MCP9844_14 Datasheet, PDF (1/40 Pages) Microchip Technology – ±1°C Accurate, 1.8V Digital Temperature Sensor

MCP9844
±1°C Accurate, 1.8V Digital Temperature Sensor
Features:
• 1MHz, 2-Wire I²C™ Interface
• User-Selectable Measurement Resolution:
- +0.5°C, +0.25°C, +0.125°C, +0.0625°C
• User-Programmable Temperature Limits:
- Temperature Window Limit
- Critical Temperature Limit
• User-Programmable Temperature Alert Output
• Specified V_DD Range: 1.7V to 3.6V
• Operating Current: 100 µA (typical)
• Available Package: 8-Pin TDFN
Temperature Sensor Features:
• Temperature-to-Digital Converter (°C)
• Sensor Accuracy:
- ±0.2°C/±1°C (typ./max.)  +75°C to +95°C
- ±0.5°C/±2°C (typ./max.)  +40°C to +125°C
- ±1°C/±3°C (typ./max.)  -40°C to +125°C
Typical Applications:
• Temperature Sensing for Solid State Drive (SSD)
• General Purpose Temperature Datalog
• General Purpose
• Industrial Applications
• Industrial Freezers and Refrigerators
• Food Processing
• Personal Computers and Servers
• PC Peripherals
• Consumer Electronics
• Handheld/Portable Devices
3.0
V_DD = 1.7 V to 3.6 V
2.0
16 units
Spec. Limits
1.0
0.0
-1.0
-2.0
+Std. Dev.
Average
-Std. Dev.
-3.0
-40 -20 0 20 40 60 80 100 120
T_A (°C)
Description:
Microchip Technology Inc.’s MCP9844 digital
temperature sensor converts temperature from -40°C
to +125°C to a digital word. It provides an accuracy of
±0.2°C/±1°C (typical/maximum) from +75°C to +95°C
with an operating voltage of 1.7V to 3.6V.
The MCP9844 digital temperature sensor comes with
user-programmable registers that provide flexibility for
temperature sensing applications. The registers allow
user-selectable settings such as Shutdown or Low-
Power modes, and the specification of temperature
event boundaries. When the temperature changes
beyond the specified event boundary limits, the
MCP9844 outputs an Alert signal at the Event pin. The
user has the option of setting the temperature event
output signal polarity as either an active-low or active-
high comparator output for the thermostat operation, or
as a temperature event interrupt output for
microprocessor-based systems.
This sensor has an industry standard I²C Fast Mode
Plus compatible 1 MHz serial interface.
Package Types
8-Pin 2x3 TDFN *
A0 1
8 V_DD
A1 2 _EP 7 Event
A2 3
9
6 SCL
GND 4
5 SDA
* Includes Exposed Thermal Pad (EP); see Table 3-1.
 2013 Microchip Technology Inc.
DS20005192B-page 1