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104-AIO16A and 104-AIO16E

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16-Bit, 16-Channel, PC/104 Multifunction Analog I/O Boards


  • 16-bit resolution A/D
  • Up to 500kHz sampling rate
  • 16 single-ended or 8 differential analog inputs
  • 10 input ranges, unipolar or bipolar
  • A/D starts from software, timer and external trigger
  • Single channel or scan A/D modes
  • On-board calibration reduces A/D converter offset and gain errors
  • Noise reduction with channel oversampling
  • Over-voltage protection of -40V to 55V
  • 1024 sample data FIFO for A/D
  • Two 12-bit D/A outputs and 16 high-current digital I/O lines
  • DAC error calibration
  • 16-bit programmable counter/timer


  • FIFO up to 4K sample
  • Programmable amplifier with gains of 1, 10, 100, and 1000
  • Onboard DC/DC converter enables operation from a single 5V power supply
  • Extended temperature operation (-40°C to 85°C)

The 104-AIO16A is a high-performance 16-bit resolution PC/104 board which provides speeds up to 500kHz for 16 single-ended or 8 true differential analog input channels. This multifunction board features an excellent price/performance value for precision PC/104-based data acquisition, control, or signal analysis of standalone environmental test stations, compact production test equipment, portable testers, avionics and other applications.

The 104-AIO16A features 10 standard analog input ranges. The module also offers on-board hardware oversampling for additional noise reduction. In addition to direct data transfers, the board’s ability to trigger the A/D in real time assures synchronized sampling that is unaffected by other computer operations—an essential requirement for signal, vibration and transient analysis where high data rates must be sustained for short periods of time. The A/D is supported by a 1024-sample FIFO (optional 2, 4k samples) for reducing processor overhead. Sixteen parallel bits of digital I/O and two 12-bit DAC outputs allow for a complete, high-performance data acquisition solution.

Analog to digital conversion starts or “A/D starts” are issued one of three ways: Software Start, Timer Start, or External Trigger Start. A/D starts are software configured to be either rising or falling edge. Additionally, A/D starts are software configured to be Single Channel or Scan. Single Channel samples data once from the next consecutive channel within the enabled set. A Scan samples data from all channels within the set at the fastest possible rate.


  • Equipment monitoring
  • Environmental measurements
  • Embedded OEM
  • Education/Laboratory
  • Portable
  • Industrial Automation
  • Precision Measurement
  • Analysis, Monitoring, and Control


Available accessories include a wide variety of cables and screw terminal boards for quick and easy connectivity.


The 104-AIO16A is supported for use in most operating systems and includes a free DOS, Linux and Windows 95/98/Me/NT/ 2000/XP/2003 compatible software package. This contains sample programs and source code in "C" and Pascal for DOS, and Visual Basic, Delphi, C Builder, and Visual C for Windows. Also included is a graphical setup program in Windows. Linux support includes installation files and basic samples for programming from any user level via an open source kernel driver.


Analog Inputs

  • Inputs: 16 single-ended or 8 differential
  • Resolution: 16-bit
  • Bipolar Ranges: ±0.5V, ±1V, ±2V, ±2.5V, ±5V, ±10V (jumper/software selectable)
  • Unipolar Ranges: 0-1V, 0-2V, 0-5V, 0-10V (jumper software selectable)
  • Sampling Rate: 500kHz “16A” version (maximum aggregate) 250kHz “16E” version (maximum aggregate)
  • Type: Successive approximation
  • Over Voltage Protection: -40 to 55V
  • A/D FIFO: 1024 16-bit wide samples, optional 2K, 4K
  • Calibration: Offset and gain values stored in EEPROM
  • Board Calibration: Programmable digital potentiometers to calibrate gain/offset errors
  • System Calibration: Program provided to calibrate entire system
  • Trigger Source: Software selectable - external trigger, programmable timer, program command, A/D start, Single Scan Start
  • Impedance: 1M Ohm
  • Crosstalk: 60dB @ 400kHz
  • Oversampling: 0-255 consecutive samples / channel (software selectable)

Analog Outputs

  • Outputs: 2
  • Resolution: 12 bit
  • Ranges: 0-5V, 0-10V (jumper selectable per channel)
  • Relative accuracy: ±2 LSB
  • Differential non-linearity: ±0.2 LSB
  • Conversion frequency: 100k conversions / second
  • Output current: 5mA
  • Calibration: Gain values stored in EEPROM
  • Simultaneous update: Yes

Digital I/O

  • Number of I/O: 16, programmable as inputs or outputs in groups of 8 (pulled up, 8255 compatible Port A and Port B only)
  • Input Voltage: Logic low: 0.0V min, 0.8V (max) Logic high: 2.0V min, 5.0V (max)
  • Input Current: ±1uA max
  • Output Voltage: Logic low: 0.0V min, 0.55V (max) Logic high: 2.0V min, 5.0V (max)
  • Output Current: Logic low: 24mA sink (max) Logic high: 24mA source (max)


  • Type: 82C54 programmable interval down counter
  • Available Counters: Counter 0
  • Input Frequency: 10MHz (max)
  • A/D Pacer Clock: 16-bit
  • Clock source: Internal 10MHz or externally supplied (software selectable; pulled-up)
  • Clock Period: 100ns (min)
  • Clock Pulse Width: high 30ns (min) / 40ns (min)
  • I/O Volts and Current: Same as Digital I/O
  • A/D Pacer clock: 16 or 32-bit
  • Clock Frequency: 10MHz


  • Power Required: Bus powered: 5VDC - 40mA (typical w/no external I/O connections) 12VDC - 24mA -12VDC - 23mA
  • DC/DC option: 5VDC at 180mA (typical w/no external I/O connections)
  • Operating Temp: 0 to 70°C, Optional -40 to 85°C
  • Storage Temp: -40 to 105°C
  • Humidity: 5% to 90% RH, without condensation


  • Analog I/O: P1, 26-pin right-angle header pins
  • Digital I/O and counter/timer: P2, 44-pin right-angle header pins
  • External power inputs P3, 8-pin right angle header pins

Part NumberPrice(USD)
104-AIO16A Advanced version, 16-Bit, 500kHz
104-AIO16E Economy version, 16-Bit, 250kHz
104-STA-16W PC/104 screw terminal board, includes two one inch ribbon cables
UTBK-44R Universal Screw Terminal Block with 44-pin right-angle mating connector
UTBK-26R Universal Screw Terminal Block with 26-pin right-angle mating connector
C104-26F-12 12-inch, 26-pin flat ribbon cable with female, keyed header connectors
C104-44F-12 12-inch, 44-pin flat ribbon cable with female, keyed header connectors
STB-26 Screw terminal board with 26 pin male header
STB-44 Screw terminal board with 44 pin male header
DIN-SNAP Mounts two (2) STB boards on a DIN rail
MP104-DIN Mount PC/104 stack or board to DIN rail
-DC Onboard DC/DC converter enables operation from a single 5V power supply
-T Extended temperature operation (-40°C to 85°C)
Call Programmable amplifier with gains of 1, 10, 100, and 1000
Call FIFO up to 4K sample

View / Download Manual (in .pdf format)

Acquisition Control Communications Engineering / Systems
USA Office

Address: 1480 Gulf Road, Suite 837,
PO Box 1364
Point Roberts, WA 98281

Western Canada - Vancouver BC

Tel:1.800.663.6001 or 1.604.925.6150
Address: 2454 Haywood Ave
West Vancouver, BC V7V 1Y1

Eastern Canada - Markham, Ontario

Tel:1.800.465.0164 or 1.905.513.7027