TMP401 datasheet(6/41 Pages) TI2

6 / 41 page

TMP401

SBOS371B – AUGUST 2006 – REVISED OCTOBER 2014

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6.5 Electrical Characteristics: V+ = 3 V to 5.5 V

At TA = –40°C to +125°C, and V+ = 3 V to 5.5 V, unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

TEMPERATURE ERROR

TELOCAL

Local temperature sensor

TA = –40°C to +125°C

±1

±3

°C

TA = +15°C to +75°C, TREMOTE = –40°C to +150°C,

±1

°C

V+ = 3.3 V

TEREMOTE

Remote temperature sensor(1)

TA = –40°C to +100°C, TREMOTE = –40°C to +150°C,

±3

°C

V+ = 3.3 V

TA = –40°C to +125°C, TREMOTE = –40°C to +150°C

±5

°C

TELOCAL and TEREMOTE versus supply

V+ = 3 V to 5.5 V

±0.2

±0.5

°C/V

TEMPERATURE MEASUREMENT

Conversion time (per channel)

One-shot mode

115

TELOCAL

Bits

(programmable)

Resolution

TEREMOTE

Bits

High

Series resistance, 3 k

Ω max

120

µA

Medium high

µA

Remote sensor

source currents

Medium low

µA

Low

µA

Remote transistor ideality factor

TMP401 optimized ideality factor

1.008

SMBus INTERFACE

VIH

Logic input high voltage (SCL, SDA)

2.1

VIL

Logic input low voltage (SCL, SDA)

0.8

Hysteresis

500

SMBus output low sink current

Logic input current

–1

µA

SMBus input capacitance (SCL, SDA)

SMBus timeout

DIGITAL OUTPUTS

VOL

Output low voltage

IOUT = 6 mA

0.15

0.4

IOH

High-level output leakage current

VOUT = V+

0.1

µA

ALERT/THERM2 output low sink current

ALERT/THERM2 forced to 0.4 V

THERM output low sink current

THERM forced to 0.4 V

POWER SUPPLY

V+

Specified voltage range

5.5

0.0625 conversions per second

µA

8 conversions per second

390

450

µA

Quiescent current

Serial bus inactive, shutdown mode

µA

Serial bus active, fS = 400 kHz, shutdown mode

µA

Serial bus active, fS = 2.5 MHz, shutdown mode

350

µA

UVLO

Undervoltage lock out

2.3

2.4

2.6

POR

Power-on reset threshold

1.6

2.3

TEMPERATURE RANGE

Specified range

–40

+125

°C

Storage range

–60

+130

°C

θJA

Thermal resistance, VSSOP-8

150

°C/W

(1)

Tested with less than 5-

Ω effective series resistance and 100-pF differential input capacitance.

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