MAX31850 データシートの表示（PDF） - Maxim Integrated

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MAX31850

Cold-Junction Compensated, 1-Wire Thermocouple-to-Digital Converters

Maxim Integrated 

MAX31850/MAX31851

Cold-Junction Compensated, 1-Wire

Thermocouple-to-Digital Converters

ABSOLUTE MAXIMUM RATINGS

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

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

Continuous Power Dissipation (TA = +70NC)

TDFN (derate 16.70mW/NC above +70NC)............1333.30mW

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

Operating Temperature Range......................... -40NC to +125NC

Junction Temperature......................................................+150NC

Storage Temperature Range ........................... -65NC to +150NC

Lead Temperature (soldering, 10s).................................+300NC

Soldering Temperature (reflow) ......................................+260NC

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)

TDFN

Junction-to-Ambient Thermal Resistance (BJA)...........60NC/W

Junction-to-Case Thermal Resistance (BJC)................30NC/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.maximintegrated.com/thermal-tutorial.

DC ELECTRICAL CHARACTERISTICS

(TA = -40NC to +125NC, unless otherwise noted.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

Supply Voltage

Pullup Supply Voltage

(Notes 3, 4)

VDD Local power (Note 3, 4)

3.0

Parasite power (Note 3)

3.0

VPU

Local power (Note 3)

3.0

Input Logic-Low

VIL (Notes 4, 6)

-0.3

Local power

2.2

Input Logic-High (Note 4)

VIH

Parasite power

3.0

Output Sink Current

Standby Supply Current

Active Supply Current

DQ Input Current

Power-Supply Rejection

Input Leakage Current (AD0–AD3 Pins)

Thermocouple Input Bias Current

IL

IDDS

IDD

IDQ

IBTC

VI/O = 0.4V (Note 4)

(Notes 7, 8)

VDD = 3.7V (Note 9)

(Note 10)

(Note 3)

TA = -40°C to +125°C, 100mV across

the thermocouple inputs (Note 3)

4.0

-1

-100

TYP MAX UNITS

3.3

3.7

V

3.7

V

VDD

+0.8

V

lower

of 3.7V

or

(VDD +

0.3V)

V

lower

of 3.7V

or

(VDD +

0.3V)

mA

280 1000

nA

900 1750

FA

5

FA

-0.3

°C/V

+1

FA

+100

nA

Maxim Integrated

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