SLAS959D August   2013  – February 2018 DAC3151 , DAC3161 , DAC3171

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     DAC31x1 System Block Diagram
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions: DAC3151
    2.     Pin Functions: DAC3161
    3.     Pin Functions: DAC3171 7-Bit Interface Mode
    4.     Pin Functions: DAC3171 14-Bit Interface Mode
  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: DC Specifications
    6. 6.6 Electrical Characteristics: AC Specifications
    7. 6.7 Electrical Characteristics: Digital Specifications
    8. 6.8 Timing Requirements
    9. 6.9 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 Data Input Formats
      2. 7.3.2 Serial Interface
        1. Table 1. Instruction Byte of the Serial interface
    4. 7.4 Device Functional Modes
      1. 7.4.1 Synchronization Modes
      2. 7.4.2 Alarm Monitoring
    5. 7.5 Programming
      1. 7.5.1 Power-Up Sequence
    6. 7.6 Register Map
      1. 7.6.1  Register Name: config0 – Address: 0x00, Default: 0x4FC
        1. Table 6. Register Name: config0 – Address: 0x00, Default: 0x4FC
      2. 7.6.2  Register Name: config1 – Address: 0x01, Default: 0x600E
        1. Table 7. Register Name: config1 – Address: 0x01, Default: 0x600E
      3. 7.6.3  Register Name: config2 – Address: 0x02, Default: 0x3FFF
        1. Table 8. Register Name: config2 – Address: 0x02, Default: 0x3FFF
      4. 7.6.4  Register Name: config3 – Address: 0x03, Default: 0x0000
        1. Table 9. Register Name: config3 – Address: 0x03, Default: 0x0000
      5. 7.6.5  Register Name: config4 – Address: 0x04, Default: 0x0000
        1. Table 10. Register Name: config4 – Address: 0x04, Default: 0x0000
      6. 7.6.6  Register Name: config5 – Address: 0x05, Default: 0x0000
        1. Table 11. Register Name: config5 – Address: 0x05, Default: 0x0000
      7. 7.6.7  Register Name: config6 – Address: 0x06, Default: 0x0010(DAC3171); 0x0094(DAC3161); 0x0098(DAC3151)
        1. Table 12. Register Name: config6 – Address: 0x06, Default: 0x0010(DAC3171); 0x0094(DAC3161); 0x0098(DAC3151)
      8. 7.6.8  Register Name: config7 – Address: 0x07, Default: 0xFFFF
        1. Table 13. Register Name: config7 – Address: 0x07, Default: 0xFFFF
      9. 7.6.9  Register Name: config8 – Address: 0x08, Default: 0x6000
        1. Table 14. Register Name: config8 – Address: 0x08, Default: 0x6000
      10. 7.6.10 Register Name: config9 – Address: 0x09, Default: 0x8000
        1. Table 15. Register Name: config9 – Address: 0x09, Default: 0x8000
      11. 7.6.11 Register name: config10 – Address: 0x0A, Default: 0xF080
        1. Table 16. Register Name: config10 – Address: 0x0A, Default: 0xF080
      12. 7.6.12 Register Name: config11 – Address: 0x0B, Default: 0x1111
        1. Table 17. Register Name: config11 – Address: 0x0B, Default: 0x1111
      13. 7.6.13 Register Name: config12 – Address: 0x0C, Default: 0x3A7A
        1. Table 18. Register Name: config12 – Address: 0x0C, Default: 0x3A7A
      14. 7.6.14 Register Name: config13 – Address: 0x0D, Default: 0x36B6
        1. Table 19. Register Name: config13 – Address: 0x0D, Default: 0x36B6
      15. 7.6.15 Register Name: config14 – Address: 0x0E, Default: 0x2AEA
        1. Table 20. Register name: config14 – Address: 0x0E, Default: 0x2AEA
      16. 7.6.16 Register name: config15 – Address: 0x0F, Default: 0x0545
        1. Table 21. Register Name: config15 – Address: 0x0F, Default: 0x0545
      17. 7.6.17 Register Name: config16 – Address: 0x10, Default: 0x0585
        1. Table 22. Register Name: config16 – Address: 0x10, Default: 0x0585
      18. 7.6.18 Register Name: config17 – Address: 0x11, Default: 0x0949
        1. Table 23. Register Name: config17 – Address: 0x11, Default: 0x0949
      19. 7.6.19 Register Name: config18 – Address: 0x12, Default: 0x1515
        1. Table 24. Register Name: config18 – Address: 0x12, Default: 0x1515
      20. 7.6.20 Register Name: config19 – Address: 0x13, Default: 0x3ABA
        1. Table 25. Register Name: config19 – Address: 0x13, Default: 0x3ABA
      21. 7.6.21 Register Name: config20– Address: 0x14, Default: 0x0000
        1. Table 26. Register Name: config20– Address: 0x14, Default: 0x0000
      22. 7.6.22 Register Name: config21– Address: 0x15, Default: 0xFFFF
        1. Table 27. Register Name: config21– Address: 0x15, Default: 0xFFFF
      23. 7.6.23 Register Name: config22– Address: 0x16, Default: 0x0000
        1. Table 28. Register Name: config22– Address: 0x16, Default: 0x0000
      24. 7.6.24 Register Name: config23– Address: 0x17, Default: 0x0000
        1. Table 29. Register Name: config23– Address: 0x17, Default: 0x0000
      25. 7.6.25 Register Name: config24– Address: 0x18, Default: 0x0000
        1. Table 30. Register Name: config24– Address: 0x18, Default: 0x0000
      26. 7.6.26 Register Name: config25– Address: 0x19, Default: 0x0000
        1. Table 31. Register Name: config25– Address: 0x19, Default: 0x0000
      27. 7.6.27 Register Name: config127– Address: 0x7F, Default: 0x0045
        1. Table 32. Register Name: config127– Address: 0x7F, Default: 0x0045
  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 Device Support
      1. 11.1.1 Definition of Specifications
    2. 11.2 Related Links
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Community Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.4.2 Alarm Monitoring

The DAC31x1 includes flexible alarm monitoring that can be used to alert a possible malfunction scenario. All alarm events can be accessed either through the SIP registers or through the ALARM pin. After an alarm is set, the corresponding alarm bit in register config5 must be reset through the serial interface to allow further testing. The set of alarms includes: zero check alarm, FIFO alarms, clock alarms, and pattern checker alarm.

Zero check alarm:

  • Alarm_from_zerochk occurs when the FIFO write pointer has an all zeros pattern. The write pointer is a shift register; therefore, all zeros cause the input point to be stuck until the next sync event. When this alarm triggers, a sync to the FIFO block is required.

FIFO alarms:

  • alarm_from_fifo occurs when there is a collision in the FIFO pointers or a collision event is close.
  • alarm_fifo_2away occurs when pointers are within two addresses of each other.
  • alarm_fifo_1away occurs when pointers are within one address of each other.
  • alarm_fifo_collision occurs when pointers are equal to each other.

Clock alarms:

  • clock_gone occurs when either the DACCLK or DATACLOCK have been stopped.
  • alarm_dacclk_gone occurs when the DACCLK has been stopped.
  • alarm_dataclk_gone occurs when the DATACLK has been stopped.

Pattern checker alarm:

  • alarm_from_iotest occurs when the input data pattern does not match the pattern key.

To prevent unexpected DAC outputs from propagating into the transmit channel chain, the DAC31x1 includes a feature that disables the outputs when a catastrophic alarm occurs. The catastrophic alarms include FIFO pointer collision, the loss DACCLK, or the loss of DATACLK. When any of these alarms occur, the internal TXenable signal is driven low, causing a zeroing of the data going to the DAC in < 10 T. One caveat is if both clocks stop, the circuit cannot determine clock loss, so no alarms are generated; therefore, no zeroing of output data occurs.