Keithley KPCI

The Keithley KPCI series comprises high-performance PCI-based data acquisition boards engineered for analog and digital I/O in demanding measurement applications. These boards deliver 16-bit and 12-bit resolution variants with sampling rates ranging from 100 kS/s to 1.25 MS/s, configurable input ranges spanning ±1.25 V to ±10 V, and programmable gains up to 800×. Built for scientific, engineering, and industrial environments, KPCI boards integrate precision analog acquisition with D/A output capability and flexible thermal stability across extended operating ranges.

## Technical Specifications

**Analog Input**
• Resolution: 16-bit (KPCI-3107/3108, KPCI-3116) or 12-bit (KPCI-3110, KPCI-1801HC/1802HC)
• Sampling rates: Up to 100 kS/s (KPCI-3107/3108), 250 kS/s (KPCI-3116), 333 kS/s per channel (KPCI-1801HC/1802HC), 1.25 MS/s (KPCI-3110)
• Input ranges: ±1.25 V to ±10 V (bipolar); 0–1.25 V to 0–10 V (unipolar)
• Programmable gains: 1 to 800× depending on model
• Input impedance: >1 GΩ ∥ 200 pF (KPCI-3107/3108); 100 MΩ ∥ 10–100 pF (KPCI-3110); >100 MΩ ∥ 90 pF (KPCI-1801HC/1802HC)
• Input bias current: ±1 nA (KPCI-3107/3108), ±20 nA (KPCI-3110), ±40–60 nA (KPCI-1801HC/1802HC)
• Overvoltage protection: ±15–35 V continuous (varies by model)
• Accuracy: 0.021% of reading ± 1.540 mV @ 23 °C (KPCI-3107/3108); ±1 LSB integral linearity (KPCI-3110/3116)
• Temperature coefficients: 310 µV/°C offset, 60 ppm/°C gain (KPCI-3107/3108); ±30 ppm/°C (KPCI-3110)

**Analog Output**
• Resolution: 12-bit D/A
• Output range: ±10 V
• Sampling rates: Up to 500 kS/s (KPCI-3110), 200 kS/s (KPCI-3116)
• Output current: ±5 mA maximum
• Output impedance: 4 Ω
• Maximum capacitive load: 100 pF at 100 kHz, 100 µF (KPCI-1801HC/1802HC)

## Key Features

• Software-configurable input ranges (24 ranges on KPCI-3107/3108)
• Selectable input impedance coupling
• Power-up output at 0 V ±75 mV (KPCI-3107/3108)
• Multi-gain architecture accommodates low-signal and high-gain measurement tasks

## Typical Applications

Precision data acquisition, signal conditioning, sensor integration, process monitoring, and closed-loop control systems in laboratory and field deployment.

## Compatibility & Integration

PCI form factor integration into standard computer systems supporting analog and digital measurement workflows.