MAX31855EVKIT#【PDF 2/13 页】KIT EVAL FOR MAX31855

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MAX31855

Cold-Junction Compensated

Thermocouple-to-Digital Converter

ABSOLUTE MAXIMUM RATINGS

Supply Voltage Range (V CC to GND) ..................-0.3V to +4.0V

All Other Pins ............................................ -0.3V to (V CC + 0.3V)

Continuous Power Dissipation (T A = +70 N C)

SO (derate 5.9mW/ N C above +70 N C) .......................470.6mW

ESD Protection (All Pins, Human Body Model) ...................±2kV

Operating Temperature Range ........................ -40 N C to +125 N C

Junction Temperature .....................................................+150 N C

Storage Temperature Range .......................... -65 N C to +150 N C

Lead Temperature (soldering, 10s) ................................+300 N C

Soldering Temperature (reflow) .....................................+260 N C

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-

tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect device reliability.

PACKAGE THERMAL CHARACTERISTICS (Note 1)

SO

Junction-to-Ambient Thermal Resistance ( B JA ) ........170 N C/W

Junction-to-Case Thermal Resistance ( B JC ) ...............40 N C/W

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial .

RECOMMENDED OPERATING CONDITIONS

(T A = -40 N C to +125 N C, unless otherwise noted.)

PARAMETER

Power-Supply Voltage

Input Logic 0

Input Logic 1

SYMBOL

V CC

V IL

V IH

(Note 2)

CONDITIONS

MIN

3.0

-0.3

2.1

TYP

3.3

MAX

3.6

+0.8

V CC +

0.3

UNITS

V

V

V

DC ELECTRICAL CHARACTERISTICS

(3.0V P V CC P 3.6V, T A = -40 N C to +125 N C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Power-Supply Current

Thermocouple Input Bias Current

Power-Supply Rejection

I CC

T A = -40 N C to +125 N C, 100mV across the

thermocouple inputs

-100

900

-0.3

1500

+100

F A

nA

N C/V

Power-On Reset Voltage

Threshold

V POR

(Note 3)

2

2.5

V

Power-On Reset Voltage

Hysteresis

0.2

V

Output High Voltage

Output Low Voltage

V OH

V OL

I OUT = -1.6mA

I OUT = 1.6mA

V CC -

0.4

0.4

V

V

Maxim Integrated

2

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