MCP9804 Microchip Technology, MCP9804 Datasheet
MCP9804
Manufacturer Part Number
MCP9804
Description
Accuracy Digital Temperature Sensor
Manufacturer
Microchip Technology
Datasheet
1.MCP9804.pdf
(54 pages)
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Features
• Accuracy:
• User Selectable Measurement Resolution:
• User Programmable Temperature Limits:
• User Programmable Temperature Alert Output
• Operating Voltage Range: 2.7V to 5.5V
• Operating Current: 200 µA (typical)
• Shutdown Current: 0.1 µA (typical)
• 2-wire Interface: I
• Available Packages: 2x3 DFN-8, MSOP-8
Typical Applications
• General Purpose
• Industrial Applications
• Industrial Freezers and Refrigerations
• Food Processing
• Personal Computers and Servers
• PC Peripherals
• Consumer Electronics
• Hand-held/Portable Devices
Temperature Accuracy
© 2009 Microchip Technology Inc.
- ±0.25°C (typical) from -40°C to +125°C
- ±1°C (maximum) from -40°C to +125°C
- 0.5°C, 0.25°C, 0.125°C, 0.0625°C
- Temperature Window Limit
- Critical Temperature Limit
40%
30%
20%
10%
0%
±0.25°C Typ. Accuracy Digital Temperature Sensor
T
V
2787 units
A
DD
= -40°C to 125°C
= 3.3V
Temperature Accuracy (°C)
2
C/SMBus Compatible
Description
Microchip
temperature sensor converts temperatures between
-40°C and +125°C to a digital word with ±0.25°C/±1°C
(typical/maximum) accuracy.
The
registers that provide flexibility temperature sensing
applications. The registers allow user-selectable
settings such as Shutdown or low-power modes and
the specification of temperature Alert window limits and
Critical output limits. When the temperature changes
beyond the specified boundary limits, the MCP9804
outputs an Alert signal. The user has the option of
setting the Alert output signal polarity as an active-low
or active-high comparator output for thermostat
operation, or as temperature Alert interrupt output for
microprocessor-based systems. The Alert output can
also be configured as a Critical temperature output
only.
This sensor has an industry standard 100 kHz 2-wire,
SMBus/I
eight or sixteen sensors to be controlled with a single
serial bus (see
These features make the MCP9804 ideal for
sophisticated
applications.
Package Types
GND
SDA
Alert
SCL
* Includes Exposed Thermal Pad (EP); see
MCP9804
8-Pin 2x3 DFN *
2
1
2
3
4
C compatible serial interface, allowing up to
Technology
EP
MCP9804
9
Table 3-2
multi-zone
comes
8
7
6
5
V
A0
A1
A2
DD
for available Address codes).
Inc.’s
with
GND
SDA
Alert
SCL
temperature-monitoring
www.DataSheet4U.com
user-programmable
8-Pin MSOP
1
2
3
4
MCP9804
DS22203A-page 1
Table
8
7
6
5
V
A0
A1
A2
3-1.
digital
DD
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