AD5291 datasheet(19/30 Pages) AD

19 / 30 page

Data Sheet

AD5291/AD5292

Rev. E | Page 19 of 30

100,000

200,000

300,000

400,000

500,000

600,000

700,000

800,000

900,000

1,000,000

CODE (Decimal)

512

128

256

20k – 0pF

20k – 75pF

20k – 150pF

20k – 250pF

50k – 0pF

50k – 75pF

50k – 150pF

50k – 250pF

100k – 0pF

100k – 75pF

100k – 150pF

100k – 250pF

AD5292

AD5291

Figure 48. Bandwidth vs Code vs Net Capacitance

–5

–0.4

1.2

1.0

0.8

0.6

0.4

0.2

–0.2

TIME (ms)

Figure 49. IDD Waveform While Blowing/Reading Fuse

–5

TIME (µs)

VWB, CODE: FULL SCALE,

NORMAL MODE

SYNC

VDD/VSS = 30V/0V

VLOGIC = 5V

VA = VDD

VB = VSS

VWB, CODE: HALF-SCALE,

NORMAL MODE

VWB, CODE: HALF-SCALE,

R-PERF MODE

20kΩ

50kΩ

100kΩ

20kΩ

50kΩ

100kΩ

VWB, CODE: FULL SCALE,

R-PERF MODE

Figure 50. 20kΩ Large-Signal Settling Time from Code Zero Scale

256

512

768

1023

128

192

255

AD5292

AD5291

CODE (Decimal)

VDD/VSS = 30V/0V

VA = VDD

VB = VSS

50kΩ

20kΩ

100kΩ

Figure 51. Theoretical Maximum Current vs. Code

1.2

–0.8

–0.6

–0.4

–0.2

0.2

0.4

0.6

0.8

1.0

TIME (µs)

–2

VDD/VSS = ±15V

VLOGIC = +5V

VA = VDD

VB = VSS

50kΩ

20kΩ

100kΩ

Figure 52. Maximum Transition Glitch

–40

–32

–24

–16

–8

–0.5

TIME (µs)

VDD/VSS = ±15V

VA = VDD

VB = VSS

CODE = HALF CODE

Figure 53. Digital Feedthrough

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