SBOS721A October   2014  – June 2022 TMP75B-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Digital Temperature Output
      2. 7.3.2 Temperature Limits and Alert
      3. 7.3.3 Serial Interface
        1. 7.3.3.1  Bus Overview
        2. 7.3.3.2  Serial Bus Address
        3. 7.3.3.3  Writing and Reading Operation
        4. 7.3.3.4  Target-Mode Operations
          1. 7.3.3.4.1 Target Receiver Mode:
          2. 7.3.3.4.2 Target Transmitter Mode:
        5. 7.3.3.5  SMBus Alert Function
        6. 7.3.3.6  General Call
        7. 7.3.3.7  High-Speed (Hs) Mode
        8. 7.3.3.8  Timeout Function
        9. 7.3.3.9  Two-Wire Timing
        10. 7.3.3.10 Two-Wire Timing Diagrams
    4. 7.4 Device Functional Modes
      1. 7.4.1 Continuous-Conversion Mode
      2. 7.4.2 Shutdown Mode
      3. 7.4.3 One-Shot Mode
    5. 7.5 Programming
    6. 7.6 Register Map
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
  9. 9 Power-Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Trademarks
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.4.1 Continuous-Conversion Mode

The default mode of the TMP75B-Q1 is continuous conversion, where the ADC performs continuous temperature conversions and stores each result to the temperature register, overwriting the result from the previous conversion. Conversion rate bits CR1 and CR0 in the configuration register configure the TMP75B-Q1 for typical conversion rates of 37 Hz, 18 Hz, 9 Hz, or 4 Hz. The TMP75B-Q1 has a typical conversion time of 27 ms. To achieve different conversion rates, the TMP75B-Q1 makes a conversion, and then powers down and waits for the appropriate delay set by CR1 and CR0. The default rate is 37 Hz (no delay between conversions).Table 7-4 shows the settings for CR1 and CR0.

Table 7-4 Conversion Rate Settings
CR1CR0CONVERSION RATE (TYP)IQ (TYP)
0037 Hz (continuous conversion, default)45 μA
0118 Hz22 μA
109 Hz12 μA
114 Hz6.5 μA

After power-up or a general-call reset, the TMP75B-Q1 immediately starts a conversion, as shown in Figure 7-6. The first result is available after 27 ms (typical). The active quiescent current during conversion is 45 μA (typical at 25°C). The quiescent current during delay is 1 μA (typical at 25°C).

GUID-3F603741-7AEF-4716-A65C-D2A75FA349F0-low.gif
A. Delay is set by the CR bits in the configuration register.
Figure 7-6 Conversion Start