configurable via on-board jumpers to assert high/low on RF field detection, memory access, or RF collision events. It provides a TTL-level signal directly usable by microcontrollers for interrupt-driven state handling, eliminating need for polling-based RF status checks in host firmware.

Where can Gerber files and design resources be obtained?

Gerber files, schematic, BOM, and layout guidelines are publicly available for download from STMicroelectronics' official website at www.st.com under the ANT7-T-ST25DV04K product page (document DB3677). No NDA or registration is required to access these reference design assets.