Abaco Systems / VMIC VMIVME-3111-000 Analog-to-Digital Converter (ADC) Module

The Abaco Systems/VMIC VMIVME-3111-000 is a 12-bit analog-to-digital and digital-to-analog converter module purpose-built for VMEbus systems. It delivers integrated signal conversion in a single card, eliminating the need for separate input/output modules in process control, simulator, and supervisory control applications. With flexible channel configurations supporting up to 48 analog inputs and programmable gain stages, the module adapts to diverse signal conditioning requirements.

Technical Specifications

• 12-bit resolution


• 32 single-ended or 16 differential inputs via P2 connector; optional 16 single-ended inputs via P3 front panel connector


• Jumper-selectable ranges: 0 to +5 V, 0 to +10 V, ±2.5 V, ±5 V, ±10 V


• Program-selectable gains: x1, x10, x100, x500


• Input impedance: 10 MΩ minimum


• Autocalibrable zero offset: ±50 µV at x500 gain


• Common-mode rejection: 100 dB


• Overvoltage protection: ±40 V


• A/D conversion time: 19 µs


• Acquisition time varies by gain: 8 µs (x1), 20 µs (x10), 50 µs (x100), 120 µs (x500)


• Maximum throughput: 53 kHz in pipelined mode Analog Outputs:


• 12-bit resolution


• Jumper-selectable ranges: 0 to +5 V, 0 to +10 V, ±2.5 V, ±5 V, ±10 V


• Accuracy: ±0.03 percent


• Settling time: 25 µs to 0.01 percent


• Output current: ±10 mA over full range


• Source impedance: 0.2 Ω maximum


• Protection against sustained shorts and transients to ±40 V

Key Features

• Monotonic performance across full temperature range


• Conversion initiation via software or external pulse


• End-of-conversion detection by polling or interrupt


• Optional low-pass filters at 6 Hz, 9 Hz, or 36 Hz cutoff


• Optional 250 Ω current loop termination resistors


• Jumper-selectable converter codes: straight binary, offset binary, two's complement


• Three precision on-board reference voltages for self-test

Compatibility & Integration P3 connector integrates with VMIVME-3V and VMIVME-5V series signal conditioning assemblies, enabling modular analog front-end configurations within VME environments.