LM61
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SNIS121I –JUNE 1999–REVISED FEBRUARY 2013
LM61 2.7V, SOT-23 or TO-92 Temperature Sensor
Check for Samples: LM61
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FEATURES
DESCRIPTION
The LM61 is
a
precision integrated-circuit
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Calibrated Linear Scale Factor of +10 mV/°C
Rated for Full −30° to +100°C Range
Suitable for Remote Applications
UL Recognized Component
temperature sensor that can sense a −30°C to
+100°C temperature range while operating from a
single +2.7V supply. The LM61's output voltage is
linearly proportional to Celsius (Centigrade)
temperature (+10 mV/°C) and has a DC offset of
+600 mV. The offset allows reading negative
temperatures without the need for a negative supply.
The nominal output voltage of the LM61 ranges from
+300 mV to +1600 mV for a −30°C to +100°C
temperature range. The LM61 is calibrated to provide
accuracies of ±2.0°C at room temperature and ±3°C
over the full −25°C to +85°C temperature range.
APPLICATIONS
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Cellular Phones
Computers
Power Supply Modules
Battery Management
FAX Machines
Printers
The LM61's linear output, +600 mV offset, and factory
calibration simplify external circuitry required in a
single supply environment where reading negative
temperatures is required. Because the LM61's
quiescent current is less than 125 μA, self-heating is
limited to a very low 0.2°C in still air. Shutdown
capability for the LM61 is intrinsic because its
inherent low power consumption allows it to be
powered directly from the output of many logic gates.
HVAC
Disk Drives
Appliances
Table 1. Key Specifications
VALUE
±2.0 or ±3.0
±4.0
UNIT
Accuracy at 25°C
°C (max)
°C (max)
°C (max)
mV/°C
Accuracy for −30°C to +100°C
Accuracy for −25°C to +85°C
Temperature Slope
±3.0
+10
Power Supply Voltage Range
Current Drain @ 25°C
Nonlinearity
+2.7 to +10
125
V
µA (max)
°C (max)
Ω (max)
±0.8
Output Impedance
800
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1999–2013, Texas Instruments Incorporated