AD4696 datasheet(19/96 Pages) AD

19 / 96 page

Data Sheet

AD4695/AD4696

Rev. 0 | Page 19 of 96

0.35

1000

SAMPLE RATE (kSPS)

0.05

0.10

0.15

0.20

0.25

0.30

100

200

300

400

500

600

700

800

900

REFERENCE INPUT HIGH-Z MODE DISABLED

REFERENCE INPUT HIGH-Z MODE ENABLED

Figure 39. Reference Input Current vs. Sample Rate, VREF = 5 V

–40

120

TEMPERATURE (°C)

–20

100

0.35

0.05

0.10

0.15

0.20

0.25

0.30

REFERENCE INPUT HIGH-Z MODE DISABLED, 1MSPS

REFERENCE INPUT HIGH-Z MODE DISABLED, 500kSPS

REFERENCE INPUT HIGH-Z MODE ENABLED, 1MSPS

REFERENCE INPUT HIGH-Z MODE ENABLED, 500kSPS

Figure 40. Reference Input Current vs. Temperature, VREF = 5 V,

Frequency of CNV Signal (fCNV) = 1 MSPS

2.4

5.1

REFERENCE VOLTAGE (V)

0.35

0.05

0.10

0.15

0.20

0.25

0.30

REFERENCE INPUT HIGH-Z MODE DISABLED, 1MSPS

REFERENCE INPUT HIGH-Z MODE DISABLED, 500kSPS

REFERENCE INPUT HIGH-Z MODE ENABLED, 1MSPS

REFERENCE INPUT HIGH-Z MODE ENABLED, 500kSPS

2.7

3.3

3.6

3.9

4.2

4.5

4.8

Figure 41. Reference Input Current vs. Reference Voltage,

fS = 1 MSPS and 500 kSPS

400

NUMBER OF ACTIVE CLAMPS

100

150

200

250

300

350

OVERVOLTAGE REDUCED CURRENT MODE DISABLED

OVERVOLTAGE REDUCED CURRENT MODE ENABLED

Figure 42. Additional Reference Input Current vs. Number of Active

Clamps, Clamp Current = 5 mA, VREF = 5 V

–1

–0.5

2.0

TIME (ms)

0.5

1.0

1.5

LDO_IN

VDD (CVDD = 1µF)

VDD (CVDD = 10µF)

Figure 43. LDO_IN, VDD Voltage vs. Time,

CVDD is the VDD Decoupling Capacitance

250

DIGITAL OUTPUT LOAD CAPACITANCE (pF)

100

150

200

VIO = 1.2V

VIO = 1.8V

Figure 44. tDSDO vs. Digital Output Load Capacitance

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