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AD7699 Datasheet(PDF) 12 Page - Analog Devices

Part # AD7699
Description  14-Bit, 8-Channel, 250 kSPS PulSAR ADC
PDF  28 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7699 Datasheet(HTML) 12 Page - Analog Devices

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AD7949
Rev. A | Page 12 of 28
–60
–70
–80
–90
–100
–110
–120
0
50
100
150
200
FREQUENCY (kHz)
VDD = VREF = 5V, –0.5dB
VDD = VREF = 2.5V, –0.5dB
VDD = VREF = 2.5V, –10dB
VDD = VREF = 5V, –10dB
2750
2500
2250
2000
1750
1500
1250
1000
750
100
90
80
70
60
50
40
30
20
2.5
3.0
3.5
4.0
4.5
5.0
5.5
VDD SUPPLY (V)
2.5V INTERNAL REF
4.096V INTERNAL REF
INTERNAL BUFFER, TEMP ON
INTERNAL BUFFER, TEMP OFF
EXTERNAL REF, TEMP ON
EXTERNAL REF, TEMP OFF
VIO
fS = 200kSPS
Figure 17. THD vs. Frequency
Figure 20. Operating Currents vs. Supply
90
89
88
87
86
85
84
83
82
81
80
79
78
–10
INPUT LEVEL (dB)
–8
–6
–2
0
–4
fIN = 20kHz
VDD = VREF = 2.5V
VDD = VREF = 5V
3000
2750
2500
2250
2000
1750
1500
1250
1000
180
160
140
120
100
80
60
40
20
–55
TEMPERATURE (°C)
–35
–15
5
25
45
65
85
105
125
fS = 200kSPS
VDD = 5V, INTERNAL 4.096V REF
VDD = 5V, EXTERNAL REF
VDD = 2.5, EXTERNAL REF
VIO
Figure 18. SNR vs. Input Level
Figure 21. Operating Currents vs. Temperature
2
1
0
–1
–2
–55
TEMPERATURE (°C)
–35
–15
5
25
45
65
85
105
125
UNIPOLAR ZERO
UNIPOLAR GAIN
BIPOLAR ZERO
BIPOLAR GAIN
SDO CAPACITIVE LOAD (pF)
120
0
20
406080
100
25
20
15
10
5
0
VDD = 2.5V, 85°C
VDD = 3.3V, 25°C
VDD = 3.3V, 85°C
VDD = 5V, 85°C
VDD = 5V, 25°C
VDD = 2.5V, 25°C
Figure 19. Offset and Gain Errors vs. Temperature
Figure 22. tDSDO Delay vs. SDO Capacitance Load and Supply



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