Abaco Systems / VMIC VMIVME-3122-200 High-Performance 16-Bit Analog-to-Digital Converter (ADC)

The Abaco Systems / VMIC VMIVME-3122-200 is a 16-bit analog-to-digital converter (ADC) VME card engineered for precision data acquisition in demanding signal digitization applications. This module delivers software-selectable conversion rates up to 100 kSPS with support for up to 64 differential or single-ended input channels, dual-port data buffering, and programmable gain control - making it suitable for systems requiring high-fidelity analog signal measurement within VME-based architectures.

Technical Specifications

• Resolution: 16-bit


• Conversion Rate: Software-selectable, up to 100 kSPS maximum (100 kHz); standard performance option at 50 kSPS


• Input Channels: Up to 64 differential or single-ended inputs


• Input Bandwidth: option: 40 kHz typical (20 Vp-p, no filter); standard performance option: 5 kHz typical (20 Vp-p)


• Data Registers: 1024 dual-port registers for continuous scanning and VMEbus read access


• Gain Control: Software-controlled, selectable x1 or x10 per channel


• Access Time: Non-scanning 600 ns maximum; scanning 600 ns typical, 1.2 µs maximum


• Input Filters: Low-pass filters available with ±25% cutoff frequency tolerance


• Common-Mode Protection: 22 MΩ pull-down resistor to ground (option)

Key Features

• Programmable channel scanning (1, 8, 16, 32, 48, or 64 channels selectable)


• Automatic continuous digitization of selected channels with dual-port buffering


• Three trigger modes: software trigger, external TTL trigger via P2 connector, and external synchronization


• Multi-board synchronization capability supporting up to 15 boards via P2 trigger output


• Full VMEbus read access to data registers during continuous operation

Typical Applications High-speed test and measurement systems, avionics instrumentation, industrial process monitoring, and defense telemetry requiring synchronized multi-channel analog signal acquisition within VME environments.

Compatibility & Integration Designed as a VME Analog I/O Input Board compatible with VMEbus system architecture and supporting concurrent board synchronization through external trigger signaling.