ADC100 DC Arc Detection System

Overview

The ADC100 DC Arc Detection System is an industrial-grade real-time arc monitoring instrument engineered for high-reliability plasma process control in physical vapor deposition (PVD) environments. It operates on the principle of high-speed transient voltage and current signature analysis, detecting microsecond-scale arc events by continuously sampling DC power supply output with a maximum acquisition rate of 100 kS/s (100,000 samples per second). Unlike conventional over-current or thermal trip relays, the ADC100 identifies arcs through their characteristic electromagnetic transients—rapid voltage collapse and current surge—enabling sub-millisecond response times essential for protecting sensitive sputtering targets, cathodes, and substrate coatings. Designed specifically for integration into semiconductor fab toolsets, flat-panel display (FPD) manufacturing lines, and photovoltaic thin-film deposition systems, the ADC100 provides deterministic arc event logging and programmable mitigation triggers to minimize process interruption and target damage.

Key Features

• Real-time DC arc detection with configurable sensitivity thresholds across voltage and current channels
• Simultaneous dual-channel high-fidelity sampling at up to 100 kS/s per channel, supporting time-synchronized waveform capture
• Programmable arc response logic including pulse suppression, power supply interlock signaling, and event-triggered data dump
• Ruggedized industrial enclosure rated for cleanroom-compatible operation (ISO Class 5 compatible mounting options available)
• Galvanically isolated analog inputs (±10 V, ±5 A range standard) with 16-bit resolution ADCs for noise-immune signal integrity
• Embedded non-volatile memory for local storage of up to 10,000 arc event records with timestamp, amplitude, and duration metadata

Sample Compatibility & Compliance

The ADC100 interfaces directly with standard DC magnetron sputtering power supplies (e.g., AE Pinnacle+, MKS ENI D Series, HIPOTRONICS DCS units) via analog monitor outputs and digital I/O. It supports both negative DC and pulsed-DC (MF/RF-superimposed) configurations common in reactive sputtering processes. The system complies with CE marking requirements under the EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU. Its hardware design adheres to SEMI S2-0217 safety guidelines for semiconductor manufacturing equipment and meets functional safety considerations aligned with IEC 61508 SIL-2 for protective function implementation. Data logging behavior satisfies basic traceability requirements for ISO 9001:2015 and ISO 14001:2015 quality and environmental management systems.

Software & Data Management

The ADC100 includes PC-based configuration and analysis software (Windows 10/11 compatible) supporting USB 2.0 and Ethernet (TCP/IP) communication. Users can define multi-level arc severity classifications (e.g., “warning”, “mitigation”, “shutdown”), assign custom alarm actions, and export event logs in CSV or XML format for integration into MES or SCADA platforms. Audit trail functionality records all parameter changes with user ID and timestamp, supporting GLP-aligned documentation practices. While not certified to FDA 21 CFR Part 11, the software architecture supports electronic signature-ready workflows when deployed within validated IT infrastructure governed by internal SOPs.

Applications

• Monitoring arc activity during Ti, Al, Cr, and ITO sputtering in advanced logic and memory wafer fabrication
• Preventing arcing-induced defects in high-resolution OLED and LCD panel production lines
• Ensuring stable deposition rates and film uniformity in CIGS and CdTe solar cell manufacturing
• Diagnosing cathode poisoning, chamber contamination, and gas imbalance through statistical arc frequency trending
• Supporting predictive maintenance programs by correlating arc event density with target erosion profiles

FAQ

What types of power supplies is the ADC100 compatible with?
The ADC100 accepts standard analog monitor outputs (0–10 V for voltage, 0–5 V or 4–20 mA for current) from most commercially available DC and pulsed-DC sputtering power supplies.
Does the ADC100 provide automatic arc suppression?
It does not suppress arcs directly but generates TTL-compatible trigger signals to initiate external mitigation—such as power supply ramp-down or shutter closure—within ≤200 µs of arc onset.
Can multiple ADC100 units be synchronized across a cluster tool?
Yes, via optional IRIG-B timecode input or PTPv2 over Ethernet, enabling cross-chamber arc correlation for root-cause analysis.
Is firmware update capability supported in-field?
Firmware updates are performed via USB or Ethernet using signed binary packages; version history and rollback support are included in the configuration utility.