LM61

www.ti.com

SNIS121I – JUNE 1999 – REVISED FEBRUARY 2013

LM61 2.7V, SOT-23 or TO-92 Temperature Sensor

Check for Samples: LM61

1

FEATURES

DESCRIPTION

The

LM61

is

a

precision

integrated-circuit

2

•

Calibrated Linear Scale Factor of +10 mV/°C

temperature sensor that can sense a

−30°C to

•

Rated for Full

−30° to +100°C Range

+100°C temperature range while operating from a

•

Suitable for Remote Applications

single +2.7V supply. The LM61's output voltage is

linearly

proportional

to

Celsius

(Centigrade)

•

UL Recognized Component

temperature (+10 mV/°C) and has a DC offset of

+600

mV.

The

offset

allows

reading

negative

APPLICATIONS

temperatures without the need for a negative supply.

•

Cellular Phones

The nominal output voltage of the LM61 ranges from

+300 mV to +1600 mV for a

−30°C to +100°C

•

Computers

temperature range. The LM61 is calibrated to provide

•

Power Supply Modules

accuracies of ±2.0°C at room temperature and ±3°C

•

Battery Management

over the full

−25°C to +85°C temperature range.

•

FAX Machines

The LM61's linear output, +600 mV offset, and factory

•

Printers

calibration simplify external circuitry required in a

single supply environment where reading negative

•

HVAC

temperatures

is

required.

Because

the

LM61's

•

Disk Drives

quiescent current is less than 125

μA, self-heating is

•

Appliances

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.

Table 1. Key Specifications

VALUE

UNIT

Accuracy at 25°C

±2.0 or ±3.0

°C (max)

Accuracy for

−30°C to +100°C

±4.0

°C (max)

Accuracy for

−25°C to +85°C

±3.0

°C (max)

Temperature Slope

+10

mV/°C

Power Supply Voltage Range

+2.7 to +10

V

Current Drain @ 25°C

125

µA (max)

Nonlinearity

±0.8

°C (max)

Output Impedance

800

Ω (max)

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

All trademarks are the property of their respective owners.

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.