Keithley DAS-1802HR-DA 16-Bit Multifunctional I/O Board

The Keithley DAS-1802HR-DA is a 16-bit multifunctional I/O board engineered for precision data acquisition and automated control in laboratory and production test environments. It combines dual 16-bit analog outputs, high-resolution single-ended analog inputs, and mixed-signal digital I/O into a compact PCI/ISA/PCMCIA form factor, delivering the analog and digital connectivity required for instrumentation integration without compromise on measurement accuracy.

## Technical Specifications

**Analog Inputs**
• 16-bit resolution at up to 100 kS/s sampling rate
• Single-ended configuration with four programmable gain settings (1, 2, 4, 8×)
• Overvoltage protection: continuous ±35 V on any single channel
• Input impedance: 100 nA maximum at 25 °C
• Sample-and-hold acquisition: 10 µs to 0.1% full-scale step
• Gain drift: ±50 ppm/°C of full-scale maximum
• Zero drift: ±10 µV/°C maximum

**Analog Outputs**
• Two independent 16-bit DAC channels, 2’s complement coding
• Output range: −10.0000 V to +9.999695 V
• Update rate: 500 kS/s
• Integral nonlinearity: ±1 LSB typical, ±2 LSBs maximum
• Differential nonlinearity: ±1 LSB typical, ±2 LSBs maximum
• Monotonic across all 16 bits

**Digital I/O**
• 3 LSTTL inputs: VIL 0.8 V max, VIH 2.0 V minimum
• 4 standard LSTTL outputs: VOL 0.5 V max at 8 mA, VOH 2.4 V minimum at −400 µA

**Memory & Support**
• 1024-location input FIFO buffer
• Expandable to 256 analog inputs via external chaining
• 256-location gain-channel queue
• +5.0 V ± 0.2 V reference output at ±2 mA load capacity and 50 ppm/°C temperature coefficient

## Key Features

• Rear-panel 50-pin D-type connector consolidates all analog and digital I/O
• Compact footprint: 4.25 in × 5.0 in (10.8 cm × 12.7 cm), 4 oz (120 g)
• Operating temperature: 0 to 50 °C; storage −20 to +70 °C
• Configured via DriverLINX utility; compatible with standard data acquisition software packages

## Typical Applications

• Automated test systems requiring simultaneous analog measurement and control
• Laboratory data logging with programmable gain switching
• Process monitoring and equipment characterization
• Sensor interfacing in mixed-signal environments

## Compatibility & Integration

Supports PCI, ISA, and PCMCIA bus architectures. Designed for Installation Category I and II per IEC 60664, suited for measurement and control signals at non-mains potential.