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