Microchip MCP9801 Manual

Microchip Ikke kategoriseret MCP9801

Læs gratis den danske manual til Microchip MCP9801 (10 sider) i kategorien Ikke kategoriseret. Denne vejledning er vurderet som hjælpsom af 24 personer og har en gennemsnitlig bedømmelse på 5.0 stjerner ud af 12.5 anmeldelser. Har du et spørgsmål om Microchip MCP9801, eller vil du spørge andre brugere om produktet?

Download PDF
Side 1/10
2010-2015 Microchip Technology Inc. DS00001001C-page 1
AN1001
INTRODUCTION
Microchip Technology Inc. provides a number of analog
and serial output Integrated Circuit (IC) temperature
sensors. Typically, these sensors are accurate at room
temperature within one degree Celsius (±1°C). How-
ever, at hot or cold temperature extremes, the accuracy
decreases nonlinearly. Normally, that nonlinearity has a
parabolic shape.
This application note derives an equation to describe
the typical nonlinear characteristics of a sensor, which
is used to determine compensation for the sensor's
accuracy error over a specified range of operating tem-
peratures. A PIC® microcontroller unit (MCU) can
compute the equation and provide a temperature read-
ing with higher accuracy.
This application note is based on MCP9700 and
MCP9701 analog-output temperature sensors and
MCP9800 serial-output temperature sensors.
SOLUTION APPROACH
Silicon characterization data is used to determine the
nonlinear sensor characteristics. From this data, an
equation is derived that describes the typical perfor-
mance of a sensor. When the corresponding coeffi-
cients for the equation are determined, the coefficients
are used to compute the compensation for the typical
sensor’s nonlinearity.
The error distribution is provided using an average and
±1 standard deviation (± before and after compensa-
tion. A total of 100 devices were used as representative
for the MCP9700 and MCP9701, while 160 devices
were used for the MCP9800.
Figure 1 shows the typical sensor accuracy before and
after compensation. It illustrates that the compensation
provides an accurate and linear temperature reading
over the sensor operating temperature range.
A PIC MCU is used to compute the equation and
compensate the sensor output to provide a linear
temperature reading.
FIGURE 1: Typical Sensor Accuracy Before and After Compensation.
Author: Ezana Haile
Microchip Technology Inc.
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
-55 -35 -15 5 25 45 65 85 105 125
Temperature (°C)
Typical Accuracy (°C)
Sensor Accuracy
Compensated Sensor Accuracy
IC Temperature Sensor Accuracy Compensation
with a PIC® Microcontroller
AN1001
DS00001001C-page 2 2010-2015 Microchip Technology Inc.
SENSOR ACCURACY
The typical sensor accuracy over the operating tem-
perature range has an accuracy error curve. At hot and
cold temperatures, the magnitude of the error increases
exponentially, resulting in a parabolic-shaped error
curve. The following figures show the average and ±1°C
standard deviation of the sensor accuracy curve for the
MCP9800, MCP9700 and MCP9701 sensors.
FIGURE 2: MCP9800 Accuracy
(160 parts).
FIGURE 3: MCP9700 Accuracy
(100 parts).
FIGURE 4: MCP9701 Accuracy
(100 parts).
The accuracy specification limits for these sensors are
published in the corresponding data sheets as plotted
in Figure 2, Figure 3 and Figure 4. Note that due to the
sensor nonlinearity at temperature extremes, the accu-
racy specification limits are widened. The reduced
accuracy at temperature extremes can be
compensated to improve sensor accuracy over the
range of operating temperatures.
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
-55 -35 -15 5 25 45 65 85 105 125
Temperature (°C)
Accuracy (°C)
+
V
V
V
VV
Average
-
V
V
V
VV
Spec. Limit
-4.0
-2.0
0.0
2.0
4.0
6.0
-55 -35 -15 5 25 45 65 85 105 125
Temperature (°C)
Accuracy (°C)
+
V
V
V
VV
Average
-
V
V
V
VV
Spec. Limit
-4.0
-2.0
0.0
2.0
4.0
6.0
-15 5 25 45 65 85 105 125
Temperature (°C)
Accuracy (°C)
+
V
V
V
VV
Average
-
V
V
V
VV
Spec. Limit

Produkt Specifikationer

Mærke: Microchip
Kategori: Ikke kategoriseret
Model: MCP9801

Har du brug for hjælp?

Hvis du har brug for hjælp til Microchip MCP9801 stil et spørgsmål nedenfor, og andre brugere vil svare dig


Ikke kategoriseret Microchip Manualer

Microchip

Microchip AT7913 Manual

1 September 2025
Microchip

Microchip ATmega1281 Manual

19 Juli 2025
Microchip

Microchip ATtiny461 Manual

19 Juli 2025
Microchip

Microchip ATxmega128D3 Manual

19 Juli 2025
Microchip

Microchip ATxmega128D4 Manual

19 Juli 2025
Microchip

Microchip ATTINY28 Manual

19 Juli 2025
Microchip

Microchip ATTINY861 Manual

19 Juli 2025
Microchip

Microchip ATmega1280 Manual

19 Juli 2025
Microchip

Microchip ATtiny84A Manual

19 Juli 2025
Microchip

Microchip ATmega645P Manual

19 Juli 2025

Ikke kategoriseret Manualer

Nyeste Ikke kategoriseret Manualer

Elektrobock

Elektrobock PT44 Manual

14 September 2025
BSS Audio

BSS Audio FDS-366T Manual

14 September 2025
Systemair

Systemair Airline R-114 Manual

14 September 2025
IFM

IFM SU2031 Manual

14 September 2025
Morel

Morel Tempo Ultra Integra 502 Manual

14 September 2025
IMC Networks

IMC Networks 232CL9R Manual

14 September 2025
Varta

Varta Speed Charger 57955 Manual

14 September 2025
Melissa & Doug

Melissa & Doug 9336 Manual

14 September 2025
Opus

Opus dataPREDATOR Manual

13 September 2025
Varta

Varta Wireless Power Bank 20000 57909 Manual

13 September 2025