TMP461

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High accuracy remote and local temperature sensor with pin-programmable bus address

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Product details

Parameters

Local sensor accuracy (Max) (+/- C) 1 Operating temperature range (C) -40 to 125 Supply voltage (Min) (V) 1.7 Interface type I2C, SMBus, 2-Wire Supply voltage (Max) (V) 3.6 Supply current (Max) (uA) 375 Temp resolution (Max) (bits) 12 Features ALERT Remote channels (#) 1 Addresses 9 Rating Catalog open-in-new Find other Digital temperature sensors

Package | Pins | Size

WQFN (RUN) 10 4 mm² 2 x 2 open-in-new Find other Digital temperature sensors

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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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.

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Technical documentation

Design & development

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Hardware development

EVALUATION BOARDS Download
document-generic User guide
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 (...)

Features
  • Enables full evaluation of TMP461
  • Programmable non-ideality factor
  • Series resistance cancellation
  • Address select option
  • 12-bit resolution
GUIS FOR EVALUATION MODULES (EVM) Download
SBOC453.ZIP (143741 KB)

Design tools & simulation

SIMULATION MODELS Download
SLAM269.ZIP (53 KB) - IBIS Model
GERBER FILES Download
SBOC594A.ZIP (695 KB)

CAD/CAE symbols

Package Pins Download
QFN (RUN) 10 View options

Ordering & quality

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