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LM20

SNIS106Q – DECEMBER 1999 – REVISED JANUARY 2015

LM20 2.4-V, 10-µA, SC70, DSBGA Temperature Sensor

1 Features

3 Description

The LM20 is a precision analog output CMOS

1

•

Rated for

−55°C to 130°C Range

integrated-circuit temperature sensor that operates

•

Available in SC70 and DSBGA Package

over

−55°C to 130°C. The power supply operating

•

Predictable Curvature Error

range is 2.4 V to 5.5 V. The transfer function of LM20

is predominately linear, yet has a slight predictable

•

Suitable for Remote Applications

parabolic curvature. The accuracy of the LM20 when

•

Accuracy at 30°C ±1.5 to ±4°C (Maximum)

specified to a parabolic transfer function is ±1.5°C at

•

Accuracy at 130°C and

−55°C ±2.5 to ±5°C

an ambient temperature of 30°C. The temperature

(Maximum)

error increases linearly and reaches a maximum of

±2.5°C at the temperature range extremes. The

•

Power Supply Voltage Range 2.4 V to 5.5 V

temperature range is affected by the power supply

•

Current Drain 10

μA (Maximum)

voltage. At a power supply voltage of 2.7 V to 5.5 V,

•

Nonlinearity ±0.4% (Typical)

the temperature range extremes are 130°C and

•

Output Impedance 160

Ω (Maximum)

−55°C. Decreasing the power supply voltage to 2.4 V

changes the negative extreme to

−30°C, while the

•

Load Regulation

positive extreme remains at 130°C.

0

The LM20 quiescent current is less than 10

μA.

2 Applications

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

Shutdown capability for the LM20 is intrinsic because

•

Cellular Phones

its inherent low power consumption allows it to be

•

Computers

powered directly from the output of many logic gates

or does not necessitate shutdown.

•

Power Supply Modules

•

Battery Management

Device Information(1)

•

FAX Machines

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Printers

SC70 (5)

2.00 mm × 1.25 mm

LM20

•

HVAC

DSBGA (4)

0.96 mm × 0.96 mm

•

Disk Drives

(1) For all available packages, see the orderable addendum at

•

Appliances

the end of the data sheet.

Simplified Schematic

Output Voltage vs Temperature

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.