Rainbow-electronics LM19 Bedienungsanleitung PDF herunterladen

LM19

2.4V, 10µA, TO-92 Temperature Sensor

General Description

The LM19 is a precision analog output CMOS integrated-

circuit temperature sensor that operates over a −55˚C to

+130˚C temperature range. The power supply operating

range is +2.4 V to +5.5 V. The transfer function of LM19 is

predominately linear, yet has a slight predictable parabolic

curvature. The accuracy of the LM19 when specified to a

parabolic transfer function is

2.5˚C at an ambient tempera-

ture of +30˚C. The temperature error increases linearly and

reaches a maximum of

3.8˚C at the temperature range

extremes. The temperature range is affected by the power

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

the temperature range extremes are +130˚C and −55˚C.

Decreasing the power supply voltage to 2.4 V changes the

negative extreme to −30˚C, while the positive remains at

+130˚C.

The LM19’s quiescent current is less than 10 µA. Therefore,

self-heating is less than 0.02˚C in still air. Shutdown capa-

bility for the LM19 is intrinsic because its inherent low power

consumption allows it to be powered directly from the output

of many logic gates or does not necessitate shutdown at all.

Applications

n Cellular Phones

n Computers

n Power Supply Modules

n Battery Management

n FAX Machines

n Printers

n HVAC

n Disk Drives

n Appliances

Features

n Rated for full −55˚C to +130˚C range

n Available in a TO-92 package

n Predictable curvature error

n Suitable for remote applications

Key Specifications

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

+16 µA −2.5 mV (max)

Typical Application

Output Voltage vs Temperature

20004002

= (−3.88x10

−6

) + (−1.15x10

−2

xT) + 1.8639

where:

T is temperature, and V

is the measured output voltage of the LM19.

20004024

FIGURE 1. Full-Range Celsius (Centigrade) Temperature Sensor (−55˚C to +130˚C)

Operating from a Single Li-Ion Battery Cell

January 2003

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

1 2 3 4 5 6 7 8

Inhaltsverzeichnis

Seite 1 - Typical Application

LM192.4V, 10µA, TO-92 Temperature SensorGeneral DescriptionThe LM19 is a precision analog output CMOS integrated-circuit temperature sensor that opera

Seite 2 - Ordering Information

Typical Application (Continued)Temperature (T) Typical VO+130˚C +303 mV+100˚C +675 mV+80˚C +919 mV+30˚C +1515 mV+25˚C +1574 mV0˚C +1863.9 mV−30˚C +220

Seite 3 - Electrical Characteristics

Absolute Maximum Ratings (Note 1)Supply Voltage +6.5V to −0.2VOutput Voltage (V++ 0.6 V) to−0.6 VOutput Current 10 mAInput Current at any pin (Note 2)

Seite 4 - 1.0 LM19 Transfer Function

Electrical Characteristics (Continued)Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings

Seite 5 - 3.0 Capacitive Loads

1.0 LM19 Transfer Function (Continued)2.0 MountingThe LM19 can be applied easily in the same way as otherintegrated-circuit temperature sensors. It ca

Seite 6 - 4.0 Applications Circuits

3.0 Capacitive Loads (Continued)4.0 Applications Circuits2000401620004033R(Ω) C (µF)200 1470 0.1680 0.011 k 0.001FIGURE 5. LM19 with Filter for Noisy

Seite 7 - 20004028

4.0 Applications Circuits (Continued)20004028Most CMOS ADCs found in ASICs have a sampled data comparator input structure that is notorious for causin

Seite 8

Physical Dimensions inches (millimeters) unless otherwise noted3-Lead TO-92 Plastic Package (Z)Order Number LM19CIZNS Package Number Z03ALIFE SUPPORT

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Rainbow-electronics LM19 Bedienungsanleitung

Stöbern Sie online oder laden Sie Bedienungsanleitung nach Sensoren Rainbow-electronics LM19 herunter. Rainbow Electronics LM19 User Manual Benutzerhandbuch

Inhaltsverzeichnis

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