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AD7291 Datasheet(PDF) 9 Page - Analog Devices

Part # AD7291
Description  8-Channel, I2C, 12-Bit SAR ADC with Temperature Sensor
PDF  28 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7291 Datasheet(HTML) 9 Page - Analog Devices

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AD7291
Rev. 0 | Page 9 of 28
0
0.5
1.0
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2.0
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3.0
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1.5
2.0
2.5
3.0
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4.0
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CURRENT LOAD (mA)
VDD = VDRIVE = 3V
Figure 10. VREF vs. Reference Output Drive
20
25
30
35
40
45
50
55
0
20406080
100
TIME (Seconds)
Figure 11. Response to Thermal Shock from Room Temperature into 50°C
Stirred Oil
–110
–108
–106
–104
–102
–100
–98
–96
–94
–92
–90
1k
10k
100k
1M
10M
100M
RIPPLE FREQUENCY (Hz)
VDD = 3V
VDRIVE = 3V
Figure 12. PSRR vs. Supply Ripple Frequency Without Supply Decoupling
125
120
115
110
105
100
95
90
85
80
75
1
10
100
1k
fNOISE (kHz)
VDD = VDRIVE = 3V
fSCL = 400kHz
Figure 13. Channel-to-Channel Isolation, fIN = 10 kHz
72
71
70
69
02
2.0
1.5
1.0
0.5
EXTERNAL REFERENCE (V)
.5
VDRIVE = 3V
VDD = 3V
Figure 14. SINAD vs. Reference Voltage, fSCL = 400 kHz, fs = 22.22 kSPS
–2.0
–1.0
–1.5
–0.5
0
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1.0
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–40
–25
–10
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125
TEMPERATURE (°C)
Figure 15. Temperature Accuracy at 3 V



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