Measurement Computing PCIM-DDA06/16 Analog Output and Digital I/O PCI Board

The Measurement Computing PCIM-DDA06/16 is a PCI half-card analog output and digital I/O board engineered for data acquisition and control applications requiring precise signal generation and digital interfacing. It delivers 6 channels of 16-bit analog output with switch-selectable ranges (±10 V, ±5 V, 0–10 V, 0–5 V) and 24 bits of TTL-compatible digital I/O via an 82C55 interface. Factory-tested accuracy of ±2.0 LSB typical (±1.0 LSB) supports applications demanding high linearity across gain, offset, integral linearity, and differential linearity error components.

– Technical Specifications

• Analog Output: 6 channels, 16-bit resolution
• Output Ranges: Bipolar ±10 V / ±5 V; Unipolar 0–10 V / 0–5 V (switch-selectable per DAC)
• Accuracy: ±2.0 LSB maximum (factory tested); ±1.0 LSB typical
• D/A Converter: AD660BR
• Output Buffer: OP27
• Digital I/O: 24 bits TTL level, 82C55 interface; sources/sinks ~2.5 mA per line (TTL logic switching; external buffering required for relay/LED loads)
• Update Modes: Simultaneous or individual channel update (jumper-configurable)
• Update Rate: 150 kHz typical with Universal Library cbAOut() function on 500 MHz Pentium III; ±70 ns jitter
• Form Factor: PCI half-card, 174.4 × 100.6 × 11.65 mm
• Connector: 37-pin male signal connector

– Key Features

• Dual update modes enable synchronized multi-channel output or independent DAC control
• Switch-selectable output ranges reduce external circuitry requirements
• On-board OP27 buffers ensure clean analog signal delivery
• 24-bit digital I/O with TTL-level I/O for control and status signals

– Typical Applications

• Industrial process control and instrumentation
• Real-time signal simulation and waveform generation
• Multi-channel DAQ systems requiring analog outputs and discrete control
• System integration in PCI-based test and measurement platforms

– Compatibility & Integration

Full connector and software compatibility with the legacy CIO-DDA06/16 ISA board supports migration to PCI-based systems. Measurement Computing’s Universal Library, InstaCal calibration utility, and MCC DAQ software provide cross-platform programming and configuration support.