Datasheet

LM62
www.ti.com SNIS105E –JUNE 1999–REVISED MARCH 2013
LM62 2.7V, 15.6 mV/°C SOT-23 Temperature Sensor
Check for Samples: LM62
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FEATURES
DESCRIPTION
The LM62 is a precision integrated-circuit
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• Calibrated Linear Scale Factor of +15.6 mV/°C
temperature sensor that can sense a 0°C to +90°C
• Rated for Full 0°C to +90°C Range with 3.0V
temperature range while operating from a single
Supply
+3.0V supply. The LM62's output voltage is linearly
• Suitable for Remote Applications
proportional to Celsius (Centigrade) temperature
(+15.6 mV/°C) and has a DC offset of +480 mV. The
offset allows reading temperatures down to 0°C
APPLICATIONS
without the need for a negative supply. The nominal
• Cellular Phones
output voltage of the LM62 ranges from +480 mV to
• Computers
+1884 mV for a 0°C to +90°C temperature range.
The LM62 is calibrated to provide accuracies of
• Power Supply Modules
±2.0°C at room temperature and +2.5°C/−2.0°C over
• Battery Management
the full 0°C to +90°C temperature range.
• FAX Machines
The LM62's linear output, +480 mV offset, and factory
• Printers
calibration simplify external circuitry required in a
• HVAC
single supply environment where reading
temperatures down to 0°C is required. Because the
• Disk Drives
LM62's quiescent current is less than 130 μA, self-
• Appliances
heating is limited to a very low 0.2°C in still air.
Shutdown capability for the LM62 is intrinsic because
KEY SPECIFICATIONS
its inherent low power consumption allows it to be
powered directly from the output of many logic gates.
• Accuracy at 25°C ±2.0 or ±3.0°C (max)
• Temperature Slope +15.6 mV/°C
• Power Supply Voltage Range +2.7V to +10V
• Current Drain @ 25°C 130 μA (max)
• Nonlinearity ±0.8°C (max)
• Output Impedance 4.7 kΩ (max)
Typical Application
Connection Diagram
See Package Number DBZ
V
O
= (+15.6 mV/°C × T°C) + 480 mV
Figure 1. Full-Range Centigrade Temp. Sensor
(0°C to +90°C) Stabilizing a Crystal Oscillator
Temperature (T) Typical V
O
+90°C +1884 mV
+70°C +1572 mV
+25°C 870 mV
0°C +480 mV
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PRODUCTION DATA information is current as of publication date.
Copyright © 1999–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.