ADM1026JST-REEL7 View Datasheet(PDF) - ON Semiconductor
Part Name
Description
Manufacturer
ADM1026JST-REEL7 Datasheet PDF : 55 Pages
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ADM1026
output of 3/4 full scale (decimal 192) for the nominal input
voltage, and so has adequate headroom to cope with over
voltages. Table 3 shows the input ranges of the analog inputs
and output codes of the ADC.
When the ADC is running, it samples and converts an
analog or local temperature input every 711 ms (typical value).
Each input is measured 16 times and the measurements are
averaged to reduce noise, so the total conversion time for each
input is 11.38 ms.
Measurements on the remote temperature (D1 and D2)
inputs take 2.13 ms. These are also measured 16 times and
are averaged, so the total conversion time for a remote
temperature input is 34.13 ms.
Table 3. A−toD Output Codes vs. VIN
+12 VIN
< 0.0625
0.062−0.125
0.125−0.187
0.188−0.250
0.250−0.313
0.313−0.375
0.375−0.438
0.438−0.500
0.500−0.563
4.000−4.063
–12 VIN
< −15.928
−15.928−15.855
−15.855−15.783
−15.783−15.711
−15.711−15.639
−15.639−15.566
−15.566−15.494
−15.494−15.422
−15.422−15.349
−
−
−
−11.375−11.303
+5.0 VIN
< 0.026
0.026−0.052
0.052−0.078
0.078−0.104
0.104−0.130
0.130−0.156
0.156−0.182
0.182−0.208
0.208−0.234
1.667−1.693
Input Voltage
3.3 V MAIN
< 0.0172
VBAT
NA
0.017−0.034
NA
0.034−0.052
NA
0.052−0.069
NA
0.069−0.086
NA
0.086−0.103
NA
0.103−0.120
NA
0.120−0.138
NA
0.138−0.155
NA
1.110−1.127
NA
VCCP
< 0.012
0.012−0.023
0.023−0.035
0.035−0.047
0.047−0.058
0.058−0.070
0.070−0.082
0.082−0.094
0.094−0.105
0.750−0.780
8.000−8.063
−
−
−
−6.750−6.678
3.333−3.359
2.000−2.016 2.000−2.016 1.500−1.512
12.000−12.063
−
−
−
−2.125−2.053
5−5.026
3.330−3.347 3.000−3.016 2.250−2.262
−
−
−
15.313−15.375
1.705−1.777
6.38−6.406
4.249−4.267 3.828−3.844
15.375−15.437
1.777−1.850
6.406−6.432
4.267−4.284 3.844−3.860
15.437−15.500
1.850−1.922
6.432−6.458
4.284−4.301 3.860−3.875
15.500−15.563
1.922−1.994
6.458−6.484
4.301−4.319 3.875−3.890
15.562−15.625
1.994−2.066
6.484−6.51
4.319−4.336 3.890−3.906
15.625−15.688
2.066−2.139
6.51−6.536
4.336−4.353 3.906−3.921
15.688−15.750
2.139−2.211
6.536−6.563
4.353−4.371 3.921−3.937
15.750−15.812
2.211−2.283
6.563−6.589
4.371−4.388 3.937−3.953
15.812−15.875
2.283−2.355
6.589−6.615
4.388−4.405 3.953−3.969
15.875−15.938
2.355−2.428
6.615−6.641
4.405−4.423 3.969−3.984
>15.938
>2.428
>6.634
>4.423
>3.984
1. * VBAT is not accurate for voltages under 1.5 V (see Figure 14).
2.871−2.883
2.883−2.895
2.895−2.906
2.906−2.918
2.918−2.930
2.930−2.941
2.941−2.953
2.953−2.965
2.965−2.977
2.977−2.988
>2.988
AIN (0–5)
< 0.012
0.012−0.023
0.023−0.035
0.035−0.047
0.047−0.058
0.058−0.070
0.070−0.082
0.082−0.094
0.094−0.105
0.750−0.780
1.500−1.512
2.250−2.262
2.871−2.883
2.883−2.895
2.895−2.906
2.906−2.918
2.918−2.930
2.930−2.941
2.941−2.953
2.953−2.965
2.965−2.977
2.977−2.988
>2.988
AIN (6–9)
< 0.010
0.010−0.019
0.019−0.029
0.029−0.039
0.039−0.049
0.049−0.058
0.058−0.068
0.068−0.078
0.078−0.087
0.625−0.635
1.250−1.260
1.875−1.885
2.392−2.402
2.402−2.412
2.412−2.422
2.422−2.431
2.431−2.441
2.441−2.451
2.451−2.460
2.460−2.470
2.470−2.480
2.480−2.490
>2.490
A−to−D Output
Decimal Binary
0
00000000
1
00000001
2
00000010
3
00000011
4
00000100
5
00000101
6
00000110
7
00000111
8
00001000
64
(1⁄4 scale)
01000000
128
(1⁄2 scale)
10000000
192
(3⁄4 scale)
11000000
245
11110101
246
11110110
247
11110111
248
11111000
249
11111001
250
11111010
251
11111011
252
11111100
253
11111101
254
11111110
255
11111111
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