AD7322 Analog Devices, AD7322 Datasheet - Page 9

• 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

TYPICAL PERFORMANCE CHARACTERISTICS
–100
–120
–140
–100
–120
–140
–0.2
–0.4
–0.6
–0.8
–1.0
–20
–40
–60
–80
–20
–40
–60
–80
1.0
0.8
0.6
0.4
0.2
0
0
0
0
0
0
512
1024
50
50
Figure 6. Typical DNL True Differential Mode
1536
Figure 4. FFT True Differential Mode
100
100
Figure 5. FFT Single-Ended Mode
2048
2560
150
150
3072
FREQUENCY (kHz)
FREQUENCY (kHz)
200
200
3584
CODE
4096
250
250
4608
4096 POINT FFT
V
V
T
INT/EXT 2.5V REFERENCE
±10V RANGE
f
SNR = 77.30dB
SINAD = 76.85dB
THD = –86.96dB
SFDR = –88.22dB
V
T
V
INT/EXT 2.5V REFERENCE
±10V RANGE
+DNL = +0.72LSB
–DNL = –0.22LSB
4096 POINT FFT
V
V
T
INT/EXT 2.5V REFERENCE
±10V RANGE
f
SNR = 74.67dB
SINAD = 74.03dB
THD = –82.68dB
SFDR = –85.40dB
IN
A
IN
CC
A
DD
CC
DD
CC
DD
A
300
300
5120
= 25°C
= 25°C
= 50kHz
= 25°C
= 50kHz
, V
, V
, V
= V
= V
= V
SS
SS
5632
SS
DRIVE
DRIVE
DRIVE
350
350
= ±15V
= ±15V
= ±15V
6144
= 5V
= 5V
= 5V
6656
400
400
7168
450
450
7680
8192
500
500
Rev. A | Page 9 of 36
–0.2
–0.4
–0.6
–0.8
–1.0
–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
1.0
0.8
0.6
0.4
0.2
0
0
0
0
0
0
V
T
V
INT/EXT 2.5V REFERENCE
V
T
V
512
512
512
CC
A
DD
CC
A
DD
= 25°C
= 25°C
1024
1024
1024
, V
, V
= V
= V
Figure 7. Typical INL True Differential Mode
Figure 8. Typical DNL Single-Ended Mode
Figure 9. Typical INL Single-Ended Mode
SS
SS
1536
1536
1536
DRIVE
DRIVE
= ±15V
= ±15V
2048
2048
2048
= 5V
= 5V
2560
2560
2560
3072
3072
3072
INT/EXT 2.5V REFERENCE
±10V RANGE
+INL = +0.55LSB
–INL = –0.68LSB
3584
3584
3584
CODE
CODE
CODE
4096
4096
4096
±10V RANGE
+DNL = +0.79LSB
–DNL = –0.38LSB
4608
4608
4608
V
T
V
INT/EXT 2.5V REFERENCE
±10V RANGE
+INL = +0.87LSB
–INL = –0.49LSB
A
CC
DD
5120
5120
5120
= 25°C
, V
= V
SS
5632
5632
5632
DRIVE
= ±15V
6144
6144
6144
= 5V
6656
6656
6656
7168
7168
7168
AD7322
7680
7680
7680
8192
8192
8192