AD5426 查看數據表（PDF） - Analog Devices

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AD5426

8-/10-/12-Bit High Bandwidth Multiplying DACs with Serial Interface

Analog Devices 

3.5

TA = 25؇C

3.0 AD5443

LOADING 010101010101

2.5

2.0

1.5

VCC = 5V

1.0

0.5

VCC = 3V

0

1 10 100 1k 10k 100k 1M 10M 100M

FREQUENCY (Hz)

TPC 19. Supply Current vs.

Update Rate

AD5426/AD5432/AD5443

6

0

–6

–12

TA = 25؇C

LOADING

ZS TO FS

–18

–24

–30

–36

–42

–48

–54

–60

–66

–72

ALL ON

DB11

DB10

DB9

DB8

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0

–78

–84

–90

–96

ALL OFF

–102

1 10 100 1k

TA = 25؇C

VDD = 5V

VREF = ؎3.5V

INPUT

CCOMP = 1.8pF

AD8038 AMPLIFIER

10k 100k 1M 10M 100M

FREQUENCY (Hz)

TPC 20. Reference Multiplying

Bandwidth vs. Frequency and Code

0.2

0

–0.2

–0.4

TA = 25؇C

–0.6 VDD = 5V

VREF = ؎3.5V

CCOMP = 1.8pF

AD8038 AMPLIFIER

–0.8

1 10 100 1k 10k 100k 1M

FREQUENCY (Hz)

10M 100M

TPC 21. Reference Multiplying

Bandwidth—All Ones Loaded

3.00

TA = 25؇C

VDD = 5V

AD8038 AMPLIFIER

0.00

–3.00

–6.00

–9.00

10k

VREF = ؎2V, AD8038 CC 1.47pF

VREF = ؎2V, AD8038 CC 1pF

VREF = ؎0.15V, AD8038 CC 1pF

VREF = ؎0.15V, AD8038 CC 1.47pF

VREF = ؎3.51V, AD8038 CC 1.8pF

100k

1M

10M

FREQUENCY (Hz)

100M

TPC 22. Reference Multiplying

Bandwidth vs. Frequency and

Compensation Capacitor

0.060

0.050

VDD 5V, 0V REF

NRG = 2.049nVs

7FFH TO 800H

0.040

TA = 25؇C

VREF = 0V

AD8038 AMP

CCOMP = 1.8pF

AD5443

0.030

0.020

0.010

0.000

–0.010

–0.020

0

VDD 3V, 0V REF

NRG = 0.088nVs

800H TO 7FFH

VDD 3V, 0V REF

NRG = 1.877nVs

7FFH TO 800H

VDD 5V, 0V REF

NRG = 0.119nVs,

800H TO 7FFH

50 100 150 200 250 300

TIME (ns)

TPC 23. Midscale Transition

VREF = 0 V

–1.700

–1.710

VDD 5V, 3.5V REF

NRG = 1.184nVs

7FFH TO 800H

TA = 25؇C

VREF = 3.5V

AD8038 AMP

CCOMP = 1.8pF

AD5443

–1.720

–1.730

VDD 3V, 3.5V REF

NRG = 1.433nVs

7FFH TO 800H

–1.740

VDD 3V, 3.5V REF

NRG = 0.647nVs

800H TO 7FFH

–1.750

–1.760

0

VDD 5V, 3.5V REF, NRG = 0.364nVs,

800H TO 7FFH

50 100 150 200 250 300

TIME (ns)

TPC 24. Midscale Transition

VREF = 3.5 V

20

TA = 25؇C

VDD = 3V

0 AMP = AD8038

–20

–40

–60

–80

–100

FULL SCALE

ZERO SCALE

–120

1

10 100 1k 10k 100k 1M 10M

FREQUENCY (Hz)

TPC 25. Power Supply Rejection vs.

Frequency

–60

TA = 25؇C

VDD = 3V

–65 VREF = 3.5V p-p

–70

–75

–80

–85

–90

1

10 100 1k 10k 100k 1M

FREQUENCY (Hz)

TPC 26. THD and Noise vs.

Frequency

0.7

0.6

ALL 1s

ALL 0s

0.5

0.4

VDD = 5V

0.3

0.2

0.1

VDD = 3V

0

–40 –20 0 20 40 60 80 100 120

TEMPERATURE (؇C)

TPC 27. Supply Current

vs. Temperature

REV. 0

–9–

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