Abaco Systems / VMIC VMIVME-3122-010 High-Performance 16-Bit Analog-to-Digital Converter (ADC)

The Abaco Systems VMIVME-3122-010 is a 16-bit Analog-to-Digital Converter module for VMEbus systems, delivering high-resolution data acquisition across up to 64 configurable analog input channels. This card supports differential and single-ended inputs with selectable voltage ranges (±2.5 V, ±5 V, ±10 V, 0 to +5 V, 0 to +10 V) and conversion rates up to 100 kHz on the option or 50 kHz on standard performance. The module features software-selectable programmable gain (×1 or ×10) per channel or globally, adjustable scan modes including autoscan and single-scan operation, and a dual-port data buffer ranging from 16 to 1,024 words.

Channel block size is configurable as 1, 8, 16, 32, or 64 channels, with scanning rates software-selectable from 381 Hz to either 100 kHz (high-performance) or 50 kHz (standard). Access time is 600 ns typical for scanning modes and 600 ns maximum for nonscanning. The option includes common-mode protection via 22 MΩ pull-down resistors on each input; standard performance requires user-controlled common-mode voltage management.

Multiple boards - up to 16 - can be synchronized for simultaneous scan initiation. Optional low-pass input filters improve signal quality.

Technical Specifications

• Resolution: 16-bit


• Channels: 16, 32, 48, or 64 (configurable differential or single-ended)


• Input voltage ranges: ±2.5 V, ±5 V, ±10 V, 0 to +5 V, 0 to +10 V


• Maximum conversion rate: 100 kHz (high-performance) or 50 kHz (standard)


• Input bandwidth: 5 kHz (standard) or 40 kHz (high-performance)


• Access time (scanning): 600 ns typical, 1.2 µs maximum


• Access time (nonscanning): 600 ns maximum Signal Conditioning


• Programmable gain: ×1 or ×10, per-channel or fixed across all channels


• Common-mode protection (high-performance): 22 MΩ pull-down resistors


• Optional low-pass input filters available Operating Modes


• Scan modes: Autoscan, Single Scan, Continuous, Burst


• Trigger modes: Three supported


• Scanning rate range: 381 Hz to 100 kHz (high-performance) or 381 Hz to 50 kHz (standard)


• Channel block sizes: 1, 8, 16, 32, or 64


• Data buffer: 16 to 1,024 words dual-port

Key Features

• VMEbus compliance (A16, A24, A32 address spaces; Supervisory and Non-privilege modes)


• Up to 16-board synchronization capability


• 96-pin DIN nonlatching or 64-pin DIN latching input connectors


• 6U (4HP) single-slot Eurocard form factor, 9.2 in. (233.4 mm) height

Typical Applications Industrial control systems, scientific research instrumentation data acquisition environments requiring accurate analog-to-digital signal conversion.

Compatibility & Integration The VMIVME-3122-010 integrates directly into VMEbus-based systems with flexible address space configuration and multiple synchronization options for multi-board deployments.