AD7391AR 查看數據表（PDF） - Analog Devices

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AD7391AR

3 V Serial-Input Micropower 10-Bit and 12-Bit DACs

Analog Devices 

40

VDD = 5V

VREF = 3V

CODE = ØØØH

30

20

10

0

0

1

2

3

4

5

VOUT – V

TPC 10. IOUT at Zero Scale vs. VOUT

2␮s

VOUT

(5mV/DIV)

LD

(5V/DIV)

20mV

VDD = 5V

VREF = 2.5V

fCLK = 50kHz

CODE: 7FH to 80H

TIME – 2␮s/DIV

TPC 11. AD7390 Midscale Transi-

tion Performance

AD7390/AD7391

5␮s

VOUT

(5mV/DIV)

VDD = 5V

VREF = 2.5V

fCLK = 50kHz

LD = HIGH

5mV

CLK

(5V/DIV)

TIME – 5␮s/DIV

TPC 12. Digital Feedthrough

100␮s

VOUT

(1V/DIV)

LD

(5V/DIV)

VDD = 5V

VREF = 2.5V

fCLK = 50kHz

1V

TIME – 100␮s/DIV

TPC 13. AD7390 Large Signal

Settling Time

10

5

0

–5

–10

–15

–20

–25

–30 VDD = 5V

–35

VREF = 50mV ؎ 2V dc

DATA = FFFH

–40

100

1k

10k

FREQUENCY – Hz

100k

TPC 14. AD7390 Gain vs.

Frequency

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4 VDD = 5V

0.2

CODE = 768H

TA = 25؇C

0.0

0

1

2

3

4

5

REFERENCE VOLTAGE – V

TPC 15. AD7390 INL Error vs.

Reference Voltage

1.2

SAMPLE SIZE = 50

1.0

0.8

CODE = FFFH

0.6

0.4

CODE = 000H

0.2

0.0

0

100 200 300 400 500 600

HOURS OF OPERATION AT 150؇C

TPC 16. AD7390 Long-Term Drift

Accelerated by Burn-In

REV. A

–7–

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