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LM45 Product Folder

SOT-23 Precision Centigrade Temperature Sensor

See Also:

LM50 - offset to remove negative supply voltage

Generic P/N 45

General
Description

Package
& Models

Samples
& Pricing

Parametric Table

Parametric Table

Temperature Min (deg C)	-20
Temperature Max (deg C)	100
Accuracy (+/-) (deg C)	2, 3
Supply Min (Volt)	4
Supply Max (Volt)	10

Quiescent Current (mA)	.16
Sensor Gain	10 mV/Deg C
Single Supply	No
Output Impedance (Ohm)	35

Datasheet

Title	Size in Kbytes	Date	View Online	Download	Receive via Email
LM45 SOT-23 Precision Centigrade Temperature Sensors	214 Kbytes	25-Jul-00	View Online	Download	Receive via Email
LM45 SOT-23 Precision Centigrade Temperature Sensors (JAPANESE)	298 Kbytes

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Package Availability, Models, Samples & Pricing

Part Number

Package

Status

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking

Type

Pins

MSL/Lead-Free Availability

Lead
Time

Qty

SPICE

IBIS

Qty

$US each

LM45BIM3

3

Full production

N/A

N/A

1K+

$0.58

reel
of
1000

T4B
XTT

10-12 weeks

0

LM45CIM3

3

Full production

N/A

N/A

1K+

$0.30

reel
of
1000

T4C
XTT

10-12 weeks

0

LM45BIM3X

3

Full production

N/A

N/A

1K+

$0.58

reel
of
3000

T4B
XTT

10-12 weeks

0

LM45CIM3X

3

Full production

N/A

N/A

1K+

$0.30

reel
of
3000

T4C
XTT

10-12 weeks

0

LM45B MDA

Full production

N/A

N/A

tray
of
N/A

-

N/A

0

LM45BI MDA

Full production

N/A

N/A

tray
of
N/A

-

N/A

0

LM45C MDA

Full production

N/A

N/A

tray
of
N/A

-

N/A

0

LM45CI MDA

Full production

N/A

N/A

tray
of
N/A

-

N/A

0

LM45B MWA

Full production

N/A

N/A

wafer jar
of
N/A

-

N/A

0

LM45BI MWA

Full production

N/A

N/A

wafer jar
of
N/A

-

N/A

0

LM45C MWA

Full production

N/A

N/A

wafer jar
of
N/A

-

N/A

0

LM45CI MWA

Full production

N/A

N/A

wafer jar
of
N/A

-

N/A

0

General Description

The LM45 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Celsius (Centigrade) temperature. The LM45 does not require any external calibration or trimming to provide accuracies of ±2°C at room temperature and ±3°C over a full -20 to +100°C temperature range. Low cost is assured by trimming and calibration at the wafer level. The LM45's low output impedance, linear output, and precise inherent calibration make interfacing to readout or control circuitry especially easy. It can be used with a single power supply, or with plus and minus supplies. As it draws only 120 µA from its supply, it has very low self-heating, less than 0.2°C in still air. The LM45 is rated to operate over a -20° to +100°C temperature range.

Features

Calibrated directly in ° Celsius (Centigrade)
Linear + 10.0 mV/°C scale factor
±3°C accuracy guaranteed
Rated for full -20° to +100°C range
Suitable for remote applications
Low cost due to wafer-level trimming
Operates from 4.0V to 10V
Less than 120 µA current drain
Low self-heating, 0.20°C in still air
Nonlinearity only ±0.8°C max over temp
Low impedance output, 20Ohm for 1 mA load

Applications

Battery Management
FAX Machines
Printers
Portable Medical Instruments
HVAC
Power Supply Modules
Disk Drives
Computers
Automotive

[Information as of 15-Jan-2004]