Information

Texas Instruments Signal Chain Guide 2013 | 79
Monitoring and Control
Temperature Sensors
Get more information: www.ti.com/product/LMT88
2.4 V, 10 µA, SC70, Temperature Sensor
LMT88
LMT88 functional block diagram
The LMT88 is a precision analog output CMOS integrated-circuit temperature sensor
that operates over a −55°C to 130°C temperature range. The power supply operating
range is 2.4 V to 5.5 V. The transfer function of LMT88 is predominantly linear, yet has
a slight predictable parabolic curvature. The accuracy of the LMT88 when specified to
a parabolic transfer function is ±1.5°C at an ambient temperature of 30°C. The
LMT88 is a cost-competitive alternative to thermistors. To learn more, visit
ti.com/analogtempsensors
Key Features
• Cost-effectivealternativetothermistors
• Verylowpowerconsumption
• Highlylinearoutput
• Simpletouse
• Ratedforfull−55°Cto+130°Crange
• AvailableinanSC70package
• Predictablecurvatureerror
Applications
• Industrial
• HVAC
• Computers,printers
• Automotive
• Portablemedicalinstruments
• Batterymanagement
• Powersupplymodules
MSP430
TM
+1.5 V to +5.5 V
GND
OUTV
DD
Input
Pin
C
FILTER
Analog
Sensor
LMT8x
10 -bit
ADC
M
U
X
Voltage
Reference
C
BP
AVcc
Analog Temperature Sensors
Device Description
Accuracy
Over Temp
Range
(˚C) (max)
Specified
Temp Range
(˚C)
Temp
Resolution
(Bits)
Supply
Voltage
(V)
I
Q
(µA)
(typ)
HiRel
Avail. Package Price*
LM135 Two Terminal Temperature Sensor 3 –55 to 150 — 5 1000 Y PFM-3 5.65
LM135A Two Terminal Temperature Sensor 1 — — 5 1000 Y PFM-3 11.15
LM19 –2.4 V, 10 C39 µA, TO-92 Temperature Sensor 2.5 –55 to 130 — 2.4 to 5.5 4.5 N TO-3 0.24
LM20 –2.4 V, 10 C40 µA, SC70, micro SMD
Temperature Sensor
1.5 –40 to 125
–55 to 130
–30 to 130
— 2.4 to 5.5 4.5 N DSBGA-4,
SOT-5 0.32
LM234 3-Terminal Adjustable Current Source — –25 to 100 — — — N TO-3 0.46
LM235 Two Terminal Temperature Sensor 3 –40 to 125 — 5 1000 Y PFM-3 4.59
LM235A Two Terminal Temperature Sensor 1 –40 to 125 — 5 1000 Y PFM-3 7.06
LM26LV 1.6 V, LLP-6 Factory Preset Temperature
Switch and Temperature Sensor
2.3 –40 to 150
0 to 150
— 1.6 to 5.5 8 N WSON-6 0.43
LM335 Two Terminal Temperature Sensor 6 –40 to 100 — 5 1000 Y PFM-3, TO-3,
SOIC-8
0.33
LM335A Two Terminal Temperature Sensor 3 –40 to 100 — 3 to 5.5 1000 Y PFM-3 4.12
LM34 Precision Fahrenheit Temperature Sensor 0.556 –40 to 110
0 to 100
–45.6 to 148.9
— 5 to 30 75 Y PFM-3
TO-3
SOIC-8
0.92
LM35 Precision Centigrade Temperature Sensor 0.5 0 to 100
–40 to 110
–55 to 150
— 4 to 30 56 Y PFM-3
TO-3
SOIC-8
TBD
LM45 SOT23 Precision Centigrade Temperature
Sensor
2 –20 to 100 — 4 to 10 120 N SOT-3 TBD
LM50 SOT23 Single-Supply Centigrade
Temperature Sensor
2 –25 to 100
–40 to 125
— 4 to 10 130 N SOT
-3 0.32
LM57 Resistor-Programmable Temperature Switch
and Analog Temperature Sensor
0.7 –50 to 150 — 2.4 to 5.5 24 N WSON-8 0.65
*Suggested resale price in U.S. dollars in quantities of 1,000. See www.ti.com/hirel for HiRel options.