High-Speed Multifunction Analog I/O Line with 4-20mA current outputs/inputs for Embedded Systems in PCI Express Mini Card (mPCIe) Form Factor

Offering 16-bit precision, simultaneous analog output and input, and flexible digital I/O

ACCES I/O Products, Inc. announces the release of the mPCIe-DAAI16-8F, a high-performance PCI Express Mini Card (mPCIe) multifunction analog I/O module that delivers 16-bit precision, simultaneous analog I/O, and flexible digital I/O — all in a small, rugged design ideal for embedded and OEM applications.

The mPCIe-DAAI16-8F integrates eight 16‑bit analog outputs supporting both voltage and current outputs, ideal for applications that need 4-20mA control. In addition to the flexible DAC outputs, eight 16-bit analog input channels, software‑selectable as eight single‑ended or four differential inputs, are included. An aggregate analog‑input sampling rate of up to 1 MSPS supports dynamic measurements, while each DAC channel can simultaneously perform hardware‑paced waveform playback up to 125 kSPS. A compact, double‑stack mPCIe Type F1 form factor with latching I/O connectors enables reliable operation in shock- and vibration-prone environments.

Factory options include extended temperature of -40°C to +85°C, current inputs (4-20mA, 10-50mA), voltage dividers for higher voltage inputs, and HART modem capability. Additional customization options include conformal coating, custom software/ product labeling, and more — even entirely new features tailored to your specific needs, enabled by our advanced FPGA-based design.

Key features of the mPCIe-DAAI16-8F Family include:

• PCI Express Mini Card (mPCIe) Type F1 (full length) with high-retention latching connectors vs shock/vibration
• Eight 16‑bit analog outputs with software selectable current (4–20 mA, 0–20 mA, 0–24 mA) and voltage ranges
• Hardware‑paced DAC waveform streaming up to 125 kSPS per channel using onboard FIFO + DMA architecture
• Eight 16‑bit analog inputs — software‑selectable as eight single-ended or four differential; up to 1 MSPS aggregate ADC rate
• Seven per‑channel programmable differential, bipolar input ranges
• Eight digital I/O pins (4 inputs, four outputs) can be used for triggering, status, or control, and optional digital integration features (pulse/PWM generation and measurement, edge‑specific IRQs, and counting)
• Flexible A/D triggering — start sources include software, internal timer, external start, and externally triggered timer start for precise synchronization.
• Onboard watchdog with status output
• Factory options: HART modem (on DAC #0), 4–20 mA / 10–50 mA ADC inputs, per-channel input voltage dividers, conformal coating, and more.
• Made in the USA; RoHS compliant.

All ACCES mPCIe (and M.2) cards feature high-retention latching connectors for shock and vibration mitigation, as well as an optional extended operating temperature range of -40°C to +85°C. The small size (mPCIe Type F1: 30mm x 50.95mm) allows for maximum performance in embedded applications where space is a valuable resource.

These cards are supported on most operating systems and include a free, Linux- and Windows-compatible software package. This package contains sample programs and source code in C# and Delphi for Windows. Linux support includes installation files and programming-level samples via our open-source kernel driver. Third-party support consists of a Windows-standard DLL API library usable with the most popular application programs. Embedded OS support includes the Windows family of Operating Systems, including IoT. ACCES also now offers a VxWorks driver/library for the ultimate real-time process monitoring and control solution.