51
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
Averaging
factor
ADC subrange, V
±10
±5
±2
±1
±0.5 ±0.2
Typical value of the noise level, applied to the
ADC input, μV
2000
1
309
157
50
37
22
18
400
5
127
56
28
16
12
8
50
20
62
27
13
8
6
4
10
128
40
25
12
7
5
4
5.1.3. ADC inter-channel passing.
Signal source resistance
(in the channel where the interchannel
passage is measured)
Channel polling time,
μs (with averaging factor equal to 1
) or
channel setup time,
μs
0.5
1.0
2.0
4.0
8.0
16.0
Interchannel traversal, dB
(the signal from the previous channel in the order of
interrogation)
0-50 Ohm
-65
-78
-82
-82
-82
-82
1 kOhm
-35
-63
-73
-82
-82
-82
10 kOhm
-5
-11
-22
-43
-74
-82
