ADUCM360 AD [Analog Devices], ADUCM360 Datasheet - Page 11

• Manufacturer Part Number: ADUCM360
• Description: Low Power Precision Analog Microcontroller
• Manufacturer: AD [Analog Devices]

Preliminary Technical Data
Table 4: RMS Noise (µV) vs. Gain and Output Update Rate
(Using an External Reference (2.5V) Both ADCs)
Update Rate (Hz)
4.55 (Chop On)
ADCxFLT = 0x88FD
30 (Chop Off)
ADCxFLT = 0x007E
50 (Chop Off)
ADCxFLT = 0x007D
100 (Chop Off)
ADCxFLT = 0x004F
488 (Chop Off Sinc4)
ADCxFLT = 0x100F
976 (Chop Off Sinc4)
ADCxFLT = 0x1007
1953 (Chop Off Sinc4)
ADCxFLT = 0x1003
3906 (Chop Off Sinc4)
ADCxFLT = 0x1001
Table 5: Typical Output RMS Effective Number of Bits in Normal Mode
(Using an External Reference (2.5V), Both ADCs, Peak-to-Peak Bits in Parentheses)
ADC
Register
Status
Chop On
Sinc3
Chop Off
Sinc3
Chop Off
Sinc3
Chop Off
Sinc3
Chop Off
Sinc4
Chop Off
Sinc4
Chop Off
Sinc4
Chop Off
Sinc4
Data
Update
Rate
3.75 Hz
30 Hz
50 Hz
100 Hz
488 Hz
976 Hz
1953
Hz
3906
Hz
±1.0 V
(PGA = 1)
22.1
(19.4p-p)
20.7
(18p-p)
20.3
(17.6p-p)
19.9
(17.2p-p)
19
(16.3p-p)
18.6
(15.9p-p)
17.9
(15.2p-p)
15.1
(12.4p-p)
Gain of 1
1.1
3
3.9
5.2
9.3
12.5
20.0
140.0
Input Voltage Noise (mV)
±500 mV
(PGA = 2)
22.3
(19.5p-p)
20.7
(18p-p)
20.1
(17.4p-p)
19.8
(17p-p)
18.9
(16.2p-p)
18.4
(15.7p-p)
17.9
(15.2p-p)
15.1
(12.4p-p)
Gain of 2
0.5
1.4
2.2
2.8
5.0
7
10
70.0
±250 mV
(PGA = 4)
22.1
(19.4p-p)
20.5
(17.7p-p)
20.4
(17.7p-p)
19.9
(17.2p-p)
18.9
(16.2p-p)
18.4
(15.7p-p)
17.7
(15p-p)
15.1
(12.4p-p)
Gain of 4
0.27
0.85
0.92
1.25
2.5
3.5
5.7
35.0
Rev. Pr R| Page 11 of 21
±125 mV
(PGA = 8)
21.8
(19.1p-p)
20.5
(17.7p-p)
20.4
(17.7p-p)
19.9
(17.2p-p)
19
(16.3p-p)
18.4
(15.7p-p)
17.9
(15.2p-p)
15.1
(12.4p-p)
Gain of 8
0.17
0.44
0.46
0.63
1.2
1.75
2.6
17.2
Gain of 16
0.088
0.27
0.3
0.38
0.75
1.2
1.71
8.9
±62.5 mV
(PGA = 16)
21.8
(19.1p-p)
20.1
(17.4p-p)
20
(17.3p-p)
19.6
(16.9p-p)
18.7
(15.9p-p)
18
(15.3p-p)
17.5
(14.8p-p)
15.1
(12.4p-p)
Gain of 32
0.07
0.22
0.21
0.32
0.7
0.83
1.3
4.8
±31.25 mV
(PGA = 32)
21.1
(18.4p-p)
19.4
(16.7p-p)
19.5
(16.8p-p)
18.9
(16.2p-p)
17.8
(15p-p)
17.5
(14.8p-p)
16.9
(14.2p-p)
15
(12.3p-p)
ADuCM360/ADuCM361
Gain of 64
0.06
0.19
0.2
0.28
0.57
0.77
1.24
2.65
±15.625 mV
(PGA = 64)
20.3
(17.6p-p)
18.6
(15.9p-p)
18.6
(15.9p-p)
18.1
(15.4p-p)
17.1
(14.3p-p)
16.6
(13.9p-p)
15.9
(13.2p-p)
14.8
(12.1p-p)
Gain of 128
0.58
0.17
0.19
0.26
0.5
0.75
1.1
1.88
±7.8125 mV
(PGA = 128)
19.4
(16.6p-p)
17.8
(15.1p-p)
17.6
(14.9p-p)
17.2
(14.5p-p)
16.3
(13.5p-p)
15.7
(12.9p-p)
15.1
(12.4p-p)
14.3
(11.6p-p)