Rainbow-electronics MAX6871 Instrukcja Użytkownika Pobierz pdf (Strona 4)

MAX6870/MAX6871

EEPROM-Programmable Hex/Quad

Power-Supply Sequencers/Supervisors with ADC

4 _______________________________________________________________________________________

PARAMETER

SYM B O L

CONDITIONS MIN

TYP

MAX

UNITS

0.8

MR, MARGIN, GPI_ Input Voltage

1.4

MR Input Pulse Width t

1µs

MR Glitch Rejection 100 ns

MR to PO_ Delay t

DMR

2µs

MR to V

DBP

Pullup Current I

= +1.4V 5 10 15 µA

MARGIN to V

DBP

Pullup Current

MARGIN

= +1.4V 5 10 15 µA

GPI_ to PO_ Delay

DGPI_

200 ns

GPI_ Pulldown Current I

GPI_

= +0.8V 5 10 15 µA

Watchdog Input Pulse Width t

WDI

GPI_ configured as a watchdog input 50 ns

000

5.625 6.25 6.875

001

22.5

27.5

010 90 100 110

011 360 400 440

100

1.44 1.60 1.76

101

5.76 6.40 7.04

110

23.04 25.60 28.16

Watchdog Timeout Period t

(Table 28)

111

92.16 102.40 112.64

Reference Input Voltage Range

REFIN

1.225 1.25 1.275

Reference Input Resistance

REFIN

= +1.25V 500

kΩ

IN1, LSB = 18.3mV 0

13.2

IN1, LSB = 9.16mV 0

9.366

IN2, LSB = 18.3mV 0

±15.25

IN2, LSB = 9.16mV 0

±9.366

IN3 to IN6, LSB = 7.32mV 0

5.50

IN3 to IN6, LSB = 3.66mV 0

3.746

ADC Range

AUXIN_, LSB = 1.2mV 0

1.249

IN1 to IN6 positive

±1.0

Internal Reference

IN2 negative

±1.0

ADC Total Unadjusted Error

(Note 5)

TUE

E xter nal Refer ence, IN 1 to IN 6 p osi ti ve ( N ote 6)

±1.0

%FSR

ADC Differential Nonlinearity DNL (Note 7) ±1

LSB

ADC Total Monitoring Cycle Time

Monitors all 8 inputs 200 266

AUXIN_ Input Leakage Current

LAUXIN_

AUXIN_

= 1.25V -1 +1 µA

SERIAL INTERFACE LOGIC (SDA, SCL, A0, A1)

Logic Input Low Voltage V

0.8 V

Logic Input High Voltage V

2.0 V

Input Leakage Current I

LKG

-1 +1 µA

Output Voltage Low V

SINK

= 3mA 0.4 V

Input/Output Capacitance C

I/O

10 pF

ELECTRICAL CHARACTERISTICS (continued)

IN1

= +6.5V to +13.2V, V

IN2

= +10V, V

IN3

to V

IN6

= +2.7V to +5.5V, AUXIN_ = GPI_ = GND, MARGIN = MR = DBP, T

= -40°Cto

+85°C, unless otherwise noted. Typical values are at T

= +25°C.) (Notes 1 and 2)

1 2 3 4 5 6 7 8 9 ... 50 51

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