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MCP9902

Status: In Production

Features:

  • Programmable SMBus Address
  • supports transistor and diode model CPU thermal diodes
  • Automatically determines external diode type and optimal settings
  • Resistance Error Correction
  • ±1°C Accuracy (-40°C < TREMOTE < 105°C)
  • 0.125°C resolution
  • Supports up to 2.2nF diode filter capacitor
  • ±1°C accuracy (-40°C < TAMBIENT < 65°C)
  • 0.125°C resolution
  • 3.3V Supply Voltage
  • Programmable temperature limits for ALERT# and THERM#
  • Available in small 8-pin 2mm x 2mm WDFN RoHS compliant package
  • Remote Radio Unit
  • Base Station
  • Industrial
  • Industrial Freezers
  • Food Preparation
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The MCP9902 is a high accuracy, low cost, System Management Bus (SMBus) temperature sensor (shared data sheet with MCP9903 & MCP9904). Advanced features such as Resistance Error Correction (REC), Beta Compensation (to support CPU diodes requiring the BJT/transistor model including 45nm, 65nm and 90nm processors) and automatic diode type detection combine to provide a robust solution for complex environmental monitoring applications.

The MCP9902 monitors two temperature channels (one external and one internal). It provides ±1°C accuracy for both external and internal diode temperatures.

Resistance Error Correction automatically eliminates the temperature error caused by series resistance allowing greater flexibility in routing thermal diodes. Beta Compensation eliminates temperature errors caused by low, variable beta transistors common in today's fine geometry processors. The automatic beta detection feature monitors the external diode/transistor and determines the optimum sensor settings for accurate temperature measurements regardless of processor technology. This frees the user from providing unique sensor configurations for each temperature monitoring application. These advanced features plus ±1° measurement accuracy provide a low-cost, highly flexible and accurate solution for critical temperature monitoring applications.

Additional Features

    Features

    • Programmable SMBus Address
    • Support for diodes requiring the BJT/transistor model
      • supports transistor and diode model CPU thermal diodes
    • Automatically determines external diode type and optimal settings
    • Resistance Error Correction
    • External Temperature Monitors
      • ±1°C Accuracy (-40°C < TREMOTE < 105°C)
      • 0.125°C resolution
      • Supports up to 2.2nF diode filter capacitor
    • Internal Temperature Monitor
      • ±1°C accuracy (-40°C < TAMBIENT < 65°C)
      • 0.125°C resolution
    • 3.3V Supply Voltage
    • Programmable temperature limits for ALERT# and THERM#
    • Available in small 8-pin 2mm x 2mm WDFN RoHS compliant package

    Applications

    • Remote Radio Unit
    • Base Station
    • Industrial
    • Industrial Freezers
    • Food Preparation
Parametrics
Name
Value
# Temps Monitored
2
Typical Accuracy (°)
0.25
Max. Accuracy @ 25° (°)
1
Max Input/ Supply Current (µA)
430
Temp. Range (°C)
-40 to +125
Operating Voltage Range (V)
+3.0 to +3.6
Typ Supply Current (µA)
430
Alert/THERM
2
Resistance Error Correction
Yes
Beta Compensation
Automatic
Ideality Factor
Yes
Device Description
Digital Temperature Sensor

Documents

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Data Sheet

Silicon Product

05/28/2015
0B

Development Environment

  • Demo & Evaluation Boards
  • Application Examples
Demo & Evaluation Boards
MCP9902 Remote Temperature Sensor Evaluation Board
MCP9902 Remote Temperature Sensor Evaluation Board ( ADM00615 )

The MCP9902 Temp Sensor Evaluation Board provides the means to demonstrate all of the MCP9902 features, and allows a  user to view and modify registers. A user may plot the temperature of the two temperature channels and set alert temperatures associated with those channels. LEDs indicating status information and test points are included to enable system voltages monitoring, using a...

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MCP9902T-AE/RW
0.010800
0.040000
8
WDFN
2x2x0.8mm
Matte Tin
e3
MCP9902T-1E/RW
0.010800
0.040000
8
WDFN
2x2x0.8mm
Matte Tin
e3
MCP9902T-2E/RW
0.010800
0.040000
8
WDFN
2x2x0.8mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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