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AD7291 Datasheet(PDF) 9 Page - Analog Devices

Part # AD7291
Description  Temperature Sensor
PDF  29 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
Data Sheet
Rev. C | Page 8 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
0
–20
–40
–60
–80
–100
–120
0
2k
VDD = VDRIVE = 3V
fS = 22.22ksps
fSCL = 400kHz
fIN = 10kHz
SNR = 71.209
THD = –81.66
4k
6k
8k
10k
FREQUENCY (Hz)
Figure 4. Typical FFT
1.0
0.8
0.6
0.4
0.2
0
–1.0
–0.8
–0.6
–0.4
–0.2
0
500
1000
1500
2000
2500
3000
3500
4096
ADC CODE
TA = 25°C
VDRIVE = 3V
VREF = 2.5V
VDD = 3V
fS = 22.22ksps
fSCL = 400kHz
Figure 5. Typical ADC INL
1.0
0.8
0.6
0.4
0.2
0
–1.0
–0.8
–0.6
–0.4
–0.2
0
500
1000
1500
2000
2500
3000
3500
4096
ADC CODE
TA = 25°C
VDRIVE = 3V
VREF = 2.5V
VDD = 3V
fS = 22.22ksps
fSCL = 400kHz
Figure 6. Typical ADC DNL
1.0
–1.0
–0.8
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
0.8
0
0.5
1.0
1.5
2.0
2.5
3.0
VREF (V)
INL (POSITIVE)
INL (NEGATIVE)
TA = 25°C
VDRIVE = 3V
VDD = 3V
fS = 22.22ksps
fSCL = 400kHz
Figure 7. INL vs. External VREF
1.0
–1.0
–0.8
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
0.8
0
0.5
1.0
1.5
2.0
2.5
3.0
VREF (V)
DNL (POSITIVE)
DNL (NEGATIVE)
TA = 25°C
VDRIVE = 3V
VDD = 3V
fS = 22.22ksps
fSCL = 400kHz
Figure 8. DNL vs. External VREF
11.7
11.6
11.5
11.4
11.3
11.2
0
0.5
1.0
1.5
2.0
2.5
EXTERNAL REFERENCE (V)
Figure 9. Effective Number of Bits vs. VREF, fSCL = 400 kHz



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