Product details

Local sensor accuracy (Max) (+/- C) 2 Type Remote Operating temperature range (C) -55 to 125, 25 to 25 Supply voltage (Min) (V) 1.7 Interface type I2C, SMBus Supply voltage (Max) (V) 3.6 Supply current (Max) (uA) 2 Temp resolution (Max) (bits) 12 Features ALERT Remote channels (#) 1 Addresses 9 Rating Space
Local sensor accuracy (Max) (+/- C) 2 Type Remote Operating temperature range (C) -55 to 125, 25 to 25 Supply voltage (Min) (V) 1.7 Interface type I2C, SMBus Supply voltage (Max) (V) 3.6 Supply current (Max) (uA) 2 Temp resolution (Max) (bits) 12 Features ALERT Remote channels (#) 1 Addresses 9 Rating Space
CFP (HKU) 10 45 mm² 10 x 10
  • QMLV Qualified: 5962R-1721801VXC
    • Thermally Enhanced HKU Package
    • Radiation-Hardness-Assured (RHA) up to Total Ionizing Dose (TID) 100 krad(Si) at low dose rate (LDR) of 10 mrad/s
    • Single Event Latchup (SEL) Immune to 76 MeV·cm2/mg at 125°C
    • 10-Lead HKU Ceramic Package
  • Remote Diode Temperature Sensor Accuracy: ±1.5°C (Across Extended Temperature Range of [–55°C to 125°C])
  • Local Temperature Sensor Accuracy: ±2°C (Across Extended Temperature Range of [–55°C to 125°C])
  • Enables Measurement Of Remote Diode Temperatures in the Range of –64°C to 191°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
  • QMLV Qualified: 5962R-1721801VXC
    • Thermally Enhanced HKU Package
    • Radiation-Hardness-Assured (RHA) up to Total Ionizing Dose (TID) 100 krad(Si) at low dose rate (LDR) of 10 mrad/s
    • Single Event Latchup (SEL) Immune to 76 MeV·cm2/mg at 125°C
    • 10-Lead HKU Ceramic Package
  • Remote Diode Temperature Sensor Accuracy: ±1.5°C (Across Extended Temperature Range of [–55°C to 125°C])
  • Local Temperature Sensor Accuracy: ±2°C (Across Extended Temperature Range of [–55°C to 125°C])
  • Enables Measurement Of Remote Diode Temperatures in the Range of –64°C to 191°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

The TMP461-SP device is a radiation-hardened, 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, analog-to-digital converters (ADC), digital-to-analog converters (DAC), microcontrollers, or field-programmable gate arrays (FPGA). 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-SP is ideal for multi-location, high-accuracy temperature measurements in a variety of distributed telemetry applications. The integrated local and remote temperature sensors simplify spacecraft housekeeping activities by providing an easy way of measuring temperature gradients. The device is specified for operation over a supply voltage range of 1.7 V to 3.6 V, and a temperature range of –55°C to 125°C.

The TMP461-SP device is a radiation-hardened, 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, analog-to-digital converters (ADC), digital-to-analog converters (DAC), microcontrollers, or field-programmable gate arrays (FPGA). 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-SP is ideal for multi-location, high-accuracy temperature measurements in a variety of distributed telemetry applications. The integrated local and remote temperature sensors simplify spacecraft housekeeping activities by providing an easy way of measuring temperature gradients. The device is specified for operation over a supply voltage range of 1.7 V to 3.6 V, and a temperature range of –55°C to 125°C.

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Technical documentation

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Type Title Date
* Data sheet TMP461-SP Radiation-Hardness-Assured (RHA), High-Accuracy Remote and Local Temperature Sensor datasheet (Rev. B) 19 Feb 2018
* Radiation & reliability report Single-Event Effects Test Report for TMP461-SP High-Accuracy Remote and Local (Rev. B) 04 Jan 2021
* Radiation & reliability report TMP461-SP Total Ionizing Dose (TID) Report (Rev. C) 04 Jan 2021
* Radiation & reliability report TMP461-SP (5962R1721701VXC) Neutron Displacement Damage Characterization 10 Sep 2018
* SMD TMP461-SP SMD 5962-17218 22 Mar 2018
Selection guide TI Space Products (Rev. H) 27 Jan 2021
Technical article Satellite state of health: how space-grade ICs are improving telemetry circuit design 26 Jan 2021
Application note Heavy Ion Orbital Environment Single-Event Effects Estimations 18 May 2020
Technical article How to choose the right thermistor for your temperature sensing application 13 Feb 2020
Application note Single-Event Effects Confidence Interval Calculations 14 Jan 2020
Technical article How to enable thermal safety for automotive infotainment and cluster systems 15 Oct 2019
Technical article Driving industrial innovation with small-size sensors 12 Sep 2019
More literature TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing 17 Jun 2019
E-book Radiation Handbook for Electronics (Rev. A) 21 May 2019
User guide TSW12D1620EVM-CVAL User's Guide (Rev. A) 29 Jan 2019
Application note Measuring Die Temperature with Remote Diode Sensing in Space 10 Dec 2018

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TMP461EVM-CVAL — Radiation Hardness Assured (RHA) High-Accuracy Remote and Local Temperature Sensor Evaluation Module

The TMP461-SP 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 (...)

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Evaluation board

TSW12D1620EVM-CVAL — ADC12D1620QML-SP space-grade wideband receiver evaluation module

The TSW12D1620EVM-CVAL is a 1.5-GHz wideband receiver evaluation module (EVM) that includes ceramic engineering models of the amplifier, analog-to-digital converter (ADC), clocking, temperature sensor, microcontroller, and power solution. The board is best suited for (...)

In stock
Limit: 5
Development kit

ALPHA-XILINX-KU060-SPACE — Alpha Data® board for Xilinx® Kintex® UltraScale™ XQRKU060 FPGA with TI power

This is a development kit for the Xilinx® XQRKU060 FPGA with industrial -1 speed grade. ADA-SDEV-KIT2 has a modular board design with a XRTC-compatible configuration module, two FMC connectors, DDR3 DRAM, system monitoring, and space-grade TI power management and temperature-sensing solutions.
From: Alpha Data Parallel Systems Ltd.
Support software

MSP430FR5969 Firmware

SBAC235.ZIP (6419 KB)
Simulation model

TMP461 and TMP461-SP IBIS MODEL

SLAM269.ZIP (53 KB) - IBIS Model
Reference designs

TIDA-010197 — Versatile satellite health monitoring and control platform reference design with < 1% accuracy

This reference design features a highly modular design for radiation-hardened satellite telemetry systems that utilizes the versatility of LMP7704-SP to accurately monitor temperature, voltage and current to provide feedback to the host board. It also provides controlled analog outputs to provide (...)
Reference designs

TIDA-070004 — Space-grade reference design using integrated digital-output temperature sensor

This reference design illustrates the fact that several spacecraft projects provide a system health status telemetry that ground personnel monitor in real time. This reference design shows an example using a digital output temperature sensor to acquire temperature data on a sub-system using a (...)
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