Adc Own Input Noise; Adc Inter-Channel Passing - L-Card L-502-P-G-D-I User Manual

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5.1.2. ADC own input noise.

Below are the typical noise levels without taking into account the factors of temperature and
long-term zero drift for 1-channel mode with a shorted ADC input.
Data entry rate,
Kword/s
from one ADC
channel
2000
400
50
10

5.1.3. ADC inter-channel passing.

Signal source resistance
(in the channel where the interchannel
passage is measured)
0-50 Ohm
1 kOhm
10 kOhm
Averaging
factor
±10
Typical value of the noise level, applied to the
1 309
5 127
20 62
128 40
Channel polling time, μs (with averaging factor equal to 1) or
0.5
-65
-35
-5
ADC subrange, V
±5 ±2
ADC input, μV
157 50
56 28
27 13
25 12
channel setup time, μs
1.0 2.0
Interchannel traversal, dB
(the signal from the previous channel in the order of
interrogation)
-78 -82
-63 -73
-11 -22
±1 ±0.5 ±0.2
37 22 18
16 12 8
8 6 4
7 5 4
4.0 8.0
-82 -82
-82 -82
-43 -74
16.0
-82
-82
-82