AD7394 Просмотр технического описания (PDF) - Analog Devices

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Компоненты Описание

производитель

AD7394

+3 V, Dual, Serial Input 12-/10-Bit DACs

Analog Devices 

AD7394/AD7395

1800

1600

1400

1200

1000

AD7394

A: IDD = 2.7V, CODE = 555H

B: IDD = 2.7V, CODE = 3FFH

C: VDD = 5.5V, CODE = 155H

D: VDD = 5.5V, CODE = 3FFH D

800

C

600

B

400

A

200

0

1k

10k

100k

1M

10M

CLOCK FREQUENCY – Hz

Figure 13. Supply Current vs. Clock

Frequency

80

TA = +25؇C

70

60

VDD = 5.0V, ؎5%

50

40

30 VDD = 3.0V, ؎5%

20

10

0

1

10

100

1k

10k

FREQUENCY – Hz

Figure 14. AD7394 Power Supply

Rejection vs. Frequency

20

18

16 VDD = 5V

14

VREF = 2.5V

CODE = 800H

12

10

8

VDD = 3V

6

4

2

0

0 1 23 4 56 7

⌬ VOUT – LSB

8 9 10

Figure 15. AD7394 IOUT Sink Current

vs. ∆VOUT

10

VREF = 2.5V

9 CODE = 800H

8

VDD = 5V

7

6

VDD = 3V

5

4

3

2

1

0

؊10 ؊9 ؊8 ؊7 ؊6 ؊5 ؊4 ؊3 ؊2 ؊1 0

⌬ VOUT – LSB

Figure 16. AD7394 IOUT Source Cur-

rent vs. ∆VOUT

1.262

1.257

1.252

VDD = +5V

VREF = 2.5V

TA = +25؇C

CODE = 800H TO 7FFH

5mV/DIV

1.247

1.242

1.237

TIME – 2␮s/DIV

Figure 17. Midscale Transition

Performance

0

؊5

؊10

؊15

VDD = 5V

CODE = FFFH

؊20

؊25

؊30

؊35

؊40

؊45

؊50

100

1k

10k

FREQUENCY – Hz

100k

Figure 18. AD7395 Reference Multi-

plying Bandwidth

1.4

AD7394

1.2

1

CODE = FFFH

0.8

0.6

CODE = 000H

0.4

0.2

0

0 100 200 300 400 500 600

HOURS OF OPERATION – 150؇C

Figure 19. Long-Term Drift Acceler-

ated by Burn-In

–8–

REV. 0

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