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Figure 8-4. Temperature Step Response

8.2.4 Power Supply Recommendations

The TMP112 family operates with power supply in the range of 1.4 to 3.6 V. The device is optimized for operation

at 3.3-V supply but can measure temperature accurately in the full supply range.

A power-supply bypass capacitor is required for proper operation. Place this capacitor as close as possible to

the supply and ground pins of the device. A typical value for this supply bypass capacitor is 0.01μF. Applications

with noisy or high-impedance power supplies can require additional decoupling capacitors to reject power-supply

noise.

8.3 Layout

8.3.1 Layout Guidelines

Place the power-supply bypass capacitor as close as possible to the supply and ground pins. The recommended

value of this bypass capacitor is 0.01μF. Additional decoupling capacitance can be added to compensate

for noisy or high-impedance power supplies. Pull up the open-drain output pins (SDA, SCL) through 5kΩ

pullup resistors. However, using a minimal SDA and ALERT pins pull-up current is recommended to prevent

self-heating and temperature accuracy reduction.

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TMP112, TMP112D

SBOS473L – MARCH 2009 – REVISED JULY 2024

Copyright © 2024 Texas Instruments Incorporated

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Product Folder Links: TMP112 TMP112D