LM62EVAL National Semiconductor, LM62EVAL Datasheet

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LM62EVAL

Manufacturer Part Number
LM62EVAL
Description
EVALUATION BOARD FOR LM62
Manufacturer
National Semiconductor
Datasheets

Specifications of LM62EVAL

Sensor Type
Temperature
Sensing Range
0°C ~ 90°C
Interface
Analog
Sensitivity
±2°C
Voltage - Supply
2.7 V ~ 10 V
Embedded
No
Utilized Ic / Part
LM62
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*LM62EVAL
© 2010 National Semiconductor Corporation
2.7V, 15.6 mV/°C SOT-23 Temperature Sensor
General Description
The LM62 is a precision integrated-circuit temperature sensor
that can sense a 0°C to +90°C temperature range while op-
erating from a single +3.0V supply. The LM62's output voltage
is linearly proportional to Celsius (Centigrade) temperature
(+15.6 mV/°C) and has a DC offset of +480 mV. The offset
allows reading temperatures down to 0°C without the need for
a negative supply. The nominal output voltage of the LM62
ranges from +480 mV to +1884 mV for a 0°C to +90°C tem-
perature range. The LM62 is calibrated to provide accuracies
of ±2.0°C at room temperature and +2.5°C/−2.0°C over the
full 0°C to +90°C temperature range.
The LM62's linear output, +480 mV offset, and factory cali-
bration simplify external circuitry required in a single supply
environment where reading temperatures down to 0°C is re-
quired. Because the LM62's quiescent current is less than
130 μA, self-heating is limited to a very low 0.2°C in still air.
Shutdown capability for the LM62 is intrinsic because its in-
herent low power consumption allows it to be powered directly
from the output of many logic gates.
Connection Diagram
LM62BIM3
LM62BIM3X
LM62CIM3
LM62CIM3X
Number
Order
See NS Package Number mf03a
Top Mark
Device
Ordering Information
T7B
T7B
T7C
T7C
Top View
SOT-23
1000 Units, Tape and Reel
3000 Units, Tape and Reel
1000 Units, Tape and Reel
3000 Units, Tape and Reel
10089301
Supplied As
100893
LM62
Features
Applications
Key Specifications
Typical Application
FIGURE 1. Full-Range Centigrade Temperature Sensor
Calibrated linear scale factor of +15.6 mV/°C
Rated for full 0°C to +90°C range with 3.0V supply
Suitable for remote applications
Cellular Phones
Computers
Power Supply Modules
Battery Management
FAX Machines
Printers
HVAC
Disk Drives
Appliances
Accuracy at 25°C
Temperature Slope
Power Supply Voltage Range
Current Drain @ 25°C
Nonlinearity
Output Impedance
V
O
= (+15.6 mV/°C × T°C) + 480 mV
Temperature (T)
Stabilizing a Crystal Oscillator
+90°C
+70°C
+25°C
0°C
(0°C to +90°C)
Typical V
+1884 mV
+1572 mV
+480 mV
870 mV
±2.0 or ±3.0°C (max)
10089302
February 8, 2010
+2.7V to +10V
O
www.national.com
130 μA (max)
±0.8°C (max)
+15.6 mV/°C
4.7 kΩ (max)

Related parts for LM62EVAL

LM62EVAL Summary of contents

Page 1

... Units, Tape and Reel LM62CIM3 T7C 1000 Units, Tape and Reel LM62CIM3X T7C 3000 Units, Tape and Reel © 2010 National Semiconductor Corporation LM62 Features ■ Calibrated linear scale factor of +15.6 mV/°C ■ Rated for full 0°C to +90°C range with 3.0V supply ■ ...

Page 2

Absolute Maximum Ratings Supply Voltage Output Voltage Output Current Input Current at any pin (Note 2) Storage Temperature Junction Temperature, max (T ) JMAX ESD Susceptibility (Note 3) : Electrical Characteristics Unless otherwise noted, these specifications apply for +V limits ...

Page 3

Typical Performance Characteristics circuit board as shown in Figure 2. Thermal Resistance Junction to Air Thermal Response in Still Air with Heat Sink Thermal Response in Still Air without a Heat Sink To generate these curves the LM62 was mounted ...

Page 4

Accuracy vs Temperature Supply Voltage vs Supply Current Circuit Board FIGURE 2. Printed Circuit Board Used for Heat Sink to Generate All Curves. ½ Square Printed Circuit Board with 2 oz. www.national.com 10089310 10089312 10089314 Copper Foil or Similar. 4 ...

Page 5

Mounting The LM62 can be applied easily in the same way as other integrated-circuit temperature sensors. It can be glued or ce- mented to a surface. The temperature that the LM62 is sens- ing will be within about +0.2°C ...

Page 6

Applications Circuits FIGURE 8. Conserving Power Dissipation with Shutdown www.national.com FIGURE 6. Simplified Schematic FIGURE 7. Centigrade Thermostat 6 10089317 10089318 10089319 ...

Page 7

Physical Dimensions inches (millimeters) unless otherwise noted SOT-23 Molded Small Outline Transistor Package (M3) Order Number LM62BIM3 or LM62CIM3 NS Package Number mf03a 7 www.national.com ...

Page 8

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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