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  • TMP118 Ultra-small, High-Accuracy, Low-power, Digital Temperature Sensor With SMBus™- and I2C-compatible Interface

    • SNIS237 December   2024 TMP118

      PRODUCTION DATA  

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  • TMP118 Ultra-small, High-Accuracy, Low-power, Digital Temperature Sensor With SMBus™- and I2C-compatible Interface
  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Two-Wire Interface Timing
    7. 6.7 Timing Diagram
    8. 6.8 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 Digital Temperature Output
      2. 7.3.2 Averaging
      3. 7.3.3 Temperature Comparator and Hysteresis
      4. 7.3.4 Strain Tolerance
      5. 7.3.5 NIST Traceability
    4. 7.4 Device Functional Modes
      1. 7.4.1 Continuous Conversion Mode
      2. 7.4.2 One-Shot Mode (OS)
    5. 7.5 Programming
      1. 7.5.1 I2C and SMBus Interface
        1. 7.5.1.1 Serial Interface
          1. 7.5.1.1.1 Bus Overview
          2. 7.5.1.1.2 Device Address
          3. 7.5.1.1.3 Writing and Reading Operation
            1. 7.5.1.1.3.1 Writes
            2. 7.5.1.1.3.2 Reads
          4. 7.5.1.1.4 General-Call Reset Function
          5. 7.5.1.1.5 Timeout Function
          6. 7.5.1.1.6 Coexistence on I3C Mixed Bus
  9. 8 Register Map
    1. 8.1 Temp_Result Register (address = 00h) [reset = 0000h]
    2. 8.2 Configuration Register (address = 01h) [reset = 60B0h]
    3. 8.3 TLow_Limit Register (address = 02h) [reset = 2580h]
    4. 8.4 THigh_Limit Register (address = 03h) [reset = 2800h]
    5. 8.5 Device ID Register (Address = 0Bh) [reset = 118xh]
    6. 8.6 Unique_ID0 Register (Address = 0Ch) [reset = xxxxh]
    7. 8.7 Unique_ID1 Register (Address = 0Dh) [reset = xxxxh]
    8. 8.8 Unique_ID2 Register (Address = 0Eh) [reset = xxxxh]
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Separate I2C Pullup and Supply Application
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
      2. 9.2.2 Equal I2C Pullup and Supply Voltage Application
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Examples
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information
  14. IMPORTANT NOTICE

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • YMS|4
Thermal pad, mechanical data (Package|Pins)
Orderable Information
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Data Sheet

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

TMP118 TMP118 Temperature Accuracy (1.8V supply)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.
TMP118 Simplified Schematic Figure 3-1 Simplified Schematic

4 Device Comparison

Table 4-1 Device Address Options
7-BIT I2C TARGET ADDRESS

DEVICE

HEX

BINARY

TMP118A/ TMP118MA

0x48

1001000'b

TMP118B/ TMP118MB

0x49

1001001'b

TMP118C/ TMP118MC

0x4A

1001010'b

TMP118D/ TMP118MC

0x4B

1001011'b

Table 4-2 Device Options
Feature TMP113 TMP114 TMP117 TMP117M TMP117N TMP118 TMP118M TMP119
VDD (V) 1.4 - 5.5 1.08 - 1.98 1.7 - 5.5 1.7 - 5.5 1.7 - 5.5 1.4 - 5.5 1.4 - 5.5 1.7 - 5.5

Current Consumption (25°C)
IAVG @ 1Hz (μA) 1.4 0.63 3.5 3.5 3.5 1.4 1.4 3.5
IQ_ACTIVE (μA)

55

 68

135

135

135

55

55

135
ISB (μA) 0.85 0.26 1.25 1.25 1.25 0.75 0.75 1.25

ISD (μA)

0.07

0.16

0.25

0.25

0.25

0.08

0.08

0.25

Accuracy
0°C to 45°C

(typ)

0.1

 0.1

0.05

0.05

0.1

0.05

0.05

0.03

(max)

0.3

0.2

0.1

0.1

0.2

0.1

0.1

0.08
-55°C (max) -

-

0.25

-

0.3

-

-

0.15
-40°C (max)

0.75

0.5

0.15

-

0.2

0.5

-

0.11
-20°C (max)

0.5

0.5

0.1

-

0.2

0.2

-

0.09
-10°C (max)

0.5

0.3

0.1

-

0.2

0.2

-

0.09
0°C (max)

0.3

0.3

0.1

0.15

0.2

0.1

0.2

0.08
20°C (max)

0.3

0.2

0.1

0.1

0.2

0.1

0.1

0.08
45°C (max)

0.3

0.2

0.1

0.1

0.2

0.1

0.1

0.08
60°C (max)

0.3

0.3

0.15

0.15

0.2

0.2

0.2

0.09
85°C (max)

0.5

0.5

0.2

0.2

0.2

0.2

0.2

0.15
100°C (max)

0.75

0.5

0.2

-

0.2

0.5

-

0.15
125°C (max)

0.75

0.5

0.25

-

0.25

0.5

-

0.2
150°C (max) -

-

0.3

-

0.3

-

-

0.2

Packaging
Dimensions [mm × mm × mm] BGA: 1.49 × 0.95 × 0.531

PICOSTAR: 0.76 × 0.76 × 0.15

BGA: 1.49 × 0.95 × 0.531

WSON: 2.0 × 2.0 × 0.8

 PICOSTAR: 0.61 × 0.55 × 0.24

BGA: 1.49 × 0.95 × 0.525

Features

I2C Addresses

 ADD0 Pin (4)

Factory Set (4)

 ADD0 Pin (4) Factory Set (4) ADD0 Pin (4)

NIST Traceable

Yes

No

Yes

Yes

Yes

Yes

Yes

Yes

 
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