SLASF77A December   2022  – September 2023 AFE11612-SEP

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  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  Timing Characteristics
    7. 6.7  Timing Diagrams
    8. 6.8  Typical Characteristics: DAC
    9. 6.9  Typical Characteristics: ADC
    10. 6.10 Typical Characteristics: Internal Reference
    11. 6.11 Typical Characteristics: Temperature Sensor
    12. 6.12 Typical Characteristics: Digital Inputs
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Primary ADC Operation
        1. 7.3.1.1 Analog Inputs
          1. 7.3.1.1.1 Single-Ended Analog Input
          2. 7.3.1.1.2 Fully Differential Input
        2. 7.3.1.2 ADC Trigger Signals (See AFE configuration register 0 )
        3. 7.3.1.3 Double-Buffered ADC Data Registers
          1. 7.3.1.3.1 ADC Data Format
        4. 7.3.1.4 SCLK Clock Noise Reduction
        5. 7.3.1.5 Data Available Pin (DAV)
        6. 7.3.1.6 Convert Pin (CNVT)
        7. 7.3.1.7 Analog Input Out-of-Range Detection (See The Analog Input Out-of-Range Alarm Section)
        8. 7.3.1.8 Full-Scale Range of the Analog Input
      2. 7.3.2 Secondary ADC and Temperature Sensor Operation
        1. 7.3.2.1 Remote Sensing Diode
        2. 7.3.2.2 Ideality Factor
        3. 7.3.2.3 Filtering
        4. 7.3.2.4 Series Resistance Cancellation
        5. 7.3.2.5 Reading Temperature Data
        6. 7.3.2.6 Conversion Time
      3. 7.3.3 Reference Operation
        1. 7.3.3.1 Internal Reference
        2. 7.3.3.2 External Reference
      4. 7.3.4 DAC Operation
        1. 7.3.4.1 Resistor String
        2. 7.3.4.2 DAC Output
          1. 7.3.4.2.1 Full-Scale Output Range
          2. 7.3.4.2.2 DAC Output After Power-On Reset
        3. 7.3.4.3 Double-Buffered DAC Data Registers
        4. 7.3.4.4 Load DAC Latch
        5. 7.3.4.5 Synchronous Output Updating
        6. 7.3.4.6 Clear DACs
        7. 7.3.4.7 DAC Output Thermal Protection
      5. 7.3.5 Alarm Operation
        1. 7.3.5.1 Analog Input Out-of-Range Alarm
        2. 7.3.5.2 ALARM Pin
        3. 7.3.5.3 Hysteresis
        4. 7.3.5.4 False-Alarm Protection
      6. 7.3.6 General-Purpose Input and Output Pins (GPIO-0 To GPIO-7)
      7. 7.3.7 Device Reset Options
        1. 7.3.7.1 Hardware Reset
        2. 7.3.7.2 Software Reset
        3. 7.3.7.3 Power-On Reset (POR)
    4. 7.4 Device Functional Modes
      1. 7.4.1 DAC Output Mode
      2. 7.4.2 ADC Conversion Modes
        1. 7.4.2.1 Programmable Conversion Rate
        2. 7.4.2.2 Handshaking with the Host (See AFE configuration register 0 )
    5. 7.5 Programming
      1. 7.5.1 I2C-Compatible Interface
        1. 7.5.1.1 F/S-Mode Protocol
        2. 7.5.1.2 Hs-Mode Protocol
        3. 7.5.1.3 Address Pointer
        4. 7.5.1.4 Timeout Function
        5. 7.5.1.5 Device Communication Protocol For I2C
          1. 7.5.1.5.1 Writing A Single Register ( )
          2. 7.5.1.5.2 Writing Multiple Registers ( )
          3. 7.5.1.5.3 Reading a Single Register ( )
          4. 7.5.1.5.4 Reading Multiple Registers ( and )
      2. 7.5.2 Serial Peripheral Interface (SPI)
        1. 7.5.2.1 SPI Shift Register
        2. 7.5.2.2 SPI Communications Command
        3. 7.5.2.3 Standalone Operation
        4. 7.5.2.4 Daisy-Chain Operation
    6. 7.6 Register Maps
      1. 7.6.1  Temperature Data Registers (Read-Only)
        1. 7.6.1.1 LT-Temperature-Data (LT_TEMP) Register (address = 00h) [reset = 0000h, 0°C]
        2. 7.6.1.2 D1-Temperature-Data (D1_TEMP) Register (address = 01h) [reset = 0000h, 0°C]
        3. 7.6.1.3 D2-Temperature-Data (D2_TEMP) Register (address = 02h) [reset = 0000h, 0°C]
      2. 7.6.2  Temperature Configuration (TEMP_CONFIG) Register (address = 0Ah) [reset = 003Ch or 3CFFh]
      3. 7.6.3  Temperature Conversion Rate (TEMP_CONV_RATE) Register (address = 0Bh) [reset = 0007h or 07FFh]
      4. 7.6.4  η-Factor Correction Registers: D1_N_ADJUST and D2_N_ADJUST (address = 21h and 22h) [reset = 0000h or 00FFh]
      5. 7.6.5  ADC-n-Data (ADC_n) Registers (addresses = 23h to 32h) [reset = 0000h]
      6. 7.6.6  DAC-n-Data (DAC_n) Registers (addresses = 33h to 3Eh) [reset = 0000h)
      7. 7.6.7  DAC-n-CLR-Setting (DAC_n_CLR) Registers (addresses = 3Fh to 4Ah) [reset = 0000h]
      8. 7.6.8  GPIO Register (address = 4Bh) [reset = 00FFh]
      9. 7.6.9  AFE Configuration Register 0 (AFE_CONFIG_0) (address = 4Ch) [reset = 2000h]
      10. 7.6.10 AFE Configuration Register 1 (AFE_CONFIG_1) (Address = 4Dh) [reset = 0070h]
      11. 7.6.11 Alarm Control Register (ALR_CTRL) (address = 4Eh) [reset = 0000h]
      12. 7.6.12 STATUS Register (Address = 4Fh) [reset = 0000h]
      13. 7.6.13 ADC Channel Register 0 (ADC_CH0) (address = 50h) [reset = 0000h]
      14. 7.6.14 ADC Channel Register 1 (ADC_CH1) (address = 51h) [reset = 0000h]
      15. 7.6.15 ADC Gain Register (ADC_GAIN) (address = 52h) [reset = FFFFh]
      16. 7.6.16 AUTO_DAC_CLR_SOURCE Register (address = 53h) [reset = 0004h]
      17. 7.6.17 AUTO_DAC_CLR_EN Register (address = 54h) [reset = 0000h]
      18. 7.6.18 SW_DAC_CLR Register (address = 55h) [reset = 0000h]
      19. 7.6.19 HW_DAC_CLR_EN_0 Register (address = 56h) [reset = 0000h]
      20. 7.6.20 HW_DAC_CLR_EN_1 Register (address = 57h) [reset = 0000h]
      21. 7.6.21 DAC Configuration (DAC_CONFIG) Register (address = 58h) [reset = 0000h]
      22. 7.6.22 DAC Gain (DAC_GAIN) Register (address = 59h) [reset = 0000h]
      23. 7.6.23 Analog Input Channel Threshold Registers (addresses = 5Ah To 61h)
        1. 7.6.23.1 Input-n-High-Threshold Register (where n = 0, 1, 2, 3; addresses: 0 = 5Ah, 1 = 5Ch, 2 = 5Eh, 3 = 60h) [reset = 0FFFh]
        2. 7.6.23.2 Input-n-Low-Threshold Register (where n = 0, 1, 2, 3; addresses: 0 = 5Bh, 1 = 5Dh, 2 = 5Fh, 3 = 61h) (reset = 0000h)
      24. 7.6.24 Temperature Threshold Registers
        1. 7.6.24.1 LT_HIGH_THRESHOLD Register (address = 62h) [reset = 07FFh, +255.875°C]
        2. 7.6.24.2 LT_LOW_THRESHOLD Register (address = 63h) [reset = 0800h, –256°C]
        3. 7.6.24.3 D1_HIGH_THRESHOLD Register (address = 64h) [reset = 07FFh, +255.875°C]
        4. 7.6.24.4 D1_LOW_THRESHOLD Register (address = 65h) [reset = 0800h, –256°C]
        5. 7.6.24.5 D2_HIGH_THRESHOLD Register (address = 66h) [reset = 07FFh, +255.875°C]
        6. 7.6.24.6 D2_LOW_THRESHOLD Register (address = 67h) [reset = 0800h, –256°C]
      25. 7.6.25 Hysteresis Registers
        1. 7.6.25.1 Hysteresis Register 0 (HYST_0) (address = 68h) [reset = 0810h, 8 LSB]
        2. 7.6.25.2 Hysteresis Register 1 (HYST_1) (address = 69h) [reset = 0810h, 8 LSB]
        3. 7.6.25.3 Hysteresis Register 2 (HYST_2) (address = 6Ah) [reset = 2108h, 8°C]
      26. 7.6.26 Power-Down Register (PWR_DOWN) (address = 6Bh) [reset = 0000h)
      27. 7.6.27 Device ID Register (DEVICE_ID) (read only address = 6Ch) [reset = 1220h]
      28. 7.6.28 Software Reset (SW_RST) Register (read or write address = 7Ch) [reset = N/A)
        1. 7.6.28.1 SPI Mode
        2. 7.6.28.2 I2C Mode
  9. 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
        1. 8.2.2.1 Sequencing
        2. 8.2.2.2 Negative GaN Biasing
        3. 8.2.2.3 VDRAIN Monitoring
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 Power-Supply Sequence
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Diagram
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
    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. 10Mechanical, Packaging, and Orderable Information

Package Options

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

7.6.16 AUTO_DAC_CLR_SOURCE Register (address = 53h) [reset = 0004h]

This register selects which alarm forces the DAC into a clear state, regardless of which DAC operation mode is active, auto, or manual.

Figure 7-53 AUTO_DAC_CLR_SOURCE Register
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Reserved CH0_
ALR_
CLR		 CH1_
ALR_
CLR		 CH2_
ALR_
CLR		 CH3_
ALR_
CLR		 LT_
LOW_
ALR_
CLR		 LT_
HIGH_
ALR_
CLR		 D1_
LOW_
ALR_
CLR		 D1_
HIGH_
ALR_
CLR		 D2_
LOW_
ALR_
CLR		 D2_
HIGH_
ALR_
CLR		 D1_
FAIL_
CLR		 D2_
FAIL_
CLR		 THERM_
ALR_
CLR		 Reserved
R-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-1 R-0h
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 7-33 AUTO_DAC_CLR_SOURCE Register
Bit Field Type Reset Description
14 CH0_ALR_CLR R/W 0 CH0 alarm clear bit.
0: CH1_ALR goes to 1 and does not force any DAC to a clear status
1: DACn is forced to a clear status if both the ACLRn bit in the AUTO_DAC_CLR_EN register and the CH0_ALR bit in the status register are set (1)
13 CH1_ALR_CLR R/W 0 CH1 alarm clear bit.
0: CH1_ALR goes to 1 and does not force any DAC to a clear status
1: DACn is forced to a clear status if both the ACLRn bit in the AUTO_DAC_CLR_EN register and the CH1_ALR bit in the status register are set (1)
12 CH2_ALR_CLR R/W 0 CH2 alarm clear bit.
0: CH2_ALR goes to 1 and does not force any DAC to a clear status
1: DACn is forced to a clear status if both the ACLRn bit in the AUTO_DAC_CLR_EN register and the CH2_ALR bit in the status register are set (1)
11 CH3_ALR_CLR R/W 0 CH3 alarm clear bit.
0: CH3_ALR goes to 1 and does not force any DAC to a clear status
1: DACn is forced to a clear status if both the ACLRn bit in the AUTO_DAC_CLR_EN register and the CH3_ALR bit in the status register are set (1)
10 LT_LOW_ALR_
CLR		 R/W 0 Local temperature sensor low alarm clear bit.
0: LT_LOW_ALR goes to 1 and does not force any DAC to a clear status
1: DACn is forced to a clear status if both the ACLRn bit in the AUTO_DAC_CLR_EN register and the LT_LOW_ALR bit in the status register are set (1)
9 LT_HIGH_ALR_
CLR		 R/W 0 Local temperature sensor high alarm clear bit.
0: LT_HIGH_ALR goes to 1 and does not force any DAC to a clear status
1: DACn is forced to a clear status if both the ACLRn bit in the AUTO_DAC_CLR_EN register and the LT_HIGH_ALR bit in the status register are set (1)
8 D1_LOW_ALR_
CLR		 R/W 0 Remote temperature sensor D1 low alarm clear bit.
0: D1_LOW_ALR goes to 1 and does not force any DAC to a clear status
1: DACn is forced to a clear status if both the ACLRn bit in the AUTO_DAC_CLR_EN register and the D1_LOW_ALR bit in the status register are set (1)
7 D1_HIGH_ALR_
CLR		 R/W 0 Remote temperature sensor D1 high alarm clear bit.
0: D1_High_ALR goes to 1 and does not force any DAC to a clear status
1: DACn is forced to a clear status if both the ACLRn bit in the AUTO_DAC_CLR_EN register and the D1_High_ALR bit in the status register are set (1)
6 D2_LOW_ALR_
CLR		 R/W 0 Remote temperature sensor D2 low alarm clear bit.
0: D2_LOW_ALR goes to 1 and does not force any DAC to a clear status
1: DACn is forced to a clear status if both the ACLRn bit in the AUTO_DAC_CLR_EN register and the D2_LOW_ALR bit in the status register are set (1)
5 D2_HIGH_ALR_
CLR		 R/W 0 Remote temperature sensor D2 high alarm clear bit.
0: D2_HIGH_ALR goes to 1 and does not force any DAC to a clear status
1: DACn is forced to a clear status if both the ACLRn bit in the AUTO_DAC_CLR_EN register and the D2_HIGH_ALR bit in the status register are set (1)
4 D1_FAIL_CLR R/W 0 D1 fail alarm clear bit.
0: D1_FAIL_ALR goes to 1 and does not force any DAC to a clear status
1: DACn is forced to a clear status if both the ACLRn bit in the AUTO_DAC_CLR_EN register and the D2_FAIL_ALR bit in the status register are set (1)
3 D2_FAIL_CLR R/W 0 D2 fail alarm clear bit.
0: D2_FAIL_ALR goes to 1 and does not force any DAC to a clear status
1: DACn is forced to a clear status if both the ACLRn bit in the AUTO_DAC_CLR_EN register and the D2_FAIL_ALR bit in the status register are set (1)
2 THERM_ALR_
CLR		 R/W 1 Thermal alarm clear bit.
0: THERM_ALR goes to 1 and does not force any DAC to a clear status
1: DACn is forced to a clear status if both the ACLRn bit in the AUTO_DAC_CLR_EN register and the THERM_ALR bit in the status register are set (1)