AD5293 datasheet(15/24 Pages) AD

15 / 24 page

Data Sheet

AD5293

Rev. E | Page 15 of 24

–120

–105

–90

–75

–60

–45

–30

–15

FREQUENCY (Hz)

100

10k

100k

VDD/VSS = ±15V

CODE = HALF SCALE

VIN = 1V rms

Noise BW = 22kHz

50kΩ

20kΩ

100kΩ

Figure 30. Total Harmonic Distortion + Noise (THD + N) vs. Frequency

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

Figure 31. Maximum Bandwidth vs. Code vs. Net Capacitance

–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 32. Large Signal Settling Time, Code from Zero Scale to Full Scale

–140

–120

–100

–80

–60

–40

–20

0.001

0.01

0.1

AMPLITUDE (V rms)

VDD/VSS = ±15V,

CODE = HALF SCALE

fIN = 1kHz

NOISE BW = 22kHz

50kΩ

20kΩ

100kΩ

Figure 33. Total Harmonic Distortion + Noise (THD + N) vs. Amplitude

256

512

768

1023

CODE (Decimal)

VDD/VSS = 30V/0V

VA = VDD

VB = VSS

50kΩ

20kΩ

100kΩ

Figure 34. Theoretical Maximum Current vs. Code

–40

–32

–24

–16

–8

–0.5

TIME (µs)

VDD/VSS = ±15V

VA = VDD

VB = VSS

CODE = HALF CODE

Figure 35. Digital Feedthrough

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