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TMP451 Datasheet(PDF) 3 Page - Texas Instruments

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Part # TMP451
Description  짹1째C Remote and Local Temperature Sensor with 管-Factor and Offset Correction
PDF  27 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TMP451 Datasheet(HTML) 3 Page - Texas Instruments

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TMP451
www.ti.com
SBOS686 – JUNE 2013
ELECTRICAL CHARACTERISTICS
At TA = –40°C to +125°C and V+ = 3.3 V, unless otherwise noted.
TMP451
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
TEMPERATURE ERROR
TA = 0°C to +70°C
±0.25
±1
°C
TELOCAL
Local temperature sensor
TA = –40°C to +125°C
±1
±2
°C
TA = 0°C to +70°C, TD = –55°C to +150°C
±0.25
±1
°C
TEREMOTE
Remote temperature sensor(1)
TA = –40°C to +100°C, TD = –55°C to +150°C
±1
±2
°C
TA = –40°C to +125°C, TD = –55°C to +150°C
±2
±4
°C
vs Supply (local or remote)
V+ = 1.7 V to 3.6 V
±0.1
±0.25
°C/V
TEMPERATURE MEASUREMENT
Conversion time
One-Shot mode, local and remote total
31
34
ms
Local temperature
12
Bits
sensor
Resolution
Remote
temperature
12
Bits
sensor
High
Series resistance 1 k
Ω max
120
μA
Remote sensor
Medium
45
μA
source currents
Low
7.5
μA
η
Remote transistor ideality factor
TMP451 optimized ideality factor
1.008
SMBus INTERFACE
VIH
High-level input voltage
1.4
V
VIL
Low-level input voltage
0.45
V
Hysteresis
200
mV
SMBus output low sink current
6
mA
VOL
Low-level output voltage
IOUT = 6 mA
0.15
0.4
V
Logic input current
0 V
≤ VIN ≤ 3.6 V
–1
+1
μA
SMBus input capacitance
3
pF
SMBus clock frequency
0.01
2.5
MHz
SMBus timeout
20
25
30
ms
SCL falling edge to SDA valid time
1
μs
DIGITAL OUTPUTS ( THERM, ALERT/THERM2 )
VOL
Low-level output voltage
IOUT = 6 mA
0.15
0.4
V
IOH
High-level output leakage current
VOUT = V+
1
μA
POWER SUPPLY
V+
Specified voltage range
1.7
3.6
V
0.0625 conversions per second
27
40
μA
16 conversions per second
165
250
μA
32 conversions per second
300
450
μA
IQ
Quiescent current
Serial bus inactive, shutdown mode
3
8
μA
Serial bus active, fS = 400 kHz, shutdown mode
90
μA
Serial bus active, fS = 2.5 MHz, shutdown mode
350
μA
POR
Power-on reset threshold
1.2
1.55
V
(1)
Tested with less than 5-
Ω effective series resistance and 100-pF differential input capacitance.
Copyright © 2013, Texas Instruments Incorporated
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