Specifications
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DE-M070701E • DEWE-50-USB2-16 • Technical Reference Manual • Printing version 1.0.4 • April 16, 2008
DEWE-50-USB2-16
DT 9834 AD-board
Analog input specications
Analog input
Number of inputs up to 32 SE
Resolution 16-bit
Programmable gain 1,2,4,8
Range16-bit
Effectiv number of bits ±10 V, 5 V, 2.5 V, 1.25 V
A/D throughput Successive approximation (SAR)
Single channel500 kS/s
Multiple channel500 kS/s (aggragate) ±0.05 %
A/D conversion time
2 μs
Channel acquisition time
±1/2 LBS, 1 μs typ.
Sample and hold aperture uncertainty2 ns typ.
Sample and hold aperture delay50 ns typ.
System accuracy (% of FSR) 500 kHz 400 kHz 250 kHz
Gain = 1±0.05 %±0.03 %±0.01 %
Gain = 2 (5 V Range, default range) ±0.06 %±0.04 %±0.02 %
Gain = 4±0.07 %±0.05 %±0.02 %
Gain = 8±0.09 %±0.07 %±0.03 %
Bipolar input range±10 V
Common Mode Input Voltage±11 V
Common Mode rejection ratio
Gain = 1 @ 1 kΩ 74 dB 80 dB
Maximum input voltage without damage
Power on ±35 V
Power off± -20 V
Input impedance< -93 dB
Off channel
100 MΩ, 10 pf
On channel100 MΩ, 10 pf
Bias current ±20 nA
Nonlinearity <1/2 LSB
Differential Nonlinearity 1/2 LSB
Inherent quantizing error1/2 LSB
A/D zero drift
±10 μV / °C
Gain drift (of FSR / °C)
±30 ppm / °C
Differential Linearity drift (of FSR / °C
±3 ppm ±2 ppm