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AD7794BRU Fiches technique(PDF) 16 Page - Analog Devices

No de pièce AD7794BRU
Description  6-Channel, Low Noise, Low Power, 24-/16-Bit 誇-? ADC with On-Chip In-Amp and Reference
Download  36 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD7794BRU Fiches technique(HTML) 16 Page - Analog Devices

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AD7794/AD7795
Rev. D | Page 16 of 36
TYPICAL PERFORMANCE CHARACTERISTICS
8388800
8388450
8388500
8388550
8388600
8388650
8388700
8388750
0
1000
800
600
400
200
READING NUMBER
Figure 6. Typical Noise Plot for the AD7794 (Internal Reference,
Gain = 64, Update Rate = 16.7 Hz, Chop Enabled)
16
0
2
4
6
8
10
12
14
8388482
8388750
8388720
8388680
8388640
8388600
8388560
8388520
CODE
Figure 7. Noise Distribution Histogram for the AD7794 (Internal Reference,
Gain = 64, Update Rate = 16.7 Hz, Chop Enabled)
8388450
8388050
8388100
8388150
8388200
8388250
8388300
8388350
8388400
0
1000
800
600
400
200
READING NUMBER
Figure 8. Typical Noise Plot for the AD7794 (Internal Reference,
Gain = 64, Update Rate = 16.7 Hz, AMP-CM = 1, Chop Disabled)
14
0
2
4
6
8
10
12
8388068
8388396
8388350
8388300
8388250
8388200
8388150
8388100
CODE
Figure 9. Noise Distribution Histogram for the AD7794 (Internal Reference,
Gain = 64, Update Rate = 16.7 Hz, Chop Disabled, AMP-CM = 1)
20
10
0
–2.0 –1.2 –0.8 –0.4
0
0.4
0.8
1.2
1.6
2.0
MATCHING (%)
Figure 10. Excitation Current Matching (210 μA) at Ambient Temperature
90
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LOAD CAPACITANCE (nF)
BOOST = 0
BOOST = 1
Figure 11. Bias Voltage Generator Power-Up Time vs. Load Capacitance


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