Serial Bus Traces

Pull-Up Resistors

Supply Bypass

Capacitor

Via to Power or Ground Plane

Via to Internal Layer

Supply Voltage

SCL

GND

ADD1

V+

SDA

Ground Plane for

Thermal Coupling

to Heat Source

Heat Source

ADD0

21

TMP100-Q1, TMP101-Q1

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SBOS581A – SEPTEMBER 2011 – REVISED MAY 2017

Product Folder Links: TMP100-Q1 TMP101-Q1

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Copyright © 2011–2017, Texas Instruments Incorporated

10 Power Supply Recommendations

The TMP100-Q1 and TMP101-Q1 devices operate with power supply in the range of 2.7 V to 5.5 V. A power-

supply bypass capacitor is required for stability; 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 can require additional decoupling capacitors to reject power-supply noise.

11 Layout

11.1 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 0.01 μF. 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 (TMP101-

Q1) through 5-kΩ pullup resistors.

11.2 Layout Examples

Figure 15. TMP100-Q1 Layout Example