MCP9844 datasheet(1/44 Pages) MICROCHIP

部件名	MCP9844

功能描述	짹1째C Accurate, 1.8V Digital Temperature Sensor

PDF	44 Pages

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制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

标志

1 / 44 page

 2013 Microchip Technology Inc.

DS20005192A-page 1

MCP9844

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 VDD 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 (Grade B):

- ±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

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

-1.0

0.0

1.0

2.0

3.0

V

DD = 1.7 V to 3.6 V

16 units

Spec. Limits

+Std. Dev.

Average

-3.0

-2.0

-40

-20

0

20

40

60

80

100

120

T

A (°C)

g

-Std. Dev.

8-Pin 2x3 TDFN *

* Includes Exposed Thermal Pad (EP); see Table 3-1.

SCL

Event

SDA

A1

A2

1

2

3

4

8

7

6

5

GND

A0

VDD

EP

9

±1°C Accurate, 1.8V Digital Temperature Sensor

类似零件编号 - MCP9844

制造商	部件名	数据表	功能描述
Microchip Technology	MCP9844T-BE/MNY	576Kb / 40P	짹1째C Accurate, 1.8V Digital Temperature Sensor 03/25/14
Microchip Technology	MCP9844	576Kb / 40P	짹1째C Accurate, 1.8V Digital Temperature Sensor 03/25/14

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