STMicroelectronics STEVAL-IFS017V8

Overview

STEVAL-IFS017V8 from STMicroelectronics is a temperature sensor daughter card built around the STTS2004 digital I²C temperature sensor IC, designed for plug-in evaluation on the STEVAL-IFS017V1 motherboard platform. It supports multi-point temperature monitoring with configurable I²C address (A0–A2), 2.2 V to 3.6 V supply range, and USB-powered operation for lab-based thermal characterization.

For engineers reviewing the STEVAL-IFS017V8 datasheet, STEVAL-IFS017V8 pinout, STEVAL-IFS017V8 application, or STEVAL-IFS017V8 equivalent, this board enables rapid validation of STTS2004 integration in embedded thermal management systems, RTC-temperature co-sensing setups, and industrial sensor node prototyping where supply flexibility and address scalability matter.

Technical Context

The daughter card implements the STTS2004 as a standalone I²C slave device with hardware-configurable address pins (A0, A1, A2) and an open-drain EVENT alert output. It includes selectable VDD voltage options (2.2 V, 2.3 V, 2.5 V, 2.7 V, 3.0 V, 3.3 V, 3.6 V) via jumper J3 and optional 7–10 V auxiliary supply routing to A0 via SW1.

Signal conditioning is provided by BAT54 Schottky diodes for level translation, TS3431 adjustable shunt reference for precision biasing, and 74V1G14 Schmitt-trigger buffer for clean EVENT signal conditioning - all supporting reliable interface with the host motherboard's I²C bus and GPIO lines.

Key Specifications

Availability

STEVAL-IFS017V8 is available at Aetrix Electronics and suitable for industrial sensor node development, embedded thermal monitoring systems, and RTC-temperature co-sensing validation requiring stable component supply and documented ST reference design integration.

Supply support for STEVAL-IFS017V8 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, sensors, power ICs, and analog/mixed-signal devices for industrial, automotive, and consumer applications.

This daughter card belongs to ST's STEVAL (ST Evaluation) platform family, engineered to accelerate hardware validation and firmware bring-up for ST sensor and timing ICs in system-level contexts.

FAQ

Does STEVAL-IFS017V8 require external power beyond USB?

No. The board draws power exclusively from USB (5 V), and its internal circuitry - including TS3431 reference and LDO-like regulation - generates the required 2.2–3.6 V VDD for the STTS2004. The 7–10 V option on SW1 is optional and only used when externally forcing a higher voltage onto the A0 pin for special configuration modes, not for main power.

Can multiple STEVAL-IFS017V8 boards operate on the same I²C bus?

Yes. Each board's STTS2004 address is set independently via A0–A2 jumpers, enabling up to eight identical daughter cards on one I²C bus without address conflict. The board's fixed ID (0x0F) is for host identification, not bus addressing.

What is the role of the BAT54 diodes on this board?

The BAT54 Schottky diodes (D1–D4) provide bidirectional level shifting and ESD protection between the host motherboard's I²C lines (SCL_D/SDA_D) and the STTS2004, ensuring safe interfacing across different voltage domains and suppressing transient coupling during hot-plug events.

Is the EVENT pin on STEVAL-IFS017V8 actively driven or open-drain?

The EVENT pin is open-drain, matching the STTS2004's native #ALERT output. On the board, it connects through a 74V1G14 Schmitt-trigger inverter (U1) to produce a clean, debounced active-low interrupt signal (#ALERT_D) compatible with standard GPIO inputs on the host motherboard.