Rainbow-electronics MAX6642 Bedienungsanleitung PDF herunterladen (Seite 2)

MAX6642

±1°C, SMBus-Compatible Remote/Local

Temperature Sensor with Overtemperature Alarm

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= +3.0V to +5.5V, T

= -40°C to +125°C, unless otherwise specified. Typical values are at V

= +3.3V and T

= +25°C.) (Note 1)

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

operation 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.

All Voltages Referenced to GND

...........................................................................-0.3V to +6V

DXP.............................................................-0.3V to (V

+ 0.3V)

SCLK, SDA, ALERT ..................................................-0.3V to +6V

SDA, ALERT Current ...........................................-1mA to +50mA

Continuous Power Dissipation (T

= +70°C)

6-Pin TDFN (derate 24.4mW/°C above +70°C) .........1951mW

ESD Protection (all pins, Human Body Model) ................±2000V

Junction Temperature......................................................+150°C

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

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

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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage V

3.0 5.5 V

0.25 °C

Temperature Resolution

10 Bits

= +60°C to +100°C,

= +25°C to +85°C

-1.0 +1.0

= 0°C to +125°C -3.0 +3.0

Remote Temperature Error V

= 3.3V

= +125°C to +150°C -3.5 +3.5

°C

= +60°C to +100°C -2.0 +2.0

Local Temperature Error V

= 3.3V

= 0°C to +125°C -3.0 +3.0

°C

Supply Sensitivity of Temperature

Error

±0.2 °C/V

Undervoltage Lockout Threshold UVLO Falling edge of V

disables ADC 2.4 2.7 2.95 V

Undervoltage Lockout Hysteresis 90 mV

Power-On-Reset (POR) Threshold V

falling edge 1.5 2.0 2.4 V

POR Threshold Hysteresis 90 mV

Standby Supply Current SMBus static 3 10 µA

Operating Current During conversion 0.5 1.0 mA

Average Operating Current 260 µA

Conversion Time t

CONV

From stop bit to conversion completion 106 125 143 ms

Conversion Rate f

CONV

8Hz

High level 80 100 120

Remote-Diode Source Current I

Low level 8 10 12

µA

ALERT

= 0.4V 1

Output-Low Sink Current

= 0.6V 4

Output-High Leakage Current V

= V

1µA

1 2 3 4 5 6 7 ... 12 13

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