The Kontron/Thales/Matrix MD-DAADIO8NAP is a double-height VMEbus combination board integrating analog-to-digital converters, digital-to-analog converters, and programmable input/output functions for data acquisition and distribution in embedded systems. Selective population of functional sections enables cost-effective configuration tailored to specific application requirements, reducing system complexity versus multi-board implementations.
## Technical Specifications
**Analog-to-Digital Converter**
• Resolution: 12-bit
• Conversion time: 12 µs or 8 µs typical
• Input configurations: 32 single-ended, 32 pseudo-differential, or 16 differential inputs
• Input voltage ranges: 0–10 V, ±5 V, ±10 V (jumper selectable)
• Maximum tolerable input voltage: ±35 V
• Programmable gains: 1, 2, 4, 8, 16, 10, 20, 40, 80, 160 (software controlled, dynamically changeable per channel)
**Digital-to-Analog Converter**
• Resolution: 12-bit
• Output channels: 8 voltage channels
• Output ranges: 0–5 V, 0–10 V, ±5 V, ±10 V per channel (jumper selectable)
• Data format: Straight binary, offset binary, or two’s complement (independently jumpered)
• Multiplying DAC with external reference capability
• Voltage-to-current adapter supporting 4–20 mA, 0–20 mA, or 5–25 mA operation
• Output short circuit protection: Indefinite duration (voltage and current)
• Remote sensing: User selectable per channel
**Programmable Input/Output**
• Total I/O lines: 48 TTL lines
• Port configuration: Six ports, individually software configurable as input or output
• Interrupt lines: 8 on Port A, individually maskable and configurable for pattern recognition
## Key Features
• Single board consolidates multiple analog and digital functions
• Jumper-selectable input modes and voltage ranges accommodate diverse signal conditioning needs
• Dynamic gain adjustment between channel samples optimizes measurement range per acquisition
• All DAC outputs drive to zero on reset independent of operating mode
• Software-controlled port configuration eliminates hardware redesign cycles
## Typical Applications
• Real-time data acquisition systems with mixed analog/digital I/O requirements
• Embedded process control and instrumentation
• VMEbus-based test and measurement platforms requiring flexible signal routing
## Compatibility & Integration
VMEbus double-height form factor. Integrates with standard VMEbus backplanes and crate systems.
