AD4697 datasheet(6/107 Pages) AD

6 / 107 page

Data Sheet

AD4697/AD4698

SPECIFICATIONS

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Rev. 0 | 6 of 107

Table 1.

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

REF Average Input Current

VREF = AVDD = 5 V, internal reference buffer disabled

Reference High-Z Mode Disabled

fS = 10 kSPS, unipolar mode

3.3

μA

fS = 500 kSPS, unipolar mode

160

μA

fS = 1 MSPS, unipolar mode

320

µA

fS = 10 kSPS, pseudobipolar mode

4.0

μA

fS = 500 kSPS, pseudobipolar mode

195

μA

fS = 1 MSPS, pseudobipolar mode

390

µA

Reference High-Z Mode Enabled

fS = 10 kSPS, unipolar mode

0.3

μA

fS = 500 kSPS, unipolar mode

μA

fS = 1 MSPS, unipolar mode

μA

fS = 10 kSPS, pseudobipolar mode

0.4

μA

fS = 500 kSPS, pseudobipolar mode

μA

fS = 1 MSPS, pseudobipolar mode

µA

REFIN Current

VREF = 5 V

Internal Reference Buffer Enabled

No active overvoltage protection clamps

All clamps active, overvoltage reduced, current mode

disabled

200

µA

All clamps active, overvoltage reduced, current mode

enabled

4.5

µA

REFIN Input Capacitance

WLCSP, internal reference buffer enabled

Internal Reference Buffer Output Current Limit

Reference buffer boost mode disabled

3.5

Reference buffer boost mode enabled

Internal Reference Buffer Turn-On Time7 (tREFBUF)

VREF = 5 V

Reference Buffer Boost Mode Disabled

REF decoupling capacitor (CREF = 1 µF)

CREF = 10 µF

Reference Buffer Boost Mode Enabled

CREF = 1 µF

1.2

CREF = 10 µF

TEMPERATURE SENSOR

Temperature Sensor Voltage

TA = 25°C

680

TA = 0°C

725

Temperature Sensitivity

TA = −40°C to +125°C

−1.8

mV/°C

OVERVOLTAGE CLAMP

External Series Resistance (REXT)8

For stable clamp operation

Overvoltage reduced current mode disabled

2000

Overvoltage reduced current mode enabled

1000

External Series Capacitance (CEXT)8

For stable clamp operation

500

Clamp Input Current

For each active clamp

Clamp Activation Voltage

VREF + 0.55

Clamp Deactivation Voltage

VREF + 0.1

Input Clamping Voltage

Clamp current (ICLAMP) = 5 mA

VREF + 0.2

Activation Time

Deactivation Time

100

DIGITAL INPUTS

Logic Levels

Input Low Voltage (VIL)

−0.3

+0.3 × VIO

Input High Voltage (VIH)

0.7 × VIO

3.6

Input Current (IL)

−1

µA

Input Pin Capacitance

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