8.3 System Examples

Figure 8-5 to Figure 8-7 show application circuit examples using the LM50 device. Customers must fully validate

and test any circuit before implementing a design based on an example in this section. Unless otherwise noted,

the design procedures in Full-Range Centigrade Temperature Sensor are applicable.

LM50/

LM50-Q1

U3

0.1 µF

R2

R1

VT

R3

VOUT

U1

+

-

4.1 V

R4

V+

LM7101

VTemp

V+

U2

LM4040

Copyright © 2016, Texas Instruments Incorporated

Figure 8-5. Centigrade Thermostat or Fan Controller

LM50/

LM50-Q1

ADC08031

LM4041-

ADJ

GND

OUT

100 k

FB

10 k

1 µF

+

-

1.750 V

REF

IN

3.9 k

+

Serial

Data Output

5 V

CLOCK

GND

ENABLE

+

Copyright © 2016, Texas Instruments Incorporated

125°C full scale

Figure 8-6. Temperature To Digital Converter (Serial Output)

LM50

SNIS118H – JULY 1999 – REVISED MAY 2025

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14

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