SBOSA41A May   2023  – September 2023 TMP4718

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Device Comparison
  7. 6 Pin Configuration and Functions
  8. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 I2C Interface Timing
    7. 7.7 Timing Diagrams
    8. 7.8 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 1.2-V Logic Compatible Inputs
      2. 8.3.2 Series Resistance Cancellation
      3. 8.3.3 Device Initialization, Resistor Decoding, and Default Temperature Conversion
      4. 8.3.4 Adjustable Default T_CRIT High-Temperature Limit
      5. 8.3.5 ALERT and T_CRIT Output
      6. 8.3.6 Fault Queue
      7. 8.3.7 Filtering
      8. 8.3.8 One-Shot Conversions
    4. 8.4 Device Functional Modes
      1. 8.4.1 Interrupt and Comparator Mode
        1. 8.4.1.1 Interrupt Mode
        2. 8.4.1.2 Comparator Mode
        3. 8.4.1.3 T_CRIT Output
      2. 8.4.2 Shutdown Mode
      3. 8.4.3 Continuous Conversion Mode
    5. 8.5 Programming
      1. 8.5.1 Temperature Data Format
      2. 8.5.2 I2C and SMBus Interface
      3. 8.5.3 Device Address
      4. 8.5.4 Bus Transactions
        1. 8.5.4.1 Writes
        2. 8.5.4.2 Reads
      5. 8.5.5 SMBus Alert Mode
    6. 8.6 Register Map
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  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. 11Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.5 Electrical Characteristics

Over free-air temperature range and VDD = 1.62 V to 5.5 V (unless otherwise noted); Typical specifications are at TA = 25 °C and VDD = 3.3 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
TEMPERATURE SENSOR
TERR_L Local temperature accuracy TA = –40°C to 125°C –1 1 °C
TERR_R Remote temperature accuracy
(Optimized for MMBT3904 NPN Transistor)		 TD = –10°C to 85°C, TA = –10°C to 85°C –0.8 0.8 °C
TD = –55°C to 125°C TA = –10°C to 85°C –1.0 1.0 °C
TA = –40°C to 125°C –1.5 1.5 °C
PSR Supply Sensitivity on accuracy Remote temperature sensor, one-shot mode, VDD = 1.62 V to 5.5 V 0.1 °C/V
TRES_L Temperature resolution (local) Including sign bit 8 Bits
LSB 1 °C
TRES_R Temperature resolution (remote) Including sign bit 11 Bits
LSB 0.125 °C
TREPEAT Repeatability(1) VDD = 3.3 V,1-Hz conversion cycle, no averaging 1 LSB
tRT Response time (Stirred Liquid, mounted on 2-layer 62-mil PCB) τ = 63%
25°C to 75°C		 Local temperature sensor 1.5 s
τ = 63%
25°C to75 °C		 Remote temperature sensor (MMBT3904 NPN Transistor) 0.5 s
VFMAX Maximum supported forward diode voltage 1.1 V
RSERIES Maximum supported series resistance on remote channel 1000 Ω
tCONV Conversion time Local conversion only, one-shot mode 16 17.7 19.4 ms
Remote conversion + local conversion, one-shot mode 32 34.3 37 ms
tVAR Timing variation  Conversion period –10 10 %
DIGITAL INPUT/OUTPUT
CIN Input capacitance ALERT, T_CRIT, SCL, SDA f = 100 kHz 5 pF
CI/O ALERT and T_CRIT pin capacitance for resistor detection 1 nF
RTOL ALERT and T_CRIT pullup resistor tolerance requirement –1 1 %
VIH Input logic high level SCL, SDA 0.9 V
VIL Input logic low level SCL, SDA 0.4 V
ILI Input leakage current ALERT, T_CRIT, SCL, SDA –0.1 0.1 μA
ILO Output leakage current ALERT, T_CRIT, SDA –0.1 0.1 μA
VOL Output low level ALERT, T_CRIT, SDA, IOL = 3 mA 0.4 V
POWER SUPPLY
IDD_ACTIVE Active conversion current TA = –40°C to 125°C
Serial bus inactive		 Local sensor 100 150 μA
Remote sensor 220 320 μA
IDD_AVG Average current consumption Serial bus inactive, continuous conversion Conversion period = 2 s 4.5 μA
Conversion period = 0.125 s 45 μA
IDD_SB Standby current(2) Serial bus inactive TA = 25°C 1 1.5 μA
TA = –40°C to 125°C 5.5 μA
IDD_SD Shutdown current Serial bus inactive TA = 25°C 0.5 0.8 μA
TA = –40°C to 125°C 5 μA
Serial bus active. fs = 400 kHz 6.9 μA
Serial bus active. fs = 1 MHz 15.2 μA
VPOR Power-on reset threshold voltage Supply rising 1.2 1.4 V
Brownout detect Supply falling 1.0 1.1 V
tPOR Device initialization time(3) 35 ms
(1) Repeatability is the ability to reproduce a reading when the measured temperature is applied consecutively, under the same conditions.
(2) Quiescent current between conversions in continuous conversion mode