ADT7460(2013) データシートの表示（PDF） - ON Semiconductor
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ADT7460 Datasheet PDF : 47 Pages
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ADT7460
Table 10. 10-BIT A/D OUTPUT CODE VS. VIN
Input Voltage
ADC Output
5 VIN
VCC (3.3 VIN) (Note 1)
<0.0042
2.5 VIN
<0.00293
Decimal
0
Binary (10 Bits)
00000000 00
<0.0065
<0.0042
<0.0032
0
00000000 00
0.0065–0.0130
0.0042–0.0085
0.0032–0.0065
1
00000000 01
0.0130–0.0195
0.0085–0.0128
0.0065–0.0097
2
00000000 10
0.0195–0.0260
0.0128–0.0171
0.0097–0.0130
3
00000000 11
0.0260–0.0325
0.0171–0.0214
0.0130–0.0162
4
00000001 00
0.0325–0.0390
0.0214–0.0257
0.0162–0.0195
5
00000001 01
0.0390–0.0455
0.0257–0.0300
0.0195–0.0227
6
00000001 10
0.0455–0.0521
0.0300–0.0343
0.0227–0.0260
7
00000001 11
0.0521–0.0586
0.0343–0.0386
0.0260–0.0292
8
00000010 00
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
1.6675–1.6740
1.1000–1.1042
0.8325–0.8357
256 (1/4 Scale)
01000000 00
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
3.3300–3.3415
2.2000–2.2042
1.6650–1.6682
512 (1/2 Scale)
10000000 00
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
5.0025–5.0090
3.3000–3.3042
2.4975–2.5007
768 (3/4 Scale)
11000000 00
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
6.5983–6.6048
4.3527–4.3570
3.2942–3.2974
1013
11111101 01
6.6048–6.6113
4.3570–4.3613
3.2974–3.3007
1014
11111101 10
6.6113–6.6178
4.3613–4.3656
3.3007–3.3039
1015
11111101 11
6.6178–6.6244
4.3656–4.3699
3.3039–3.3072
1016
11111110 00
6.6244–6.6309
4.3699–4.3742
3.3072–3.3104
1017
11111110 01
6.6309–6.6374
4.3742–4.3785
3.3104–3.3137
1018
11111110 10
6.6374–6.4390
4.3785–4.3828
3.3137–3.3169
1019
11111110 11
6.6439–6.6504
4.3828–4.3871
3.3169v3.3202
1020
11111111 00
6.6504–6.6569
4.3871–4.3914
3.3202–3.3234
1021
11111111 01
6.6569–6.6634
4.3914–4.3957
3.3234–3.3267
1022
11111111 10
>6.6634
>4.3957
>3.3267
1023
11111111 11
1. The VCC output codes listed assume that VCC is 3.3 V. If VCC input is reconfigured for 5.0 V operation (by setting Bit 7 of Configuration
Register 1), the VCC output codes are the same as for the 5.0 VIN column.
Additional ADC Functions for Voltage Measurements
A number of other functions are available on the
ADT7460 to offer the systems designer increased flexibility.
Turn-off Averaging
For each voltage measurement read from a value register,
16 readings have actually been made internally and the
results averaged before being placed into the value register.
If the user wants to speed up conversion, setting Bit 4 of
Configuration Register 2 (Reg. 0x73) turns averaging off.
This effectively gives a reading 16 times faster (711 ms), but
the reading may be noisier.
Bypass Voltage Input Attenuator
Setting Bit 5 of Configuration Register 2 (Reg. 0x73)
removes the attenuation circuitry from the 2.5 V input. This
allows the user to directly connect external sensors or to
rescale the analog voltage measurement inputs for other
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