STMicroelectronics STEVAL-IFS007V1

Overview

STEVAL-IFS007V1 from STMicroelectronics is a distributed proximity sensor demonstration board based on four TDA0161 high-frequency eddy-current proximity detectors, designed for 24 V industrial factory automation systems, with 4 independent coil inputs, LED status indicators, and jumper-selectable channel enable/disable functionality.

For engineers reviewing the STEVAL-IFS007V1 datasheet, STEVAL-IFS007V1 pinout, STEVAL-IFS007V1 application, or STEVAL-IFS007V1 equivalent, this board enables rapid evaluation of metallic object detection up to 4 mm distance via passive coil current-loss sensing, with output voltage swing of ~3 V (8.5–11.5 V) under 24 V supply and compatibility with protected interface boards like STEVAL-IFP008V1.

Technical Context

The board implements four identical TDA0161-based proximity sensing channels, each configured with tuned LC resonant circuits (470 pF capacitors, 12–15 kΩ resistors, BC337 transistors) to detect eddy-current losses induced by metallic objects within ≤4 mm range. Each channel delivers a DC-coupled analog output proportional to coil loss magnitude.

Input power is accepted via 24 V industrial connector (J1), with onboard overvoltage protection using SM6T12A-DT TVS diodes (D1–D3, D8–D9). Channel outputs (PROXY_1 to PROXY_4) are buffered and routed to screw terminals (CON2/CON6), supporting standalone use or integration with digital termination boards.

Key Specifications

Availability

STEVAL-IFS007V1 is available at Aetrix Electronics and suitable for factory automation, industrial machine safety monitoring, and 24 V PLC I/O expansion requiring stable component supply and rapid proximity sensor prototyping.

Supply support for STEVAL-IFS007V1 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 development tools for industrial, automotive, and consumer applications.

This board belongs to ST's STEVAL (ST Evaluation) platform family, engineered specifically to accelerate validation and integration of ST analog and interface ICs-here, the TDA0161 proximity detector-in real-world industrial control environments.

FAQ

What is the primary function of the STEVAL-IFS007V1 board?

The STEVAL-IFS007V1 is a demonstration board that implements four independent TDA0161-based proximity sensors to detect metallic objects up to 4 mm away by measuring eddy-current losses in passive coils. It provides analog voltage outputs (8.5–11.5 V range) and local LED indication per channel, intended for factory automation and industrial I/O evaluation.

Can STEVAL-IFS007V1 operate without an external controller?

Yes - it functions as a standalone sensor board: connect 24 V power and passive coils, then read analog outputs directly from screw terminals (CON2/CON6). No microcontroller is needed unless higher-level processing, communication, or digital interfacing is required - in which case pairing with STEVAL-IFP008V1 or similar protected interface board is recommended.

What protection features does the board include?

The board integrates SM6T12A-DT TVS diodes (D1–D3, D8–D9) across power and signal paths to clamp overvoltage transients up to 12 V, safeguarding the TDA0161 ICs and downstream circuitry. Input power enters via ruggedized 24 V industrial connector (J1), and each channel has discrete transistor buffering (BC337) and RC filtering to suppress noise and ESD coupling.

How is channel sensitivity adjusted on this board?

Sensitivity is fixed per channel by factory-tuned LC components: 470 pF capacitors (C1–C8), 12–15 kΩ resistors (R1–R9, R11–R12, R15–R19), and BC337 transistors set the oscillator frequency and detection threshold. No user-adjustable potentiometers or trimmers are present; calibration is achieved by selecting coil geometry and material - full tuning guidance is in the TDA0161 datasheet.