Via to Power and Ground Plane

Via to other signal layers

Supply Voltage

SCL

V

+

SDA

GND

TMP103A

TMP103B

TMP103H

SCL

V

+

SDA

GND

SCL

V

+

SDA

GND

21

TMP103

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SBOS545D – FEBRUARY 2011 – REVISED DECEMBER 2018

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9 Power Supply Recommendations

The TMP103 device operates with power supply in the range of 1.4 V 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 0.01 μF. Applications with noisy or

high-impedance power supplies may require additional decoupling capacitors to reject power-supply noise.

10 Layout

10.1 Layout Guidelines

Place the power-supply bypass capacitor as close as possible to the supply pin. The recommended value of this

bypass capacitor is 0.01 μF. Additional decoupling capacitance can be added to compensate for noisy or high-

impedance power supplies. Pull up the SDA and SCL pins through 5-kΩ pullup resistors.

10.2 Layout Example

Figure 18. Recommended Layout Example