AD7391 datasheet(7/12 Pages) AD

7 / 12 page

AD7390/AD7391

REV. 0

–7–

VOUT – V

VDD = +5V

VREF = +3V

CODE = ØØØH

Figure 14. IOUT at Zero Scale vs. VOUT

100µs

TIME – 100µs/div

VOUT

(1V/DIV)

(5V/DIV)

VDD = 5V

VREF = 2.5V

fCLK = 50KHz

AD7390

Figure 17. Large Signal Settling Time

HOURS OF OPERATION AT 150

°C

1.2

0.0

100

600

200

300

400

500

1.0

0.8

0.6

0.4

0.2

AD7390

SAMPLE SIZE = 50

CODE = FFFH

CODE = 000H

Figure 20. Long-Term Drift

Accelerated by Burn-In

2µs

20mV

VDD = 5V

VREF = 2.5V

fCLK = 50KHz

CODE: 7FH to 80H

TIME – 2µs/DIV

AD7390

VOUT

(5mV/DIV)

(5V/DIV)

Figure 15. Midscale Transition

Performance

FREQUENCY – Hz

100

100K

10K

VDD = +5V

VREF = +100mV + 2VDC

DATA = FFFH

Figure 18. Reference Multiplying

Bandwidth

5µs

5mV

VDD = 5V

VREF = 2.5V

fCLK = 50KHz

= HIGH

TIME – 5µs/DIV

VOUT

(5mV/DIV)

CLK

(5V/DIV)

Figure 16. Digital Feedthrough

REFERENCE VOLTAGE – V

2.0

1.8

0.0

0.8

0.6

0.4

0.2

1.6

1.0

1.2

1.4

AD7390

VDD = +5V

CODE = 768H

TA = 25 C

Figure 19. INL Error vs. Reference

Voltage

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