AD7294 datasheet(19/48 Pages) AD

19 / 48 page

AD7294

Data Sheet

Rev. I | Page 18 of 47

–0.2

–0.4

–0.6

–0.8

–1.0

–1.2

–1.4

–1.6

–1.8

–2.0

0.5

1.0

1.5

2.0

2.5

CAPACITANCE FROM D+ TO D– (nF)

Figure 30. Temperature Error vs. Capacitor Between D+ and D−

–5

–10

–15

–20

2000

4000

6000

8000

10000

12000

SERIES RESISTANCE (Ω)

Figure 31. Temperature Error vs. Series Resistance for 15 Typical Devices

–50

–45

–40

–35

–30

–25

–20

–15

–10

–5

FREQUENCY (Hz)

10k

100k

10M

100M

Figure 32. Frequency Response of the High-Side Current Sensor

on the AD7294

–50

–95

–90

–85

–80

–75

–70

–65

–60

–55

10k

100k

10M

FREQUENCY (Hz)

Figure 33. ISENSE Power Supply Rejection Ratio vs. Supply Ripple Frequency

Without VPP Supply Decoupling Capacitors for a 500 mV Ripple

–50

–110

–100

–90

–80

–70

–60

100M

10M

100k

10k

100

RIPPLE FREQUENCY (Hz)

Figure 34. ISENSE Common-Mode Rejection Ratio vs. Ripple Frequency for a

400 mV Peak-To-Peak Ripple

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