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DNA-AI-217

DNA-AI-217
16-Channel, 24-bit simultaneously sampling A/D board
 
The DNA-AI-217 and DNR-AI-217 are 16-channel simultaneously sampling A/D boards compatible with UEI’s popular Cube and RACKtangle® chassis respectively. The DNA/DNR versions are electronically identical and feature 24-bit resolution with 7 software selectable input ranges. The DNx-AI-217 is pin compatible with the popular DNx-AI-207 board and offers an easy upgrade path for those looking for more resolution, higher sample rates or simultaneously sampling inputs.

An A/D per channel configuration allows channels to be sampled simultaneously at rates up to 120 kS/s each (480 kS/s max aggregate entire board). The A/D per channel configuration virtually eliminates input cross talk and channel settling time issues even when connected to high impedance signal sources.
The DNx-AI-217 is fully isolated from the Cube/RACKtangle and is overvoltage protected up to ±40 V (power on or off). The inputs go into a high impedance mode when power is removed making the AI-217 ideal for use in redundant measurement/control applications. 

Additionally, the DNx-AI-217 provides a dedicated CJC channel that can be used for reading from the built-in CJC sensor on the DNA-STP-AI-U or AI-207TC terminal panels.

Software included with the DNx-AI-217 provides a comprehensive yet easy to use API that supports all popular operating systems including Windows, Linux, real-time operating systems such as QNX, RTX, VXworks and more. Finally, the UEIDAQ Framework supplies complete support for those creating applications in Windows based data acquisition software packages such as LabVIEW, MATLAB/Simulink, DASYLab or any application which supports ActiveX or OPC servers.
 
Characteristics:
  • For use in “CUBE” chassis
  • 16 differential analog input channels (+ one CJC channel)
  • Simultaneous sampling (one A/D converter per channel)
  • Direct Inputs for thermocouples (w/ DNA-STP-AI-U or DNA-STP-AI-207TC panel)
  • 120 kHz per channel sample rate (480 kHz board max)
  • 24-bit resolution
  • “Open” input wiring detection
  • Input over-range detection
  • Gains - 1, 2, 4, 8, 16, 32 and 64
  • Pin compatible with DNx-AI-207
 
Technical Specifications
Parameter
Number of channels: 16 fully differential plus
1 single-ended dedicated CJC channel
ADC resolution 24 bits / SAR. (AD7766)
Sampling rate 120 kS/s per channel (max);
480 kS/s max aggregate for entire board
Input bias current < 2 nA typical
Input offset <4 µV; G=1, <2µV; G=2, <1 µV; G>2 (@ 25°C) 
(-40°C to +85°C spec is 2.5 times 25°C offset)
Input INL error < 0.00004 % (40 ppm) max
Input impedance 100 MΩ (min)
Input range ±10 Volt (gain = 1)
Input resolution 1.19 µV (gain = 1), 18.6 nV (gain = 64)
Gains 1, 2, 4, 8, 16, 32, 64
Common mode rejection 110 dB typical
Chan to Chan crosstalk < 1 µVrms
Open input detection current 100 µA
Isolation 350 Vrms
Overvoltage protection -40V to +40V (power on or off)
Power off leakage current < 10 µA (-40V to + 40V)
Power consumption 2.2W max
Operating temp. (tested) -40°C to +85°C
Operating humidity 95%, non-condencing
Vibration IEC 60068-2-6 5 g, 10-500 Hz, sinusoidal
IEC 60068-2-64 5 g (rms), 10-500Hz, broadband random
Shock IEC 60068-2-27 50 g, 3 ms half sine, 18 shocks @ 6 orientations
30 g, 11 ms half sine, 18 shocks @ 6 orientations
MTBF 500,000 hours