STMicroelectronics STEVAL-IDI009V1

Overview

STEVAL-IDI009V1 from STMicroelectronics is an evaluation board for passive infrared (PIR) sensor signal conditioning based on the TSU102 dual micropower operational amplifier, featuring 0.7–5 Hz bandpass filtering, 24 µA quiescent current in standby, Arduino UNO R3 and NUCLEO compatibility, and Fresnel lens-ready interface for motion detection in battery-powered home automation systems.

For engineers reviewing the STEVAL-IDI009V1 datasheet, STEVAL-IDI009V1 pinout, STEVAL-IDI009V1 application, or STEVAL-IDI009V1 equivalent, this board enables rapid validation of ultra-low-power PIR signal chain design-including filter response tuning, op-amp biasing, and microcontroller interface integration-without custom PCB development.

Technical Context

The board implements a two-stage active bandpass filter using both channels of the TSU102 op-amp to condition raw PIR sensor output, with center frequency ~1.3 Hz and Q-factor optimized for human-motion spectral signature. Input stage provides high-impedance sensing and DC offset rejection; second stage delivers clean AC-coupled detection pulses to MCU GPIO or comparator inputs.

Power architecture uses single 3.3 V or 5 V supply with local decoupling (22 µF, 10 µF, 470 nF), enabling direct connection to Arduino or NUCLEO boards. Quiescent current remains at 24 µA during idle state, rising only during active detection events due to minimal signal-path amplification.

Key Specifications

Availability

STEVAL-IDI009V1 is available at Aetrix Electronics and suitable for home automation, smart lighting control, battery-powered occupancy sensing, and IoT edge node development requiring stable component supply and validated reference designs.

Supply support for STEVAL-IDI009V1 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 management ICs, sensors, and analog/mixed-signal products for industrial, automotive, and consumer applications.

This board belongs to ST's STEVAL (ST Evaluation) series, developed specifically to accelerate proof-of-concept and firmware validation for intelligent sensing subsystems in energy-constrained environments.

FAQ

What PIR sensors are compatible with STEVAL-IDI009V1?

The board accepts standard 3-terminal PIR sensors with open-collector or voltage-mode output, including RE46C190, LHI778, and AMN series. It provides 3.3 V or 5 V bias via screw terminal and conditions signals through its dual-op-amp filter-no external level-shifting or gain adjustment is required for these devices.

Can STEVAL-IDI009V1 operate from a single coin cell?

Yes-its 24 µA standby current allows multi-year operation on CR2032 (220 mAh) when paired with duty-cycled MCU wake-up. The board draws no additional current during sleep mode beyond the TSU102's 2 µA per channel and passive RC network leakage, verified per DocID030027 Rev 2 schematic.

How do I connect STEVAL-IDI009V1 to an STM32 NUCLEO board?

Align the board's Arduino UNO R3 footprint with the NUCLEO's morpho headers, then stack using male-female headers. Power is supplied via NUCLEO's 5 V or 3.3 V pins; detection output appears on pin D2 (labeled "OUT" on silkscreen), which connects directly to EXTI-capable GPIO for interrupt-driven motion event handling.

Does the board include a Fresnel lens?

No-the STEVAL-IDI009V1 includes mounting holes and optical alignment marks for optional Fresnel lens integration but does not ship with one. Compatible lenses (e.g., 11161150SG) must be sourced separately and installed manually to widen detection area per application requirements.