SBOS821 November   2016 TMP421-Q1 , TMP422-Q1 , TMP423-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 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 Timing Requirements
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Temperature Measurement Data
      2. 8.3.2 Remote Sensing
      3. 8.3.3 Series Resistance Cancellation
      4. 8.3.4 Differential Input Capacitance
      5. 8.3.5 Filtering
      6. 8.3.6 Sensor Fault
      7. 8.3.7 Undervoltage Lockout
      8. 8.3.8 Timeout Function
    4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode (SD)
    5. 8.5 Programming
      1. 8.5.1  Serial Interface
      2. 8.5.2  Bus Overview
      3. 8.5.3  Bus Definitions
      4. 8.5.4  Serial Bus Address
      5. 8.5.5  Two-Wire Interface Slave Device Addresses
      6. 8.5.6  Read and Write Operations
      7. 8.5.7  High-Speed Mode
      8. 8.5.8  One-Shot Conversion
      9. 8.5.9  η-Factor Correction Register
      10. 8.5.10 Software Reset
      11. 8.5.11 General Call Reset
      12. 8.5.12 Identification Registers
    6. 8.6 Register Maps
      1. 8.6.1 Pointer Register
      2. 8.6.2 Temperature Registers
      3. 8.6.3 Status Register
      4. 8.6.4 Configuration Register 1
      5. 8.6.5 Configuration Register 2
      6. 8.6.6 Conversion Rate Register
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 TMP421-Q1 Basic Connections
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curve
      2. 9.2.2 TMP422-Q1 Basic Connections
      3. 9.2.3 TMP423-Q1 Basic Connections
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 Measurement Accuracy and Thermal Considerations
  12. 12Device and Documentation Support
    1. 12.1 Related Links
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

6 Pin Configuration and Functions

TMP421-Q1 DCN Package
8-Pin SOT-23
Top View
TMP421-Q1 TMP422-Q1 TMP423-Q1 po_tmp421_bos398.gif

TMP421-Q1 Pin Functions

PIN TYPE DESCRIPTION
NO. NAME
1 DXP Analog input Positive connection to remote temperature sensor
2 DXN Analog input Negative connection to remote temperature sensor
3 A1 Digital input Address pin
4 A0 Digital input Address pin
5 GND Ground Ground
6 SDA Bidirectional digital input-output Serial data line for SMBus, open-drain; requires pullup resistor to V+
7 SCL Digital input Serial clock line for SMBus, open-drain; requires pullup resistor to V+
8 V+ Power supply Positive supply voltage (2.7 V to 5.5 V for the TMP421-Q1)
TMP422-Q1 DCN Package
8-Pin SOT-23
Top View
TMP421-Q1 TMP422-Q1 TMP423-Q1 po_tmp422_bos398.gif

TMP422-Q1 Pin Functions

PIN TYPE DESCRIPTION
NO. NAME
1 DX1 Analog input Channel 1 remote temperature sensor connection pin.
Also sets the TMP422-Q1 address; see Table 4.
2 DX2 Analog input Channel 1 remote temperature sensor connection pin.
Also sets the TMP422-Q1 address; see Table 4.
3 DX3 Analog input Channel 2 remote temperature sensor connection pin.
Also sets the TMP422-Q1 address; see Table 4.
4 DX4 Analog input Channel 2 remote temperature sensor connection pin.
Also sets the TMP422-Q1 address; see Table 4.
5 GND Ground Ground
6 SDA Bidirectional digital input-output Serial data line for SMBus, open-drain; requires pullup resistor to V+.
7 SCL Digital input Serial clock line for SMBus, open-drain; requires pullup resistor to V+.
8 V+ Power supply Positive supply voltage (2.7 V to 5.5 V).
TMP423-Q1 DCN Package
8-Pin SOT-23
Top View
TMP421-Q1 TMP422-Q1 TMP423-Q1 po_tmp423_bos398.gif

TMP423-Q1 Pin Functions

PIN TYPE DESCRIPTION
NO. NAME
1 DXP1 Analog input Channel 1 positive connection to remote temperature sensor
2 DXP2 Analog input Channel 2 positive connection to remote temperature sensor
3 DXP3 Analog input Channel 3 positive connection to remote temperature sensor
4 DXN Analog input Common negative connection to remote temperature sensors, channel 1, channel 2, and channel 3
5 GND Ground Ground
6 SDA Bidirectional digital input-output Serial data line for SMBus, open-drain; requires pullup resistor to V+
7 SCL Digital input Serial clock line for SMBus, open-drain; requires pullup resistor to V+
8 V+ Power supply Positive supply voltage (2.7 V to 5.5 V)