AD7294 Analog Devices, AD7294 Datasheet - Page 16

• Manufacturer Part Number: AD7294
• Description: 12-Bit Monitor and Control System with Multichannel ADC, DACs, Temperature Sensor, and Current Sense
• Manufacturer: Analog Devices

Specifications of AD7294

• Resolution (bits): 12bit
• # Chan: 9
• Sample Rate: 200kSPS
• Interface: I²C/Ser 2-Wire,Ser
• Analog Input Type: Diff-Uni,SE-Uni
• Ain Range: (Vref) p-p,2 V p-p,Uni (Vref),Uni (Vref) x 2
• Adc Architecture: SAR
• Pkg Type: CSP

AD7294
–0.5
–1.0
–1.5
–2.0
–0.5
–1.0
–1.5
–2.0
–2.5
–0.2
–0.4
–0.6
2.0
1.5
1.0
0.5
1.5
1.0
0.5
0.8
0.6
0.4
0.2
0
0
0
0
0
0
256
512
Figure 19. ADC DNL vs. Reference Voltage
Figure 18. ADC INL vs. Reference Voltage
768
1
1
1024
1280
REFERENCE VOLTAGE (V)
REFERENCE VOLTAGE (V)
Figure 20. DAC INL
2
2
1536
1792
MAX DNL
MAX INL
MIN DNL
MIN INL
CODE
2048
AV
V
OFFSET IN A/B/C/D = FLOATING
DRIVE
3
3
DD
2304
= DV
T
V
V
SINGLE-ENDED
I
T
V
V
SINGLE-ENDED
I
= 5V, INTERNAL REF,
2560
2
2
A
DRIVE
DD
A
DRIVE
DD
C MODE 400kHz
C MODE 400kHz
= 25°C
= 25°C
DD
2816
= 5V
= 5V
4
4
= 5V
= 5V, V
= 5V, V
3072
3328
REF
REF
5
5
3584
RANGE
RANGE
3840
4096
6
6
Rev. H | Page 16 of 48
–0.2
–0.4
–0.6
–10
–15
–20
0.6
0.4
0.2
20
15
10
–5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
5
0
Figure 23. Settling Time for a ¼ to ¾ Output Voltage Step
0
Figure 22. 0.1 Hz to 10 Hz DAC Output Noise (Code 800)
0
0
–5 –4 –3 –2 –1
256
1
512
768
2
1024
1280
3
Figure 21. DAC DNL
0
1536
4
1792
1
TIME (s)
TIME (µs)
CODE
2048
2
AV
V
OFFSET IN A/B/C/D = FLOATING
DRIVE
5
DD
2304
3
= DV
= 5V, INTERNAL REF,
2560
6
4
DD
2816
5
= 5V
7
3072
6
Data Sheet
3328
8
7
3584
8
9
3840
64pF
1nF
10nF
9
4096
10
10