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DNA-AI-225
DNA-AI-225
25-channel, 24-bit, 1 kS/s per channel, simultaneous sampling analog input, data acquisition board
 
25-channel, 24-bit analog input data acquisition board (layer) for high-precision measurement.
 
Characteristics:
  • 25 channels
  • 24-bit resolution
  • One channel can be used for CJC
  • 5 S/s to 1000 S/s sampling rates
  • Differential inputs of ±1.25V
  • Direct connection to thermocouples (using DNA-STP-AI-U terminal panel)
  • Ideal for seismic testing, high-precision weight and temperature measurement
 
Technical Specifications
Parameter
Resolution 24 bits
Number of A/Ds 25
Sampling rate 5 Hz to 1000 Hz
Onboard FIFO size 1024 samples
Input ranges Bipolar ±1.25V (AIn+ & AIn- within -0.25 ..+5V)
Unipolar -0.25 .. 1.25V (AIn- connected to AGND directly or via up to 10 kOhm resistor)
Input over-/underrange software detection
50/60Hz rejection > 120dB of AC component for rates < 10Hz
Power supply rejection > 120dB
Common mode rejection 120dB typical
Frontend bandwidth 1250Hz @ -3dB
Input impedance 100 MΩ
Input bias current ±15 nA
A/D conversion time 145 msec @ 5-Hz sampling,
1.1 msec @ 500-Hz sampling,
0.57 msec @ 1000-Hz sampling
System noise 0.5 µV @ 5Hz, 5.0 µV @ 500 Hz,
7.0 µV @ 1000 Hz
Effective number of bits 23.5 bits @ 5 Hz, 20.0 bits @ 500 Hz,
19.0 bits @ 1000 Hz
Nonlinearity 3 ppm
Total Harmonic Distortion+N
onlinearity+Noise		 -110 dB
Input Protection 2kV ESD, ±15V over/under voltage
Isolation 350Vrms
Power consumption 3W - 3.9W
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 520,000 hours