TMP9R01-SP (QMLP RHA) and TMP9R01-SEP (Radiation Tolerant) Space-Grade, I2C

Digital Temperature Sensor With Remote and Local (On-Chip) Temperature Sensing

1 Features

• QMLP, Radiation Hardness Assured (RHA)

– SMD 5962-17218:

– TID characterized up to 100krad(Si)

– TID RLAT/RHA to 100krad(Si)

– SEL immune to LET= 75MeV×cm2/mg at 125°C

– SEE characterized to LET= 75MeV×cm2/mg

– SEFI characterized to LET= 75MeV×cm2/mg

– QMLV version available: TMP461-SP

• Radiation Tolerant (Space Enhanced Plastic)

– Vendor item drawing (VID) V62/24615

– TID characterized up to 50krad(Si)

– TID RLAT/RHA to 30krad(Si)

– SEL immune to LET= 43MeV×cm2/mg at 125°C

– SEE characterized to LET= 43MeV×cm2/mg

– SEFI characterized to LET= 43MeV×cm2/mg

• Temperature accuracy and range:

– 12-bit resolution: 0.0625°C (LSB)

– Local (on-chip) temp accuracy: ±2.0°C (Max)

– Remote junction temp accuracy: ±1.5°C (Max)

– Remote range tested to: –64°C to 191°C

– Military temperature range: -55 to 125°C

• Small-size package: VSSOP-10, 4.9mm × 3.0mm

• Integrated calibration/ protection features:

– η-factor and offset correction

– Series resistance cancellation

– Remote BJT/diode fault detection

– Programmable digital filter

• Wide operating range, low power:

– Voltage supply range: 1.7V to 3.6V

– I/O voltages: 1.8V, 2.5V, and 3.3V

– Standby/shutdown IQ: 15μA/3μA

2 Applications

• Space-grade FPGA, ADCs, DACs, and ASIC

integrated junction temperature sensing

• Communications payload

• Radar imaging payload

• Optical imaging payload

• On-board computer (OBC)

• Command & data handling (C&DH)

3 Description

The TMP9R01-SP (QML Class P) and TMP9R01-

SEP (Radiation Tolerant, Space EP) are high-

accuracy digital I2C temperature sensors integrating

a 12-bit ADC, bias current sources, and calibration

circuitry in a 10-pin VSSOP plastic package. The

devices measure remote temperature by forcing a

bias current through an external BJT or the integrated

diode/junction of an FPGA, ADC, or ASIC, digitizing

the resulting ΔVBE and reporting temperature with

0.0625°C resolution. An additional on-chip sensor

provides local temperature measurement.

The TMP9R01-SP and TMP9R01-SEP incorporate

multiple calibration and protection features, including

series-resistance cancellation, programmable non-

ideality factor (η-Factor), offset correction, and

programmable digital filter. Designers can set high-

and low-temperature limits that drive the ALERT

output

for

over-and-under

temperature

thermal

protection.

Up

to

9

pin-selectable

I2C/SMBus

addresses allow multiple sensors on the same I2C

bus. The devices are designed for multi-location

spacecraft housekeeping, satellite telemetry, avionics,

and other high-reliability applications that require

precise, temperature sensing and with varying levels

of radiation hardness.

The TMP9R01-SP is also available as a functionally

equivalent QMLV-RHA device: TMP461-SP.

Table 3-1. Package Information

DEVICE

Grade

PACKAGE(2)

5962R1721802PYE

QMLP RHA

24-pin plastic

4.9mm × 3.0mm

Mass = 99mg

TMP9R01DGS/EM(1)

Engineering Sample

TMP9R01MDGSTSEP

Rad Tolerant

(1)

Units intended only for engineering evaluation

(2)

The mass is a nominal value and the body size (length ×

width) is a nominal value and include pins.

OSC

SCL

V+

GND

TMP9R01

ADC

Digital

Core

THERM

On-Chip (Local)

BJT

Register

Bank

I2C

Interface

SDA

A1

BJT Bias

Currents

D+

D-

FPGA/ASIC/ADC/DAC

with Integrated

Thermal Junction

-- or –

Discrete BJT

A0

ALERT/

THERM2

°C

°C

N1×I N2×I I

Functional Block Diagram

TMP9R01-SEP, TMP9R01-SP

SNIS238A – JULY 2025 – REVISED JULY 2026

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.