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MCP9903

Status: In Production

Features:

  • Programmable SMBus Address
  • supports 45nm and advanced CPU thermal diodes
  • Automatically determines external diode type and optimal settings
  • Resistance Error Correction
  • ±1°C max accuracy (-40°C < TREMOTE < 125°C)
  • 0.125°C resolution
  • Supports up to 2.2nF diode filter capacitor
  • Anti-parallel diodes for extra diode support
  • ±1°C accuracy (-40°C < TAMBIENT < 65°C)
  • ±0.125°C resolution
  • 3.3V Supply Voltage
  • Programmable temperature limits for ALERT#
  • 10-pin MSOP
  • Remote Radio Unit (RRU)
  • Basestation
  • Refrigeration
  • Industrial
  • Embedded applications
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The MCP9903/MCP9904 are high accuracy, low cost, System Management Bus (SMBus) temperature sensors. 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 MCP9903 monitors three temperature channels and the MCP9904 monitors four temperature channels. It provides ±1ºC 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 each 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°C 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 45nm and advanced CPU thermal diodes
    • Automatically determines external diode type and optimal settings
    • Resistance Error Correction
    • 2 External Temperature Monitors
      • ±1°C max accuracy (-40°C < TREMOTE < 125°C)
      • 0.125°C resolution
      • Supports up to 2.2nF diode filter capacitor
      • Anti-parallel diodes for extra diode support
    • Internal Temperature Monitor
      • ±1°C accuracy (-40°C < TAMBIENT < 65°C)
      • ±0.125°C resolution
    • 3.3V Supply Voltage
    • Programmable temperature limits for ALERT#
    • Available in these RoHS compliant packages
      • 10-pin MSOP

    Applications

    • Remote Radio Unit (RRU)
    • Basestation
    • Refrigeration
    • Industrial
    • Embedded applications
Parametrics
Name
Value
# Temps Monitored
3
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

Jump to:

Data Sheet

Silicon Product

03/21/2016
0B

Development tools data is currently unavailable.

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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
MCP9903T-AE/9Q
0.027700
0.114000
10
VDFN
3x3x0.9
NiPdAu
e4
MCP9903T-1E/9Q
0.027700
0.114000
10
VDFN
3x3x0.9
NiPdAu
e4
MCP9903T-2E/9Q
0.027700
0.114000
10
VDFN
3x3x0.9
NiPdAu
e4
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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