MIKROE-1189 mikroElektronika, MIKROE-1189 Datasheet - Page 33

• Manufacturer Part Number: MIKROE-1189
• Description: Development Boards & Kits - PIC / DSPIC MIKROMEDIA FOR PIC WORKSTATION v7
• Manufacturer: mikroElektronika

Specifications of MIKROE-1189

• Rohs: yes
• Product: Development Systems
• Tool Is For Evaluation Of: PIC18FJ, dsPIC33, PIC24, PIC32
• Core: dsPIC, PIC
• Operating Supply Voltage: 3.3 V

LM35 - Analog
Temperature Sensor
The LM35 is a low-cost precision
integrated-circuit temperature sensor,
whose
proportional to the Celsius (Centigrade)
temperature. The LM35 thus has an
advantage over linear temperature
sensors calibrated in ° Kelvin, as the
user is not required to subtract a large
constant voltage from its output to
Enabling LM35 Sensor
mikromedia
sensor using G0.0 or G0.3 microcontroller pins. The selection of either of those
two lines is done using J4 jumper. When placing the sensor in the socket make
sure that half-circle on the board’s silkscreen markings matches the rounded
part of the LM35 sensor. If you accidentally connect the sensor the other way,
it can be permanently damaged and you might need to replace it with another
one. During the sensor readings make sure that no other device is using the
selected analog line, as that may interfere with the readings.
Figure 13-1:
LM35 not
connected
output
1
™
workStation v7 enables you to get analog readings from the LM35
voltage
Figure 13-2:
LM35 placed
in socket
is
2
linearly
obtain convenient Centigrade scaling.
The LM35 does not require any external
calibration or trimming to provide
typical accuracies of ±¼°C at room
temperature and ±¾°C over a full -55
to +150°C temperature range. It has
a linear + 10.0 mV/°C scale factor
and less than 60 μA current drain. As
it draws only 60 μA from its supply, it
Figure 13-3:
LM35
connected
to G0.3 pin
3
Figure 13-4:
LM35
connected
to G0.0 pin
4
has very low self-heating,
less than 0.1°C in still air.
mikromedia
v7 provides a separate socket
(TS2) for the LM35 sensor in
TO-92 plastic packaging. Readings
are done with microcontroller using
single analog input line, which is
selected with a J4 jumper.
™
100nF
C3
workStation
Figure 13-5: LM35 connected to G0.0 pin
R5
1K
G0.3
G0.0
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