STMicroelectronics EVALSTISO62XV1

Overview

EVALSTISO62XV1 from STMicroelectronics is a dual-channel digital isolator evaluation board supporting SO8N and SO8W package variants of the STISOxxx isolator family, featuring 6 kV galvanic isolation, 5 V supply capability, and SMA/through-hole signal interface points for high-fidelity timing and data integrity testing in isolated communication systems.

For engineers reviewing the EVALSTISO62XV1 datasheet, EVALSTISO62XV1 pinout, EVALSTISO62XV1 application, or EVALSTISO62XV1 equivalent, this board enables direct validation of channel-to-channel propagation delay matching, common-mode transient immunity (CMTI), and high-speed signal integrity (up to 100 Mbps) under split-ground and mixed-voltage domain conditions.

Technical Context

The board hosts two unpopulated sockets-one for STISOxxx in narrow SO8 (SO8N) and one for wide SO8 (SO8W)-enabling side-by-side comparison of package-dependent thermal and EMI performance. Each socket provides independent VDD1/VDD2, GND1/GND2, and A/B channel access via 2-pin terminal blocks and SMA connectors.

All signal paths include 50 Ω series termination resistors (R3, R6, R9, R12) and 15 pF AC-coupling capacitors (C3–C4, C7–C8) to support controlled-impedance test setups. Test points (TP1–TP4) allow non-invasive probing of input/output waveforms across both isolation barriers.

Key Specifications

Availability

EVALSTISO62XV1 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, motor drive gate driver isolation, medical patient-monitoring interfaces, and EV battery management system (BMS) signal conditioning requiring stable component supply and rapid prototyping validation.

Supply support for EVALSTISO62XV1 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, Switzerland, designing and manufacturing microcontrollers, analog ICs, power devices, and sensors for industrial, automotive, and consumer applications.

The EVALSTISO62XV1 belongs to ST's evaluation platform portfolio for its STISO digital isolator product line-engineered specifically to validate high-CMTI, low-propagation-delay isolation in real-world noise-prone environments such as factory automation and renewable energy inverters.

FAQ

Does EVALSTISO62XV1 include populated STISO isolators?

No. The board ships with two unpopulated sockets-one for SO8N and one for SO8W packages-allowing users to install their own STISOxxx samples (e.g., STISO621, STISO622) for functional validation. This supports flexible evaluation across multiple part numbers within the same family without hardware redesign.

What is the purpose of the 15 pF capacitors (C3, C4, C7, C8)?

These 15 pF ceramic capacitors provide AC coupling on all four channel I/O paths (A1/B1 and A2/B2), blocking DC offset while preserving high-frequency signal integrity up to 100 MHz. They are placed adjacent to SMA connectors to minimize parasitic inductance and maintain impedance continuity in fast-edge digital applications.

Can EVALSTISO62XV1 be used to measure common-mode transient immunity (CMTI)?

Yes. The board's split ground planes (GND1/GND2), independent VDD supplies, and accessible isolation barrier nodes enable direct CMTI testing per IEC 61000-4-4 using a pulse generator and differential probe setup. The 6 kV isolation rating and thick-oxide technology support validated CMTI > 100 kV/µs per STISO datasheets.

Are the SMA connectors pre-mounted and functional out-of-box?

Yes. CN1–CN4 are fully assembled 50 Ω SMA connectors rated for DC–6 GHz operation. They are soldered to the board and electrically connected to U1 and U2 I/O pins via controlled-impedance traces, enabling immediate high-speed signal injection and measurement without modification or adapter requirements.