AD7708 Analog Devices, AD7708 Datasheet - Page 21

• Manufacturer Part Number: AD7708
• Description: 16-Bit 8/10-Channel, Low Voltage, Low Power, Sigma Delta ADC
• Manufacturer: Analog Devices

Specifications of AD7708

• Resolution (bits): 16bit
• # Chan: 10
• Sample Rate: n/a
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni,SE-Uni
• Ain Range: (2Vref/PGA Gain) p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: SOIC,SOP

SF
Word
03
13
66
69
81
255
SF
Word
03
13
66
69
81
255
SF
Word
03
13
66
69
81
255
SF
Word
03
13
66
69
81
255
Table VII. Typical Output RMS Noise vs. Input Range and Update Rate for AD7718 with Chop Disabled (CHOP = 1);
Output RMS Noise in V
Table VIII. Peak-to-Peak Resolution vs. Input Range and Update Rate for AD7718 with Chop Disabled (CHOP = 1);
Peak-to-Peak Resolution in Bits
Table IX. Typical Output RMS Noise vs. Input Range and Update Rate for AD7708 with Chop Disabled (CHOP = 1);
Output RMS Noise in V
Table X. Peak-to-Peak Resolution vs. Input Range and Update Rate for AD7708 with Chop Disabled (CHOP = 1);
Peak-to-Peak Resolution in Bits
Data Update
Rate (Hz)
1365.33
315.08
62.06
59.38
50.57
16.06
Data Update
Rate (Hz)
1365.33
315.08
62.06
59.36
50.57
16.06
Data Update
Rate (Hz)
1365.33
315.08
62.06
59.38
50.57
16.06
Data Update
Rate (Hz)
1365.33
315.08
62.06
59.36
50.57
16.06
30.31
2.47
0.743
0.961
0.894
0.475
8
11
13
13
13
14
30.31
2.47
0.743
0.961
0.894
0.475
8
11
13
13
13
14
20 mV
20 mV
20 mV
20 mV
29.02
2.49
0.852
0.971
0.872
0.468
9
12
14
14
14
15
29.02
2.49
0.852
0.971
0.872
0.468
9
12
14
14
14
15
40 mV
40 mV
40 mV
40 mV
58.33
2.37
0.9183
0.949
0.872
0.434
9
14
15
15
15
16
58.33
2.37
0.9183
0.949
0.872
0.434
9
14
15
15
15
16
80 mV
80 mV
80 mV
80 mV
112.7
3.87
0.8788
0.922
0.806
0.485
9
14
16
16
16
17
112.7
3.87
0.8788
0.922
0.806
0.485
9
14
16
16
16
16
Input Range
160 mV
Input Range
160 mV
Input Range
160 mV
Input Range
160 mV
282.44
7.18
0.8795
0.923
0.793
0.458
9
14
17
17
17
18
282.44
7.18
0.8795
0.923
0.793
0.458
9
14
16
16
16
16
320 mV
320 mV
320 mV
320 mV
361.72
12.61
1.29
1.32
1.34
0.688
9
14
17
17
17
18
361.72
12.61
1.29
1.32
1.34
0.688
9
14
16
16
16
16
640 mV
640 mV
640 mV
640 mV
AD7708/AD7718
616.89
16.65
1.99
2.03
2.18
1.18
9
15
18
18
18
19
616.89
16.65
1.99
2.03
2.18
1.18
9
15
16
16
16
16
1.28 V
1.28 V
1.28 V
1.28 V
1660
32.45
3.59
3.73
2.96
1.78
9
15
18
18
18
19
1660
32.45
3.59
3.73
2.96
1.78
9
15
16
16
16
16
2.56 V
2.56 V
2.56 V
2.56 V