TMP112 datasheet(34/46 Pages) TI2

34 / 46 page

Time (s)

-1

10 11 12

100

110

DRL package

DPW package

Figure 8-6. TMP112-Q1/TMP112D-Q1 Temperature Step Response

8.3 Power Supply Recommendations

The TMP112-Q1/TMP112D-Q1 device operates with power supply in the range of 1.4V to 3.6V. The device is

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

TMP112-Q1 only, refer to the Power Supply-Level Contribution to Accuracy section for more information about

the power supply impact on the accuracy of the device.

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.

8.4 Layout

8.4.1 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 and ALERT) through

5kΩ pullup resistors.

8.4.2 Layout Example

There are special considerations that need to be taken for the TMP112D-Q1 X2SON package. These

considerations are due to the center pad being electrically connected address pin and because of the

dimensions of the package and the pads. With the address option, the center pad can be directly connected

with a trace on the same layer to one of the 4 edge pins for setting the device address as shown in Figure 8-7.

TMP112-Q1, TMP112D-Q1

SLOS887G – SEPTEMBER 2014 – REVISED MAY 2025

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Product Folder Links: TMP112-Q1 TMP112D-Q1

TMP112 Datasheet(PDF) 34 Page - Texas Instruments