STMicroelectronics STEVAL-AKI002V1

Overview

STEVAL-AKI002V1 from STMicroelectronics is an evaluation board designed to characterize the ADC1283 - an 8-channel, 12-bit successive approximation register (SAR) analog-to-digital converter with 50–200 ksps sampling rate, 2.7–5.5 V supply range, SPI serial interface, and integrated track-and-hold. It supports standalone operation or integration with the NUCLEO-L476RG for real-time signal processing and PC-based GUI control via STSW-AKI.

For engineers reviewing the STEVAL-AKI002V1 datasheet, STEVAL-AKI002V1 pinout, STEVAL-AKI002V1 application, or STEVAL-AKI002V1 equivalent, this board enables rapid validation of ADC1283 performance in motor control feedback loops, sensor signal acquisition, and industrial data logging systems where channel flexibility, low-power SAR conversion, and SPI interoperability are critical.

Technical Context

The board implements a complete signal chain around the ADC1283 IC, including configurable input routing via jumper-selectable reference voltage (AVCC or external), decoupling networks (C02/C04/C21/C24/C31/C32), and precision biasing (R21/R22/R23/R24). All analog inputs (IN0–IN7) are accessible through color-coded test points (green/red/black) and header J07/J12.

It provides dual power domains (AVCC/DVCC) with dedicated ground planes (AGND/DGND), op-amp buffering (U31: TSV772 dual rail-to-rail amplifier), and reference conditioning (U21: TS3431 adjustable shunt reference + U22: TSX711 precision buffer), ensuring clean analog front-end operation per ADC1283's specification.

Key Specifications

Availability

STEVAL-AKI002V1 is available at Aetrix Electronics and suitable for motor control development, industrial sensor interface validation, and embedded data acquisition system prototyping requiring stable component supply and traceable evaluation hardware.

Supply support for STEVAL-AKI002V1 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, analog ICs, power devices, and sensors for industrial, automotive, and consumer applications.

This board belongs to ST's STEVAL (ST Evaluation) series - purpose-built to accelerate adoption of ST's precision analog and mixed-signal ICs through validated, GUI-supported, plug-and-play hardware platforms.

FAQ

Does STEVAL-AKI002V1 require external power or can it operate standalone?

Yes, it operates standalone using a 5 V USB supply or external DC source via the VIN header. Onboard LDOs generate AVCC (3.3 V) and DVCC (3.3 V) with separate analog/digital ground planes. No additional power regulation circuitry is needed for basic ADC1283 evaluation.

Which microcontroller boards are natively supported for host interfacing?

The board is mechanically and electrically optimized for the NUCLEO-L476RG via its Arduino UNO R3-compatible headers and pre-routed SPI signals (SPI1_MOSI/SPI1_MISO/SPI1_SCK/SPI1_CS). Pin mapping matches STM32L476RG's default SPI1 peripheral configuration without remapping.

Can the reference voltage be changed during operation?

No - reference selection (AVCC or external) is hardware-jumpered (J08 position) and fixed before power-up. The jumper sets the REF pin connection on ADC1283 (pin 2); changing it requires power-down, physical repositioning, and reset to avoid reference instability or latch-up.

Is the STSW-AKI GUI compatible with Windows, Linux, or macOS?

STSW-AKI is officially supported only on Windows 7/10/11 (32- and 64-bit). It requires ST-LINK/V2-1 firmware v2.33+ and .NET Framework 4.7.2. No native Linux or macOS version exists; virtualization or Wine is unsupported and may cause USB enumeration or timing issues with real-time sampling.