EVAL-AD7291SDZ(Rev0) 查看數據表（PDF） - Analog Devices
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EVAL-AD7291SDZ Datasheet PDF : 28 Pages
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3.0
VDD = VDRIVE = 3V
2.5
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
CURRENT LOAD (mA)
Figure 10. VREF vs. Reference Output Drive
55
50
45
40
35
30
25
20
0
20
40
60
80
100
TIME (Seconds)
Figure 11. Response to Thermal Shock from Room Temperature into 50°C
Stirred Oil
–90
VDD = 3V
–92 VDRIVE = 3V
–94
–96
–98
–100
–102
–104
–106
–108
–110
1k
10k
100k
1M
10M
RIPPLE FREQUENCY (Hz)
100M
Figure 12. PSRR vs. Supply Ripple Frequency Without Supply Decoupling
AD7291
125
VDD = VDRIVE = 3V
120
fSCL = 400kHz
115
110
105
100
95
90
85
80
75
1
10
100
1k
fNOISE (kHz)
Figure 13. Channel-to-Channel Isolation, fIN = 10 kHz
72
VDRIVE = 3V
VDD = 3V
71
70
69
0
0.5
1.0
1.5
2.0
2.5
EXTERNAL REFERENCE (V)
Figure 14. SINAD vs. Reference Voltage, fSCL = 400 kHz, fs = 22.22 kSPS
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–40 –25 –10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
Figure 15. Temperature Accuracy at 3 V
Rev. 0 | Page 9 of 28
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