AD7912 Analog Devices, AD7912 Datasheet - Page 14
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AD7912
Manufacturer Part Number
AD7912
Description
2-Channel, 2.35 V to 5.25 V, 1 MSPS, 10-Bit A/D Converter
Manufacturer
Analog Devices
Datasheet
1.AD7912.pdf
(32 pages)
Specifications of AD7912
Resolution (bits)
10bit
# Chan
2
Sample Rate
1MSPS
Interface
Ser,SPI
Analog Input Type
SE-Uni
Ain Range
Uni Vdd
Adc Architecture
SAR
Pkg Type
SOP,SOT
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Part Number
Manufacturer
Quantity
Price
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AD7912/AD7922
Figure 16. THD vs. Analog Input Frequency for Various Source Impedances
–0.2
–0.4
–0.6
–0.8
–1.0
–0.2
–0.4
–0.6
–0.8
–1.0
1.0
0.8
0.6
0.4
0.2
1.0
0.8
0.6
0.4
0.2
–20
–30
–40
–50
–60
–70
–80
–90
0
0
10
0
0
512
512
Figure 15. AD7922 DNL Performance
Figure 14. AD7922 INL Performance
R
IN
1024
1024
= 500Ω
1536
1536
FREQUENCY (kHz)
CODE
CODE
2048
2048
R
100
IN
= 50Ω
R
IN
R
2560
2560
= 1kΩ
V
F
TEMPERATURE = 25 ° C
IN
V
F
TEMPERATURE = 25 ° C
V
SAMP
DD
DD
SAMP
DD
= 100Ω
= 2.7V
= 2.7V
= 3.6V
= 1MSPS
3072
3072
= 1MSPS
R
R
IN
IN
= 0Ω
= 10Ω
3584
3584
4096
4096
1000
Rev. 0 | Page 14 of 32
Figure 17. THD vs. Analog Input Frequency for Various Supply Voltages
–68
–70
–72
–74
–76
–78
–80
–82
–84
–86
–88
180
160
140
120
100
80
60
40
20
0
2.0
10
Figure 18. Shutdown Current vs. Supply Voltage
2.5
3.0
SUPPLY VOLTAGE (V)
FREQUENCY (kHz)
3.5
V
V
100
DD
DD
V
= 5.25V
= 2.7V
DD
4.0
TEMP = +85°C
TEMP = +25°C
TEMP = –40°C
V
= 2.35V
DD
= 4.75V
4.5
V
DD
5.0
= 3.6V
1000
5.5