PCIe-DA16-16 Family Analog Output Card


  • 16-channel, 16-bit, digital-to-analog PCI Express Card
  • Software / Hardware compatible with PCI-DA12-16
  • >125k conversions per channel per second
  • Dip-switch selectable analog output ranges of 2.5V, 5V, 10V, ±2.5V, ±5V, ±10V, 4-20mA
  • Individual or simultaneous update of the DACs
  • DACs restricted at power-on to prevent spurious outputs
  • 24-bits of digital I/O
  • Three 16-bit down counters (emulated 82C54)
  • Can use the counter-timer to generate DAC updates, and/or IRQs
  • VCCIO voltage available to the user via 0.5A resettable fuse
  • RoHS Available
  • Designed, made, supported, and manufactured in the USA
  • Support for Wind River VxWorks (call for ordering information)
Last updated on November 2, 2023, 6:22 pm


In Stock
SKU: N/A Categories: , Tags: ,


The PCIe-DA16-16 series are x1 10.5” cards that can be installed in long PCIe slots. They contain sixteen or eight digital-to-analog converters (DACs), 24 bits of digital I/O, and three 16-bit counter/timers.

The DACs can be updated individually or simultaneously. The board features a variety of unipolar and bipolar voltage ranges or a 4-20 mA current range (sink) for each DAC giving the user a variety of options. To ensure that there will not be excessive outputs to external circuits when the board is powered on, automatic circuits limit analog outputs to zero volts until initialized via software command.

Each DIO line is buffered and capable of up to 32mA source/sink. The VCCIO logic level is globally configured via jumper selection as 5V or 3.3V. Also, ports A, B, CHi, and CLo are factory configured as pull-up (to the selected VCCIO) through 10kΩ resistor networks. These groups can be configured for pull-down as a factory option.

The card includes an emulated 82C54 counter/timer which has three 16-bit programmable down counters. These are configured as Event counters (See Block Diagram) and can also be used as a frequency source derived from an onboard 1 MHz clock. These counters can generate IRQs at a programmed frequency, and/or initiate DAC updates. This allows for very precise timing of waveform generation.

The DAC’s connections are made at a 37-pin D-subminiature Male connector on the card mounting bracket.
The digital I/O and the counter/timer signals connections are made through a 40-pin 0.1″ IDC header and a ribbon cable to a second bracket that can install alongside the first.


The card is supported for use in most operating systems and includes a free Linux and Windows compatible software package. This package contains sample programs and source code in C#, Delphi, and Visual C++ for Windows. Also provided is a graphical setup program in Windows. Linux support includes installation files and basic samples for programming from user level via an open source kernel driver. Third party support includes a Windows standard DLL interface usable from the most popular application programs. Embedded OS support includes the family of Windows Operating Systems including IoT. ACCES is also now offering a VxWorks driver/library for the ultimate real-time process monitoring and control solution.


Data Sheets



Drivers and Downloads

Full list of available Downloads: Software Packages, Drivers, Manuals, and other documents

Information about our Free Software packages:

ACCES is proud to provide a full suite of software support with every Data Acquisition product. We are committed to supporting the most popular operating systems and platforms for our customers. Currently we are actively supporting XP -> 10, both 32 & 64 bit, including “Server 2008,” “Embedded,” and “Compact” flavors for all plug-and-play products including PCI, PCI Express, USB, and more. Many products continue to ship with support for additional operating systems such as DOS, Windows 95, 98, Me, NT4, and 2000.


Among the software we deliver with our products are sample programs in a wide variety of programming languages. These samples are used to demonstrate the software interfaces to our products — and many can be used as-is in your production environments, or to test functionality of the devices out-of-the-box. We’re currently actively supporting sample programs in Microsoft Visual C#, Visual Basic, Delphi, and Visual C/C++, with many devices including samples in Borland C/C++ 3.1 for DOS. Additionally we provide National Instruments LabVIEW compatible DLLs and many demonstration VIs for our devices.


Drivers for various operating systems are also provided, including active support for Windows XP -> 10 — all in both 32-bit and 64-bit flavors, and including consumer, server, and embedded varieties — as well as the 2.6 and newer Linux kernels and recent OSX / macOS versions. Many products continue to ship with driver support for Windows 95, 98, Me, NT4, and Windows 2000, but support for these operating systems is considered deprecated.

Setup Programs and Utilites

Our Data Acquisition devices also include a graphical setup utility that walks you through the process of configuring any option jumpers or switches on the device, as well as explaining a little about the various connectors present.

Many devices also include utility programs – little tools to make your use of the device easier, such as EWriter, a program that allows you to read and write data in the user-accessible EEPROM locations on all our USB data acquisitition products; or WinRISC, a “Really Incredibly Simple Communications” terminal program that lets you get started instantly with serial devices.

“Register Level” Documentation

Besides all this software in all these languages and operating systems ACCES has a policy of open and transparent development: none of our lowest-level “register” interfaces are hidden from you — we document every register in every bus card, every command in every serial board, and every usb control transfer in every USB Data Acquisition board. These lowest-level interfaces allow you to develop for our products in ANY operating system or language, regardless of our actively supporting it or having a driver for it. We have customers actively developing in ADA, Android, Python, Java, MATLAB, Solaris, and more, just by referring to our complete low-level interface documentation! And we provide the full source code to all of our drivers, regardless of operating system, to give you an even bigger head start in your own development tasks.

No Fees or Royalties

All of this software is provided at no additional charge, and is licensed under any of a variety of flexible — and royalty free — options. Check out our software license explanation if you’d like more information.

Custom Software

ACCES also offers Custom Software Services for our products. Our prices are unbelievably low, often as inexpensive as free! If you need something tweaked to support your needs, or an entire enterprise application developed from scratch, it is definitely worth your time to inquire with us, first.

Further information about available ACCES Software:

Redistributing Windows Drivers
A list of ACCES drivers and the files that compose them under different versions of Windows, so you can easily redistribute ACCES cards and drivers.


ACCES has successfully partnered with Wind River to bring our entire line of PCI and PCI Express Serial Communication cards to VxWorks 7! All ACCES plug-and-play serial cards are now supported with our VxWorks driver, including RS232, RS422, RS485 (2- and 4-wire) and baud rates up to 10Mbps.

Designed as an update to the existing vxbPciNs16550Sio.c driver, we’ve added support for ×8 baud rates, proper handling of the unique register location of the 4th port in the Pericom PI7C9X7954 UART, and configuring the serial protocol from your application software.

With this driver suite all ACCES PCI, PCI Express, PCI Express Mini Card, M.2, PCI-104, PCIe/104, and all related “PCI Style” plug-and-play serial cards will detect and install as standard VxWorks SIO ports.

Analog Outputs

  • Channels: 16
  • Resolution: 16 or 12 bits
  • >125k conversions per channel per second
  • Unipolar Ranges:0-2.5, 0-5, 0-10 VDC
  • Bipolar Ranges:±2.5, ±5.0, ±10.0 VDC
  • Current Range: 4-20 mA (with external excitation voltage of 8-36VDC)
  • Output Drive: 5 mA maximum
  • Output Resistance: Less than 0.1Ω
  • Relative Accuracy: ±1LSb max, ±½LSB typical
  • Diff.Linearity: ±½LSB integral non-linearity over rated temperature range
  • Monotonicity: 16 bits over operating temp
  • Settle time: 5 usec ¼- to ¾-span and ¾- to ¼-span, to ±2LSB


  • Type: Emulated 82C54 programmable counters
  • Counter size: 16-bit
  • Logic level: VCCIO
  • On-board clock: 1MHz
  • Clock Pulse Width: see 82C54A datasheet

Digital I/O

  • Lines: 24; Ports A, B, CHi and CLo
  • Type: 8255 compatible
  • Pull-up/-down: 10k (pulled-up by default)
  • Logic Levels: VCCIO jumper selectable
  • VCCIO = 5V
    • Input Low: ≤1.5V @ ≤2µA
    • Input High: ≥3.5V @ ≤2µA
    • Output Low: ≤0.55V @ 32 mA
    • Output High: ≥ 3.8V @ 32mA
  • VCCIO = 3.3V
    • Input Low: ≤0.8V @ ≤2µA
    • Input High: ≥2.0V @ ≤2µA
    • Output Low: ≤0.55V @ 24 mA
    • Output High: ≥ 2.4V @ 24mA


  • Operating Temperature: 0 to +70°C
  • Storage Temperature: -55 to +150°C
  • Humidity: 5% to 95% without condensation
  • Size: 10.5″ (267 mm) long

DC Power Output

  • VCCIO VDC at 500 mA is available on the 37-pin connector.

Regulatory Compliance

  • This product is in full compliance with CE requirements.
ModelDescriptionPrice (USD)

16 channel, 16 bit, Analog Output PCIe Card


8 channel, 16 bit, Analog Output PCIe Card


16 channel, 12 bit, Analog Output PCIe Card


8 channel, 12 bit, Analog Output PCIe Card

Direct Connect Terminal Cards
ADAP37F-MINI $40 Direct Plug Spring Cage Terminal Adapter with DB37 female, for analog outs
ADAP37M-MINI $40 Direct Plug Spring Cage Terminal Adapter with DB37 male, for digital I/O
External Cabling
CAB37-18 $25 Ribbon cable, DB37 female to female connectors, 18″
CAB37-36 $29 Ribbon cable, DB37 female to female connectors, 36″
CAB37MF-36 $32 Ribbon cable, DB37 male to female connectors, 36″
CAB37FM-18 $29 Ribbon cable, DB37 male to female connectors, 18″
Cable Connect Terminal Cards
STB-37 $39 DIN-rail mountable screw terminal board with DB37 male connector
STA-37 $79 Wireable screw terminal board with DB37 connectors
Model Options
-RoHS Call RoHS compliant version
-T Call Extended temperature operation (-40° to +85°C)