AD7322 Analog Devices, AD7322 Datasheet - Page 10

• Manufacturer Part Number: AD7322
• Description: Software Selectable True Bipolar Input, 2-Channel, 12-Bit Plus Sign ADC
• Manufacturer: Analog Devices

Specifications of AD7322

• Resolution (bits): 13bit
• # Chan: 2
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni,SE-Uni
• Ain Range: Bip (Vref),Bip (Vref) x 2,Bip (Vref) x 4,Bip 10V,Bip 2.5V,Bip 5.0V,Uni (Vref) x 4,Uni 10V
• Adc Architecture: SAR
• Pkg Type: SOP

AD7322
Figure 10. THD vs. Analog Input Frequency for Single-Ended (SE) and True
Figure 11. THD vs. Analog Input Frequency for Single-Ended (SE) and True
Figure 12. SINAD vs. Analog Input Frequency for Single-Ended (SE) and
–100
–100
–50
–55
–60
–65
–70
–75
–80
–85
–90
–95
–50
–55
–60
–65
–70
–75
–80
–85
–90
–95
80
75
70
65
60
55
50
10
10
10
V
V
T
f
V
V
T
f
S
S
A
A
CC
DD
CC
DD
= 1MSPS
= 1MSPS
= 25°C
= 25°C
/V
/V
= 5V
= 3V
±10V DIFF
SS
SS
= ±12V
= ±12V
Differential Mode (Diff) at 5 V V
Differential Mode (Diff) at 3 V V
Differential Mode (Diff) at 5 V V
ANALOG INPUT FREQUENCY (kHz)
ANALOG INPUT FREQUENCY (kHz)
ANALOG INPUT FREQUENCY (kHz)
±10V DIFF
0V TO +10V SE
0V TO +10V SE
0V TO +10V SE
100
100
100
±10V DIFF
±10V SE
±10V SE
±10V SE
±2.5V DIFF
0V TO +10V DIFF
0V TO +10V DIFF
0V TO +10V DIFF
V
V
T
f
±5V DIFF
CC
CC
CC
S
CC
DD
A
= 1MSPS
±5V DIFF
= 25°C
±5V SE
/V
= 5V
±2.5V SE
±2.5V DIFF
±2.5V DIFF
SS
±5V SE
±5V DIFF
±2.5V SE
±5V SE
±2.5V SE
= ±12V
1000
1000
1000
Rev. A | Page 10 of 36
Figure 13. SINAD vs. Analog Input Frequency for Single-Ended (SE) and
–50
–55
–60
–65
–70
–75
–80
–85
–90
–95
80
75
70
65
60
55
50
10k
9k
8k
7k
6k
5k
4k
3k
2k
1k
10
0
0
Figure 15. Histogram of Codes True Differential Mode
–2
0
Figure 14. Channel-to-Channel Isolation
100
0V TO +10V SE
Differential Mode (Diff) at 3 V V
ANALOG INPUT FREQUENCY (kHz)
FREQUENCY OF INPUT NOISE (kHz)
228
–1
200
V
CC
V
SINGLE-ENDED MODE
f
T
50kHz ON SELECTED CHANNEL
S
A
DD
= 3V
CODE
100
= 1MSPS
±10V SE
300
= 25°C
9469
/V
±10V DIFF
0
0V TO +10V DIFF
SS
= ±12V
V
400
CC
±5V DIFF
303
V
V
RANGE = ±10V
10k SAMPLES
T
1
= 5V
CC
DD
A
V
V
T
f
CC
S
= 25°C
CC
DD
A
/V
±5V SE
= 1MSPS
= 5V
= 25°C
SS
/V
= 3V
500
±2.5V DIFF
SS
= ±12V
±2.5V SE
= ±12V
0
2
1000
600