TMP9R01DGSSLASHEM datasheet(34/45 Pages) TI2

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depends on the printed-circuit board (PCB) size that the device is mounted. For this test, the device is soldered

to a two-layer PCB that measures 0.5 inches × 0.5 inches.

Time (s)

-1 0

9 10 11 12 13 14

100

125

Local

Remote

Local: soldered devices on 62mil 2-layer FR4 PCB

Remote: characterized with 2N3906 PNP transistor

Figure 9-3. Temperature Step Response

9.3 Radiation Environments

Careful consideration must be given to environmental conditions when using a product in a radiation

environment.

Note

During the exposure time, all I2C registers can be continuously read. However, resetting the

TMP9R01-SEP and TMP9R01-SP devices before every read is recommended. Without resetting the

device, there is a chance the device performs not as accurate as expected.

9.3.1 Single Event Latch-Up

One-time single event latch-up (SEL) testing is preformed according to EIA/JEDEC Standard, EIA/JEDEC57.

The linear energy transfer threshold (LETth) shown in Features is the maximum LET tested. A test report

is available in the TMP9R01-SEP Single-Event Effects (SEE) Radiation Test Report and TMP9R01-SP Single-

Event Effects (SEE) Radiation Test Report.

9.3.2 Single Event Functional Interrupt

To mitigate the effects of single-event upsets and single-event functional interrupts, write the appropriate value

to the pointer register each time a read operation is performed. Relying on the last value stored in the pointer

If other functions are being used, such as the temperature limit register, occasionally rewriting to these registers

can be necessary.

9.3.3 Single Event Upset

A report on single event upset (SEU) is available in the TMP9R01-SEP Single-Event Effects (SEE) Radiation

Test Report.

9.4 Power Supply Recommendations

The TMP9R01-SEP and TMP9R01-SP devices operate with a power-supply range of 1.7V to 3.6V. The device is

optimized for operation at a 3.3V supply but can measure temperature accurately in the full supply range.

TMP9R01-SEP, TMP9R01-SP

SNIS238A – JULY 2025 – REVISED JULY 2026

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TMP9R01DGS/EM Datasheet(PDF) 34 Page - Texas Instruments