AD7298 datasheet(12/25 Pages) AD

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AD7298

Rev. B | Page 11 of 24

–1.5

–1.0

–0.5

0.5

1.0

1.5

2.0

TEMPERATURE (°C)

–40 –25 –10 0

10 20 25 30 35 45 60 85 105 125

100

200

300

400

500

600

700

800

900 1000

THROUGHPUT (kSPS)

VDD = VDRIVE = 3V

Figure 15. Temperature Accuracy at 3 V

Figure 18. Power vs. Throughput in Normal Mode with VDD = 3 V

SIGNAL FREQUENCY (kHz)

–60

–65

–70

–75

–80

–85

–90

RSOURCE = 0Ω

RSOURCE = 33Ω

RSOURCE = 100Ω

100

500

RSOURCE = 43Ω

RSOURCE = 200Ω

RSOURCE = 47Ω

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

2.8

2.9

3.0

3.1

3.2

3.3

3.4

3.5

3.6

VDD (V)

–40°C

0°C

+25°C

VDRIVE = 3V

+85°C

+105°C

+125°C

Figure 16. THD vs. Analog Input Frequency for Various Source Impedances

Figure 19. Full Shutdown Current vs. Supply Voltage for Various

Temperatures

200

400

600

800

1000

1200

THROUGHPUT (kSPS)

VDD CURRENT

VDRIVE CURRENT

VDD = VDRIVE = 3V

Figure 17. Average Supply Current vs. Throughput Rate

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