TMP432ADGST datasheet(6/47 Pages) TI1

部品番号	TMP432ADGST

部品情報	Temperature Sensor

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TMP431, TMP432

SBOS441G – SEPTEMBER 2009 – REVISED DECEMBER 2015

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6.5 Electrical Characteristics

at TA = –40°C to 125°C and V+ = 2.7 V to 5.5 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

TEMPERATURE ERROR

TA = –40°C to 125°C

±1.25

±2.5

TELOCAL

Local temperature sensor

°C

TA = 0°C to 100°C, V+ = 3.3 V

±0.25

±1

TA = 0°C to 100°C, TDIODE = –40°C to 150°C, V+ = 3.3 V

±0.25

±1

TEREMOTE

Remote temperature sensor (1)

TA = –40°C to 100°C, TDIODE = –40°C to 150°C, V+ = 3.3 V

±0.5

±1.5

°C

TA = –40°C to 125°C, TDIODE = –40°C to 150°C

±3

±5

vs Supply (Local/Remote)

V+ = 2.7 V to 5.5 V

±0.2

±0.5

°C/V

TEMPERATURE MEASUREMENT CONVERSION TIME (PER CHANNEL)

Local channel

12

15

17

ms

Remote channel

RC = 1

97

126

137

ms

Beta correction enabled (2)

RC = 0

36

47

52

RC = 1

72

93

100

ms

Beta correction disabled (3)

RC = 0

33

44

47

TEMPERATURE MEASUREMENT RESOLUTION

Local channel

12

Bits

Remote channel

12

Bits

TEMPERATURE MEASUREMENT REMOTE SENSOR SOURCE CURRENTS

High

120

μA

Series resistance (beta correction) (4)

Medium-high

60

μA

Medium-low

12

μA

Low

6

μA

1.000(2)

η

Remote transistor ideality factor

TMP43x optimized ideality factor

1.008(3)

β

Beta correction range

0.1

27

SMBus INTERFACE

Logic input high voltage

VIH

2.1

V

(SCL, SDA)

VIL

Logic input low voltage (SCL, SDA)

0.8

V

Hysteresis

500

mV

SMBus output low sink current

6

mA

VOL

SDA output low voltage

IOUT = 6 mA

0.15

0.4

V

Logic input current

0

≤ VIN ≤ 6 V

–1

1

μA

SMBus input capacitance

3

pF

(SCL, SDA)

SMBus clock frequency

3.4

MHz

SMBus timeout

25

32

35

ms

SCL falling edge to SDA valid time

1

μs

DIGITAL OUTPUTS

VOL

Output low voltage

IOUT = 6 mA

0.15

0.4

V

IOH

High-level output leakage current

VOUT = V+

0.1

1

μA

ALERT/THERM2 output low

ALERT/THERM2 forced to 0.4 V

6

mA

sink current

THERM output low sink current

THERM2 forced to 0.4 V

6

mA

(1)

Tested with less than 5-

Ω effective series resistance and 100-pF differential input capacitance. TA is the ambient temperature of the

TMP43x. TDIODE is the temperature at the remote diode sensor.

(2)

Beta correction configuration set to 1000 and sensor is GND collector-connected (PNP collector to ground).

(3)

Beta correction configuration set to 0111 or sensor is diode-connected (base shorted to collector).

(4)

If beta correction is disabled (0111), then up to 1-k

Ω of series line resistance is cancelled; if beta correction is enabled (1xxx), up to

300

Ω is cancelled.

6

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