TMP461 (ACTIVE)

High-Accuracy Remote and Local Temperature Sensor with Pin-Programmable Bus Address

 

Description

The TMP461 device is a high-accuracy, low-power remote temperature sensor monitor with a built-in local temperature sensor. The remote temperature sensors are typically low-cost discrete NPN or PNP transistors, or substrate thermal transistors or diodes that are integral parts of microprocessors, microcontrollers, or field-programmable gate arrays (FPGAs). Temperature is represented as a 12-bit digital code for both local and remote sensors, giving a resolution of 0.0625°C. The two-wire serial interface accepts the SMBus communication protocol with up to nine different pin-programmable addresses.

Advanced features [such as series resistance cancellation, programmable nonideality factor (η-factor), programmable offset, programmable temperature limits, and a programmable digital filter] are combined to provide a robust thermal monitoring solution with improved accuracy and noise immunity.

The TMP461 is ideal for multi-location, high-accuracy temperature measurements in a variety of communication, computing, instrumentation, and industrial applications. The device is specified for operation over a supply voltage range of 1.7 V to 3.6 V, and a temperature range of –40°C to 125°C.

Features

  • Remote Diode Temperature Sensor Accuracy: ±0.75°C
  • Local Temperature Sensor Accuracy: ±1°C
  • Resolution for Local and Remote Channels: 0.0625°C
  • Supply and Logic Voltage Range: 1.7 V to 3.6 V
  • 35-µA Operating Current (1 SPS),
    3-µA Shutdown Current
  • Series Resistance Cancellation
  • η-Factor and Offset Correction
  • Programmable Digital Filter
  • Diode Fault Detection
  • Two-Wire and SMBus™ Serial Interface Compatible with Pin-Programmable Address
  • 10-Lead WQFN Package

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Parametrics Compare all products in Remote / Multi-channel Temperature Sensors

 
Remote Channel
Local Sensor Accuracy (Max) (+/- C)
Remote Sensor Accuracy (Max) (+/- C)
Remote Diode Temp Range for Listed Accuracy (C)
Remote Temp Resolution (Max) (bits)
Remote Sensor Correction
Temp Resolution (Max) (bits)
Operating Temperature Range (C)
Supply Voltage (Min) (V)
Supply Voltage (Max) (V)
Supply Current (Typ) (uA)
Interface
Features
Rating
Package Group
Package Size: mm2:W x L (PKG)
TMP461 TMP411 TMP421 TMP422 TMP423 TMP451
1    1    1    2    3    1   
1    2.5    2.5    2.5    2.5    1   
0.75    1    1    1    1    1   
-55 to 150    -40 to 150    -40 to 150    -40 to 150    -40 to 150    -55 to 150   
12    12    12    12    12    12   
Offset Correction Register
Series Resistance Cancellation
n-Factor Correction   
Series Resistance Cancellation
n-Factor Correction   
Series Resistance Cancellation
n-Factor Correction   
Series Resistance Cancellation
n-Factor Correction   
Series Resistance Cancellation
n-Factor Correction   
n-Factor Correction   
12    12    12    12    12    12   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125   
1.7    2.7    2.7    2.7    2.7    1.7   
3.6    5.5    5.5    5.5    5.5    3.6   
35    400    400    400    400    35   
I2C
SMBus   
I2C
SMBus   
I2C
SMBus   
I2C
SMBus   
I2C
SMBus   
I2C
SMBus   
Programmable Alert
Remote diode fault detection   
Programmable Alert
Shutdown   
Shutdown    Shutdown    Shutdown    Dynamic Averaging
Programmable Alert
Shutdown   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
QFN    SOIC
VSSOP   
DSBGA
SOT-23   
SOT-23    SOT-23    WSON   
10QFN: 4 mm2: 2 x 2(QFN)    8SOIC: 29 mm2: 6 x 4.9(SOIC)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
See datasheet (DSBGA)
8SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)   
8SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)    8SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)    See datasheet (WSON)   

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