AD7400 Analog Devices, AD7400 Datasheet - Page 10

• Manufacturer Part Number: AD7400
• Description: Isolated Sigma-Delta Modulator
• Manufacturer: Analog Devices

Specifications of AD7400

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 10MSPS
• Interface: Ser
• Analog Input Type: Diff-Uni
• Ain Range: ± 0.2 V Diff,0.4 V p-p
• Adc Architecture: Sigma-Delta Modulator
• Pkg Type: SOIC

AD7400
Figure 13. Gain Error Drift vs. Temperature for Various Supply Voltages
Figure 12. Offset Drift vs. Temperature for Various Supply Voltages
0.0099
0.0098
0.0097
0.0096
0.0095
0.0094
0.0093
0.0092
0.0091
0.0090
0.0089
–100
–150
–200
–0.05
–0.10
–0.15
–0.20
0.20
0.15
0.10
0.05
100
–50
50
–45 –35 –25 –15 –5
0
0
–45 –35 –25 –15 –5
V
Figure 14. I
DD1
V
T
DD1
= V
A
= +85°C
DD2
= V
DD2
= 4.5V
DD1
= 5.25V
vs. V
5 15 25 35 45 55 65 75 85 95 105
5
V
IN
TEMPERATURE (°C)
TEMPERATURE (°C)
V
15 25 35 45 55 65 75 85 95 105
DC INPUT VOLTAGE (V)
IN
DD1
V
at Various Temperatures
DD1
T
= V
V
A
DD1
= V
= +25°C
DD2
V
T
DD1
DD2
= V
A
= 5V
= –40°C
DD2
= V
= 5.25V
DD2
= 5V
V
DD1
= 4.5V
= V
DD2
= 5V
Rev. E | Page 10 of 20
0.0036
0.0035
0.0034
0.0033
0.0032
0.0031
0.0030
–100
–10
–20
–30
–40
–50
–60
–70
–80
–90
–3
–6
–9
9
6
3
0
0
Figure 17. CMRR vs. Common-Mode Ripple Frequency
0.1
Figure 15. I
Figure 16. I
1
DD2
vs. V
RIPPLE FREQUENCY (kHz)
V
IN
V
IN
DC INPUT VOLTAGE (V)
IN
IN
10
+ DC INPUT (V)
at Various Temperatures
vs. V
IN
+ DC Input
V
DD1 =
100
V
DD2 =
V
DD1
4.5V TO 5.25V
1000
= V
DD2
= 5V
10000