ADM8690_15 datasheet(5/20 Pages) AD

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ADM8690/ADM8691/ADM8692/ADM8693/ADM8695

Rev. B | Page 5 of 20

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

POWER-FAIL DETECTOR

PFI Input Threshold

1.25

1.3

1.35

VCC = 5 V

PFI Input Current

−25

±0.01

+25

PFO Output Voltage

0.4

ISINK = 3.2 mA

3.5

ISOURCE = 1 μA

PFO Short-Circuit Source Current

μA

PFI = low, PFO = 0 V

PFO Short-Circuit Sink Current

PFI = high, PFO = VOUT

CHIP ENABLE GATING

CEIN Threshold

0.8

VIL

3.0

VIH

CEIN Pull-Up Current

μA

CEOUT Output Voltage

0.4

ISINK = 3.2 mA

VOUT − 1.5

ISOURCE = 3.0 mA

VOUT − 0.05

ISOURCE = 1 μA, VCC = 0 V

CE Propagation Delay

OSCILLATOR

OSC IN Input Current

±2

μA

OSC SEL Input Pull-Up Current

μA

OSC IN Frequency Range

500

kHz

OSC SEL = 0 V

OSC IN Frequency with External Capacitor

kHz

OSC SEL = 0 V, COSC = 47 pF

1 WDI is a three-level input that is internally biased to 38% of VCC and has an input impedance of approximately 5 MΩ.

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