TMP118 Ultra-small, High-Accuracy, Low-power, Digital Temperature Sensor

With SMBus™- and I2C-compatible Interface

1 Features

• Ultra-small, ultra-thin PicoStar™ package:

– Size: 0.55 × 0.61 × 0.24mm

– Small thermal mass: 0.14mJ/°C

• TMP118 high-accuracy temperature sensor:

– ±0.05°C (typical) from 0°C to 50°C

– ±0.1°C (maximum) from 0°C to 50°C

– ±0.2 °C (maximum) from –20°C to 85°C

– ±0.4 °C (maximum) from –40°C to 125°C

• Low power consumption:

– 55μA active current

– 80nA shutdown current

– 1.4μA average current, 1Hz conversion cycle

• Supply range: 1.4V to 5.5V

• 1.2V logic compatible (independent of supply)

• 3 averaging options to reduce measurement noise

• 16-bit resolution: 0.0078125°C (LSB)

• I2C and SMBus compatible

• I3C Mixed Bus co-existence capable

• Programmable temperature alert limits

• NIST traceability with unique device IDs

2 Applications

• Mobile Phones

• Smartwatch

• Smart Trackers

• Tablets

• Medical Sensor Patches

Te mperature (

C)

-40

-25

-10

5

20

35

50

65

80

95

110 125

-500

-400

-300

-200

-100

0

100

200

300

400

500

Average

3

TMP118 Min/Max

TMP118 Temperature Accuracy (1.8V supply)

3 Description

The TMP118 is the industry smallest temperature

sensor in an industry leading 0.55mm × 0.61mm ×

0.24mm PICOSTAR package. The TMP118 provides

a 16-bit temperature result with a resolution of

0.0078125°C and an accuracy of up to ±0.1°C

across the temperature range of 0°C to 50°C with

no additional calibration. The device is designed to

help meet the system level ASTM E1112 and ISO

80601 accuracy requirements for electronic patient

thermometers.

The TMP118 is designed to operate from a supply

voltage as low as 1.4V, with a low average and

shutdown current of 1.4µA (at 1Hz, no averaging)

and 80nA, respectively, allowing for an on-demand

temperature conversion to maximize battery life. The

TMP118 has an interface that is I2C- and SMBus-

compatible and has programmable alert functionality.

Logic level as low as 1V can be supported regardless

of the main supply rail, enabling interoperability with

a low voltage 1.2V controller without an additional

voltage level shifter.

The device offers unique IDs for improved traceability.

The TMP118 units are 100% tested on a production

setup that is NIST traceable and verified with

equipment that is calibrated to ISO/IEC 17025

accredited standards.

Package Information

PART NUMBER(1)

PACKAGE

PACKAGE SIZE(2)

TMP118

PICOSTAR

(4)

0.55mm × 0.61mm ×

0.24mm

(1)

For more information, see Section 12.

(2)

The package size (length × width) is a nominal value and

includes pins, where applicable.

VDD

SCL

SDA

GND

10nF

1.2V to 5.5V

5k

5k

SDA

SCL

1.4V to 5.5V

TMP118

Controller

Figure 3-1. Simplified Schematic

TMP118

SNIS237 – DECEMBER 2024

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.