AD7798BRU View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
AD7798BRU Datasheet PDF : 28 Pages
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AD7798/AD7799
TYPICAL PERFORMANCE CHARACTERISTICS
8388800
8388750
8388700
8388650
8388600
8388550
8388500
8388450
0
200
400
600
800
READING NUMBER
1000
Figure 6. Typical Noise Plot (Internal Reference, Gain = 64, Update Rate = 16.7
Hz) for AD7793
16
14
12
10
8
6
4
2
0
8388482
8388520
8388560
8388600
8388640
8388680
8388720 8388750
Figure 7. Noise Distribution Histogram for AD7793 (Internal Reference, Gain
= 64, Update Rate = 16.7 Hz)
Figure 8. Excitation Current Matching (210 µA) at Ambient Temperature
Preliminary Technical Information
20
10
0
–1.75 –1.05 –0.70 –0.35 0 0.35 0.70 1.05 1.40 1.75
MATCHING (%)
Figure 9. Excitation Current Matching (1 mA) at Ambient Temperature
90
80
70
60
50
40
30
20
10
0
0
200
400
600
800
1000
LOAD CAPACITANCE (nF)
Figure 10. Bias Voltage Generator Power Up Time vs. Load Capacitance
3.0
VDD = 5V
UPDATE RATE = 16.6Hz
2.5 TA = 25°C
2.0
1.5
1.0
0.5
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
LOAD CAPACITANCE (nF)
Figure 11. RMS Noise vs. Reference Voltage (Gain = 1)
Pr.E 10/04 | Page 12 of 28
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