SLASF96 April   2024 AFE20408

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Switching Characteristics
    8. 5.8 Timing Diagrams
    9. 5.9 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Digital-to-Analog Converter (DAC) Overview
        1. 6.3.1.1 DAC Resistor String
        2. 6.3.1.2 DAC Register Structure
          1. 6.3.1.2.1 DAC Synchronous Operation
        3. 6.3.1.3 DAC Buffer Amplifier
          1. 6.3.1.3.1 Autorange Detection
          2. 6.3.1.3.2 Power-Supply Monitoring
      2. 6.3.2 Analog-to-Digital Converter (ADC)
        1. 6.3.2.1 Versatile High-Voltage Measurement Capability
        2. 6.3.2.2 High-Precision Delta-Sigma ADC
          1. 6.3.2.2.1 ADC Custom Channel Sequencer
        3. 6.3.2.3 Low Latency Digital Filter
        4. 6.3.2.4 Flexible Conversion Times and Averaging
        5. 6.3.2.5 Integrated Precision Oscillator
      3. 6.3.3 Output Switch Overview
      4. 6.3.4 Drain Switch Control
      5. 6.3.5 FLEXIO Pin
      6. 6.3.6 Internal Temperature Sensor
      7. 6.3.7 Programmable Out-of-Range Alarms
        1. 6.3.7.1 Temperature Sensor Alarm Function
        2. 6.3.7.2 Supply Out-of-Range Alarm Function
        3. 6.3.7.3 ADC Alarm Function
    4. 6.4 Device Functional Modes
      1. 6.4.1 All-Positive DAC Range Mode
      2. 6.4.2 All-Negative DAC Range Mode
      3. 6.4.3 Mixed DAC Range Mode
    5. 6.5 Programming
      1. 6.5.1 I2C Serial Interface
        1. 6.5.1.1 I2C Bus Overview
        2. 6.5.1.2 I2C Bus Definitions
        3. 6.5.1.3 I2C Target Address Selection
        4. 6.5.1.4 I2C Read and Write Operations
        5. 6.5.1.5 I2C Timeout Function
        6. 6.5.1.6 I2C General-Call Reset
      2. 6.5.2 Serial Peripheral Interface (SPI)
        1. 6.5.2.1 SPI Bus Overview
  8. 7 Register Maps
    1. 7.1 Global Register Map
      1. 7.1.1 Global Registers: Global Page
        1. 7.1.1.1  NOP_RESET Register (address = 00h) [reset = 0000h]
        2. 7.1.1.2  PAGE Register (address = 01h) [reset = 0000h]
        3. 7.1.1.3  GEN_STATUS Register (address = 03h) [reset = 4000h]
        4. 7.1.1.4  ALARM_STATUS_0 Register (address = 04h) [reset = 0000h]
        5. 7.1.1.5  ALARM_STATUS_1 Register (address = 05h) [reset = 0000h]
        6. 7.1.1.6  PWR_STATUS_0 Register (address = 06h) [reset = 0001h]
        7. 7.1.1.7  PWR_STATUS_1 Register (address = 07h) [reset = 0000h]
        8. 7.1.1.8  PWR_EN Register (address = 08h) [reset = 0200h]
        9. 7.1.1.9  TRIGGER Register (address = 10h) [reset = 0000h]
        10. 7.1.1.10 GPIO_DATA Register (address = 11h) [reset = 0001h]
        11. 7.1.1.11 DRVEN_SW_EN Register (address = 12h) [reset = 00FFh]
        12. 7.1.1.12 DRVEN Register (address = 13h) [reset = 0000h]
        13. 7.1.1.13 DAC_BCAST Register (address = 14h) [reset = 0000h]
        14. 7.1.1.14 GLOBAL_CFG Register (address = 17h) [reset = 0000h]
        15. 7.1.1.15 ADC_SENSE0 Register (address = 18h) [reset = 0000h]
        16. 7.1.1.16 ADC_SENSE1 Register (address = 19h) [reset = 0000h]
        17. 7.1.1.17 ADC_ADC0 Register (address = 1Ah) [reset = 0000h]
        18. 7.1.1.18 ADC_ADC1 Register (address = 1Bh) [reset = 0000h]
        19. 7.1.1.19 ADC_TMP Register (address = 1Ch) [reset = 0000h]
    2. 7.2 General Configuration Register Map
      1. 7.2.1 General Configuration Registers: Page 0
        1. 7.2.1.1  CHIP_ID Register (address = 40h) [reset = 2480h]
        2. 7.2.1.2  CHIP_VER Register (address = 41h) [reset = 0000h]
        3. 7.2.1.3  SDO_EN Register (address = 42h) [reset = 0000h]
        4. 7.2.1.4  GEN_CFG_0 Register (address = 44h) [reset = 0010h]
        5. 7.2.1.5  GEN_CFG_1 Register (address = 45h) [reset = 1101h]
        6. 7.2.1.6  ALARMOUT_SRC_0 Register (address = 48h) [reset = 0000h]
        7. 7.2.1.7  ALARMOUT_SRC_1 Register (address = 49h) [reset = 1833h]
        8. 7.2.1.8  ALARM_STATUS_0_BYP Register (address = 4Ch) [reset = 0000h]
        9. 7.2.1.9  ALARM_STATUS_1_BYP Register (address = 4Dh) [reset = 0000h]
        10. 7.2.1.10 PAON_SRC_0 Register (address = 50h) [reset = 0000h]
        11. 7.2.1.11 PAON_SRC_1 Register (address = 51h) [reset = 1833h]
        12. 7.2.1.12 RESET_FLAGS Register (Offset = 70h) [Reset = 000Fh]
    3. 7.3 ADC Configuration Register Map
      1. 7.3.1 ADC Configuration Registers: Page 1
        1. 7.3.1.1  ADC_GEN_CFG Register (address = 40h) [reset = 3334h]
        2. 7.3.1.2  ADC_CONV_CFG_0 Register (address = 41h) [reset = 0555h]
        3. 7.3.1.3  ADC_CONV_CFG_1 Register (address = 42h) [reset = 0000h]
        4. 7.3.1.4  ADC_BYP Register (address = 44h) [reset = 0000h]
        5. 7.3.1.5  ADC_HYST_0 Register (address = 46h) [reset = 0808h]
        6. 7.3.1.6  ADC_HYST_1 Register (address = 47h) [reset = 0008h]
        7. 7.3.1.7  SENSE0_UP_THRESH Register (address = 50h) [reset = 7FFFh]
        8. 7.3.1.8  SENSE0_LO_THRESH Register (address = 51h) [reset = 8000h]
        9. 7.3.1.9  SENSE1_UP_THRESH Register (address = 52h) [reset = 7FFFh]
        10. 7.3.1.10 SENSE1_LO_THRESH Register (address = 53h) [reset = 8000h]
        11. 7.3.1.11 ADC0_UP_THRESH Register (address = 54h) [reset = 7FFFh]
        12. 7.3.1.12 ADC0_LO_THRESH Register (address = 55h) [reset = 0000h]
        13. 7.3.1.13 ADC1_UP_THRESH Register (address = 56h) [reset = 7FFFh]
        14. 7.3.1.14 ADC1_LO_THRESH Register (address = 57h) [reset = 0000h]
        15. 7.3.1.15 TMP_UP_THRESH Register (address = 58h) [reset = 7FFFh]
    4. 7.4 ADC Custom Channel Sequencer Configuration Register Map
      1. 7.4.1 ADC CCS Registers: Page 3
        1. 7.4.1.1 ADC_CCS_IDS_n Registers (address = 40h to 7Eh) [reset = see ]
        2. 7.4.1.2 ADC_CCS_CFG_0 Register (address = 7Fh) [reset = 0004h]
    5. 7.5 DAC Configuration Register Map
      1. 7.5.1 DAC Configuration Registers: Page 3
        1. 7.5.1.1  DAC_CURRENT Register (address = 40h) [reset = 0000h]
        2. 7.5.1.2  DAC_SYNC_CFG Register (address = 41h) [reset = 0000h]
        3. 7.5.1.3  DAC_CFG Register (address = 42h) [reset = 0000h]
        4. 7.5.1.4  DAC_APD_EN Register (address = 43h) [reset = AAFFh]
        5. 7.5.1.5  DACA_APD_SRC_0 Register (address = 44h) [reset = 0000h]
        6. 7.5.1.6  DACA_APD_SRC_1 Register (address = 45h) [reset = 1833h]
        7. 7.5.1.7  OUTA_APD_SRC_0 Register (address = 46h) [reset = 0000h]
        8. 7.5.1.8  OUTA_APD_SRC_1 Register (address = 47h) [reset = 1833h]
        9. 7.5.1.9  DACB_APD_SRC_0 Register (address = 48h) [reset = 0000h]
        10. 7.5.1.10 DACB_APD_SRC_1 Register (address = 49h) [reset = 1833h]
        11. 7.5.1.11 OUTB_APD_SRC_0 Register (address = 4Ah) [reset = 0000h]
        12. 7.5.1.12 OUTB_APD_SRC_1 Register (address = 4Bh) [reset = 1833h]
        13. 7.5.1.13 DAC_CODE_LIMIT_0 Register (address = 4Ch) [reset = 3F3Fh]
        14. 7.5.1.14 DAC_CODE_LIMIT_1 Register (address = 4Dh) [reset = 3F3Fh]
        15. 7.5.1.15 DAC_CODE_LIMIT_2 Register (address = 4Eh) [reset = 3F3Fh]
        16. 7.5.1.16 DAC_CODE_LIMIT_3 Register (address = 4Fh) [reset = 3F3Fh]
        17. 7.5.1.17 DRVEN0_EN Register (address = 50h) [reset = 0000h]
        18. 7.5.1.18 DRVEN1_EN Register (address = 51h) [reset = 0000h]
        19. 7.5.1.19 FLEXIO_EN Register (address = 52h) [reset = 0000h]
    6. 7.6 DAC Buffer Register Map
      1. 7.6.1 DAC Buffer Data Registers: Page 4
        1. 7.6.1.1 DACA/Bn Buffer Registers (address = 40h to 47h) [reset = 0000h]
    7. 7.7 DAC Active Register Map
      1. 7.7.1 DAC Active Data Registers: Page 4
        1. 7.7.1.1 DACA/Bn Active Register (address = 40h to 47h) [reset = 0000h]
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Output Switching Timing
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 ADC Input Conditioning
        2. 8.2.2.2 Quiescent Current and Total Power Consumption
          1. 8.2.2.2.1 Maximum VCC/VSS Supply Current Transients
          2. 8.2.2.2.2 DAC Load Stability
        3. 8.2.2.3 Disabling PA Drain Voltage
        4. 8.2.2.4 PAON External Circuit
      3. 8.2.3 Application Curves
        1. 8.2.3.1 DAC Load Stability
        2. 8.2.3.2 Start-Up Behavior
    3. 8.3 Initialization Setup
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Diagram
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

6.3.6 Internal Temperature Sensor

The device has an on-chip temperature sensor that measures the device die temperature. The normal operating temperature range for the internal temperature sensor is limited by the operating temperature range of the device (–55°C to +150°C).

The temperature sensor has a resolution of 16 bits (0.0078°C) and conversion is independent from the device SAR ADC. Temperature data results are represented in binary format, as shown in Table 6-4. The temperature data format allows for representation of negative temperatures using signed 2's complement representation. Make sure to observe the parameter values listed in the Absolute Maximum Ratings table.

Table 6-4 Temperature Data Format (ADC_TMP [15:0])
TEMPERATURE
(°C)		INTERNAL TEMPERATURE REGISTER VALUE
BINARYHEX
–551111 1111 1100 1001FFC9
–251111 1111 1110 0111FFE7
–11111 1111 1111 1111FFFF
00000 0000 0000 00000000
10000 0000 1000 00000080
100000 0101 0000 00000500
250000 1100 1000 00000C80
500001 1001 0000 00001900
750010 0101 1000 00002580
1000011 0010 0000 00003200
1250011 1110 1000 00003E80
1270011 1111 1000 00003F80
1500100 1011 0000 00004B00

The temperature data registers are accessed by reading the ADC_TMP register, located in the global register page.