Abaco Systems / VMIC VMIVME-3122-000 High-Performance 16-Bit Analog-to-Digital Converter (ADC)

The Abaco Systems / VMIC VMIVME-3122-000 is a 16-bit analog-to-digital converter card for VMEbus systems, delivering high-resolution data acquisition across up to 64 differential or single-ended input channels. Built for industrial and scientific instrumentation, it combines flexible channel configuration with programmable gain control and multiple trigger modes to meet diverse signal conditioning requirements.

– Technical Specifications

• Resolution: 16-bit A/D conversion
• Input Channels: Up to 64 differential or single-ended
• Conversion Rate: Software-selectable; maximum 100 kHz (high-performance) or 50 kSPS (standard)
• Scanning Modes: Program-selectable for 1, 8, 16, 32, 48, or 64 channels; auto-scanning with continuous digitization
• Gain Control: Software-controlled; fixed gain (×1 or ×10) or individual channel programming
• Trigger Modes: Software trigger, external trigger (P2 connector), plus one additional mode
• Input Bandwidth: 5 kHz typical (standard, unfiltered); 40 kHz typical (high-performance, unfiltered) at 20 Vp-p
• Access Time: 600 ns maximum (non-scanning); 600 ns typical / 1.2 µs maximum (scanning)
• Input Protection: High-performance option includes 22 MΩ pull-to-ground per channel; standard option requires user common-mode control
• Data Storage: Dual-port registers with configurable buffer and block sizes
• Calibration: Automatic on system or software reset; user-initiated via register write to $000C
• VMEbus Compliance: A32/A24/A16 addressing; Supervisory/Non-privilege access; D8 and D16 data transfers

– Key Features

• Low-pass input filtering available
• Programmable offset correction and channel gain storage
• Automatic gain application post-calibration
• Continuous VMEbus data access during scanning operations

– Typical Applications

Multi-channel sensor data acquisition, industrial process monitoring, scientific instrumentation requiring sustained high-resolution sampling.

– Compatibility & Integration

Full VMEbus integration with configurable address space and access modes. Compatible with signal conditioning boards for diverse sensor types.