SCL

V+

D+

D±

GND

A0

SMBus

Controller

Host Processor

A1

Overtemperature

Shutdown

SDA

GND

GND

1.7 V to 3.6 V

1.7 V to 3.6 V

GND

Built-in

Thermal

Transistor

or Diode

FPGA, ADC,

DAC, or ASIC

THERM

ALERT/

THERM2

TMP461-SP

1

2

3

4

5

6

7

8

9

10

Copyright © 2017, Texas Instruments Incorporated

TL1431-SP

or

LM4050QML-SP

TL1431-SP

or

LM4050QML-SP

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

TMP461-SP

SBOS876A – SEPTEMBER 2017 – REVISED DECEMBER 2017

TMP461-SP Radiation Hardened Remote and Local Digital Temperature Sensor

1

1 Features

1

•

QMLV Qualified: 5962-1721801VXC

–

Thermally Enhanced HKU Package

–

Tested up to Total Ionizing Dose (TID) 50

krad(Si) at high dose rate (HDR) of 50 rad/s

–

Tested 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

–

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

2 Applications

•

Spacecraft FPGA, ADC's, DAC's, and ASIC

Temperature Monitoring

•

Spacecraft Housekeeping and Telemetry

Simplified Block Diagram

3 Description

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.

Device Information(1)

PART NUMBER

GRADE

PACKAGE

5962-1721801VXC

QMLV

10-lead CFP [HKU]

7.02 mm × 6.86 mm

Engineering

Samples

10-lead CFP [HKU]

7.02 mm × 6.86 mm

TMP461EVM-CVAL

Ceramic Evaluation

Board

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

(2) These units are intended for engineering evaluation only.

They are processed to a noncompliant flow. These units are

not suitable for qualification, production, radiation testing or

flight use. Parts are not warrantied for performance over the

full MIL specified temperature range of –55°C to 125°C or

operating life.