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AD7329 Datasheet(PDF) 12 Page - Analog Devices

Part No. AD7329
Description  1 MSPS, 8-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
Download  40 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD7329 Datasheet(HTML) 12 Page - Analog Devices

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AD7329
Rev. 0 | Page 12 of 40
–50
–95
10
1000
ANALOG INPUT FREQUENCY (kHz)
±2.5V RANGE
0V TO +10V RANGE
±10V RANGE
±5V RANGE
VCC = VDRIVE = 5V
VDD = 12V, VSS = –12V
TA = 25°C
fS = 1MSPS
INTERNAL REFERENCE
AD8021 BETWEEN MUXOUT+
AND ADCIN+ PINS
100
–55
–60
–65
–70
–75
–80
–85
–90
Figure 10. THD vs. Analog Input Frequency for Single-Ended Mode (SE) at 5 V VCC
–50
–95
10
1000
ANALOG INPUT FREQUENCY (kHz)
±2.5V RANGE
0V TO +10V RANGE
±10V RANGE
±5V RANGE
VCC = VDRIVE = 5V
VDD = 12V, VSS = –12V
TA = 25°C
fS = 1MSPS
INTERNAL REFERENCE
AD8021 BETWEEN MUXOUT
AND ADCIN PINS
100
–55
–60
–65
–70
–75
–80
–85
–90
Figure 11. THD vs. Analog Input Frequency for True Differential Mode (Diff) at
5 V VCC
74
66
10
1000
ANALOG INPUT FREQUENCY (kHz)
±2.5V RANGE
0V TO +10V RANGE
±10V RANGE
±5V RANGE
VCC = VDRIVE = 5V
VDD = 12V, VSS = –12V
TA = 25°C
fS = 1MSPS
INTERNAL REFERENCE
AD8021 BETWEEN MUXOUT+
AND ADCIN+ PINS
73
72
71
70
69
68
67
100
Figure 12. SINAD vs. Analog Input Frequency for Single-Ended Mode (SE) at 5 V VCC
75
80
50
10
1000
ANALOG INPUT FREQUENCY (kHz)
±2.5V RANGE
0V TO +10V RANGE
±10V RANGE
±5V RANGE
VCC = VDRIVE = 5V
VDD = 12V, VSS = –12V
TA = 25°C
fS = 1MSPS
INTERNAL REFERENCE
AD8021 BETWEEN MUXOUT
AND ADCIN PINS
100
70
65
60
55
Figure 13. SINAD vs. Analog Input Frequency for True Differential Mode (Diff)
at 5 V VCC
–50
–100
0
600
FREQUENCY OF INPUT NOISE (kHz)
100
200
300
400
500
VDD = 12V, VSS = –12V
VCC = VDRIVE = 5V
SINGLE-ENDED MODE
50kHz ON SELECTED CHANNEL
fS = 1MSPS
TA = 25°C
WIRE LINK
WITH AD8021
–55
–60
–65
–70
–75
–80
–85
–90
–95
Figure 14. Channel-to-Channel Isolation with and Without AD8021 Between
the MUXOUT+ and ADCIN + Pins
10k
0
–2
CODE
9k
8k
7k
6k
5k
4k
3k
2k
1k
–1
012
0
228
9469
303
0
VCC = 5V
VDD = 12V, VSS = –12V
RANGE = ±10V
10k SAMPLES
TA = 25°C
Figure 15. Histogram of Codes, True Differential Mode


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