ADT7460ARQZ-RL7 ONSEMI [ON Semiconductor], ADT7460ARQZ-RL7 Datasheet - Page 14

• Manufacturer Part Number: ADT7460ARQZ-RL7
• Description: dBCOOL Remote Thermal Monitor and Fan Controller
• Manufacturer: ONSEMI [ON Semiconductor]

1. The V
Additional ADC Functions for Voltage Measurements
ADT7460 to offer the systems designer increased flexibility.
Turn−Off Averaging
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
Table 6. 10−Bit A/D Output Code vs. V
A number of other functions are available on the
For each voltage measurement read from a value register,
Register 1), the V
0.0065–0.0130
0.0130–0.0195
0.0195–0.0260
0.0260–0.0325
0.0325–0.0390
0.0390–0.0455
0.0455–0.0521
0.0521–0.0586
1.6675–1.6740
3.3300–3.3415
5.0025–5.0090
6.5983–6.6048
6.6178–6.6244
6.6244–6.6309
6.6309–6.6374
6.6374–6.4390
6.6439–6.6504
6.6504–6.6569
6.6569–6.6634
6.6048–6.6113
6.6113–6.6178
CC
<0.0065
>6.6634
5 V
output codes listed assume that V
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IN
CC
output codes are the same as for the 5.0 V
V
CC
0.0042–0.0085
0.0085–0.0128
0.0128–0.0171
0.0171–0.0214
0.0214–0.0257
0.0257–0.0300
0.0300–0.0343
0.0343–0.0386
1.1000–1.1042
2.2000–2.2042
3.3000–3.3042
4.3527–4.3570
4.3570–4.3613
4.3613–4.3656
4.3656–4.3699
4.3699–4.3742
4.3742–4.3785
4.3785–4.3828
4.3828–4.3871
4.3871–4.3914
4.3914–4.3957
Input Voltage
(3.3 V
<0.0042
<0.0042
>4.3957
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IN
) (Note 1)
IN
CC
is 3.3 V. If V
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CC
ADT7460
0.0032–0.0065
0.0065–0.0097
0.0097–0.0130
0.0130–0.0162
0.0162–0.0195
0.0195–0.0227
0.0227–0.0260
0.0260–0.0292
0.8325–0.8357
1.6650–1.6682
2.4975–2.5007
3.2942–3.2974
3.2974–3.3007
3.3007–3.3039
3.3039–3.3072
3.3072–3.3104
3.3104–3.3137
3.3137–3.3169
3.3169v3.3202
3.3202–3.3234
3.3234–3.3267
input is reconfigured for 5.0 V operation (by setting Bit 7 of Configuration
IN
<0.00293
<0.0032
>3.3267
14
2.5 V
column.
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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
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
IN
Setting Bit 5 of Configuration Register 2 (Reg. 0x73)
256 (1/4 scale)
512 (1/2 scale)
768 (3/4 scale)
Decimal
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
0
0
1
2
3
4
5
6
7
8
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ADC Output
Binary (10 Bits)
00000000 00
00000000 00
00000000 01
00000000 10
00000000 11
00000001 00
00000001 01
00000001 10
00000001 11
00000010 00
01000000 00
10000000 00
11000000 00
11111101 01
11111101 10
11111101 11
11111110 00
11111110 01
11111110 10
11111110 11
11111111 00
11111111 01
11111111 10
11111111 11
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