EMC1187 datasheet(11/47 Pages) MICROCHIP

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Triple Channel 1°C Temperature Sensor with Hardware Thermal Shutdown and 1.8V SMBus Communications

Datasheet

SMSC EMC1187

Revision 1.0 (07-11-13)

DATASHEET

3.3

SMBus Electrical Characteristics

1120

µA

> 16 conversions / sec, dynamic

averaging enabled

Internal Temperature Monitor

Temperature Accuracy

±0.25

±1

°C

-5°C < TA < 100°C

±2

°C

-40°C < TA < 125°C

Temperature Resolution

0.125

°C

External Temperature Monitor

Temperature Accuracy

±0.25

±1

°C

+20°C < TDIODE < +110°C

0°C < TA < 100°C

±0.5

±2

°C

-40°C < TDIODE < 127°C

Temperature Resolution

0.125

°C

Capacitive Filter

CFILTER

2.2

2.7

Connected across external diode

ALERT and SYS_SHDN pins

Output Low Voltage

VOL

0.4

ISINK = 8mA

Leakage Current

ILEAK

±5

µA

ALERT and

pins

Device powered or unpowered

TA < 85°C

pull-up voltage < 3.6V

Table 3.3 SMBus Electrical Specifications

VDD = 3.0 to 3.6V, TA = -40°C to 125°C, all typical values are at TA = 27°C unless otherwise noted.

CHARACTERISTIC

SYMBOL

MIN

TYP

MAX

UNITS

CONDITIONS

SMBus Interface

Input High Voltage

VIH

1.4

VDD

5V Tolerant. Voltage threshold

based on 1.8V operation

Input Low Voltage

VIL

-0.3

0.8

5V Tolerant. Voltage threshold

based on 1.8V operation

Leakage Current

ILEAK

±5

µA

Powered or unpowered

TA < 85°C

Hysteresis

Input Capacitance

CIN

5pF

Output Low Sink Current

IOL

8.2

SMDATA = 0.4V

Table 3.2 Electrical Specifications (continued)

VDD = 3.0V to 3.6V, TA = -40°C to 125°C, all typical values at TA = 27°C unless otherwise noted.

CHARACTERISTIC

SYMBOL

MIN

TYP

MAX

UNITS

CONDITIONS

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