LM19

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SNIS122E – MAY 2001 – REVISED MARCH 2013

LM19 2.4V, 10µA, TO-92 Temperature Sensor

Check for Samples: LM19

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FEATURES

DESCRIPTION

The LM19 is a precision analog output CMOS

2

•

Rated for Full

−55°C to +130°C Range

integrated-circuit temperature sensor that operates

•

Available in a TO-92 Package

over a

−55°C to +130°C temperature range. The

•

Predictable Curvature Error

power supply operating range is +2.4 V to +5.5 V.

The transfer function of LM19 is predominately linear,

•

Suitable for Remote Applications

yet has a slight predictable parabolic curvature. The

•

UL Recognized Component

accuracy of the LM19 when specified to a parabolic

transfer function is ±2.5°C at an ambient temperature

APPLICATIONS

of +30°C. The temperature error increases linearly

and

reaches

a

maximum

of

±3.8°C

at

the

•

Cellular Phones

temperature range extremes. The temperature range

•

Computers

is affected by the power supply voltage. At a power

•

Power Supply Modules

supply voltage of 2.7 V to 5.5 V the temperature

range extremes are +130°C and

−55°C. Decreasing

•

Battery Management

the power supply voltage to 2.4 V changes the

•

FAX Machines

negative

extreme

to

−30°C, while the positive

•

Printers

remains at +130°C.

•

HVAC

The LM19's quiescent current is less than 10

μA.

•

Disk Drives

Therefore, self-heating is less than 0.02°C in still air.

Shutdown capability for the LM19 is intrinsic because

•

Appliances

its inherent low power consumption allows it to be

powered directly from the output of many logic gates

KEY SPECIFICATIONS

or does not necessitate shutdown at all.

•

Accuracy at +30°C ±2.5 °C (max)

•

Accuracy at +130°C &

−55°C ±3.5 to ±3.8 °C

(max)

•

Power Supply Voltage Range +2.4V to +5.5V

•

Current Drain 10

μA (max)

•

Nonlinearity ±0.4 % (typ)

•

Output Impedance 160

Ω (max)

•

Load Regulation

–

0µA < IL< +16 µA

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

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PRODUCTION DATA information is current as of publication date.

Copyright © 2001–2013, 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.