AD7294 Analog Devices, AD7294 Datasheet - Page 18

• 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
Figure 31. Temperature Error vs. Series Resistance for 15 Typical Parts
Figure 30. Temperature Error vs. Capacitor Between D+ and D−
Figure 32. Frequency Response of the High-Side Current Sensor
–10
–15
–20
–0.2
–0.4
–0.6
–0.8
–1.0
–1.2
–1.4
–1.6
–1.8
–2.0
–10
–15
–20
–25
–30
–35
–40
–45
–50
15
10
–5
–5
5
0
5
0
0
1k
0
0
2000
10k
0.5
CAPACITANCE FROM D+ TO D– (nF)
SERIES RESISTANCE (Ω)
4000
on the
FREQUENCY (Hz)
100k
1.0
AD7294
6000
1M
1.5
8000
10M
2.0
10000
12000
100M
2.5
Rev. H | Page 18 of 48
Figure 33. I
Figure 34. I
Without V
–100
–110
–50
–55
–60
–65
–70
–75
–80
–85
–90
–95
–50
–60
–70
–80
–90
1k
1
SENSE
SENSE
Power Supply Rejection Ratio vs. Supply Ripple Frequency
PP
Common-Mode Rejection Ratio vs. Ripple Frequency for a
10
Supply Decoupling Capacitors for a 500 mV Ripple
400 mV Peak-To-Peak Ripple
10k
100
RIPPLE FREQUENCY (Hz)
1k
FREQUENCY (Hz)
100k
10k
100k
1M
1M
Data Sheet
10M
100M
10M