SLASFL3 September   2026 DAC90802

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 Timing Diagrams
    8. 5.8 Typical Characteristics
      1. 5.8.1 Typical Characteristics: Linearity
      2. 5.8.2 Typical Characteristics: Glitch
      3. 5.8.3 Typical Characteristics: Multiplying Mode
      4. 5.8.4 Typical Characteristics: Fast-Settling Mode
      5. 5.8.5 Typical Characteristics: AWG Mode
  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 Converters
        1. 6.3.1.1 Reference
        2. 6.3.1.2 Output Span
          1. 6.3.1.2.1 Gain Overrange
        3. 6.3.1.3 Output Synchronization
        4. 6.3.1.4 Thermal Sensors
      2. 6.3.2 Power-On
      3. 6.3.3 Serial Data Interface
        1. 6.3.3.1 SPI Configurations
        2. 6.3.3.2 SPI Stream Mode
        3. 6.3.3.3 SPI Daisy Chain Mode
    4. 6.4 Device Functional Modes
      1. 6.4.1 AWG Mode
      2. 6.4.2 Fast Settling Mode
      3. 6.4.3 Multiplying Mode
  8. 7 Register Maps
    1. 7.1 COMMON Registers
    2. 7.2 HS_DATA Registers
    3. 7.3 HR_DATA Registers
  9. 8 Application and Implementation
    1. 8.1 Application
    2. 8.2 Design Requirements
      1. 8.2.1 Reference Signal Chain Information
        1. 8.2.1.1 DC Reference
        2. 8.2.1.2 AC Reference
      2. 8.2.2 Optimising the Self-Heating Trim to Achieve Lowest THD Across Frequencies for High Voltage Swing
      3. 8.2.3 Digital Interface
      4. 8.2.4 Grounding Recommendations
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Recommendation
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 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

4 Pin Configuration and Functions

Figure 4-1 DAC90802PHP Package, 48-Pin HTQFP (Top View)
Table 4-1 Pin Functions
PIN TYPE DESCRIPTION
NAME NO.
AGND 41 Ground Analog ground.
AVDD 44 Power Analog low voltage supply.
CS 26 Input Chip-select, active-low input.
DGND 17 Ground Digital ground.
DVDD 15 Power Digital low voltage supply.
LDAC0 19 Input Load-DAC0 edge-sensitive active-low input.(6)
LDAC1 20 Input Load-DAC1 edge-sensitive active-low input.(6)
LGND 18 Ground Low Noise DAC clock ground.
LVDD 16 Power Low Noise DAC clock supply.
NC 11, 12 – No Connect.(5)
RCOM0 / VREFN_S0 46 Input/Output DAC0 reference inversion driver precision resistor pair common input / VREFN sense.(1)
RCOM1 / VREFN_S1 39 Input/Output DAC1 reference inversion driver precision resistor pair common input / VREFN sense.(1)
REFGND0 3 Input Ground reference input for the DAC0 R‑2R network.(1)
REFGND1 34 Input Ground reference input for the DAC1 R‑2R network.(1)
REFIN_F0 47 Input DAC0 reference inversion driver precision resistor pair force input.(4)
REFIN_F1 38 Input DAC1 reference inversion driver precision resistor pair force input.(4)
REFIN_S0 48 Output DAC0 reference inversion driver precision resistor pair sense output.(1)
REFIN_S1 37 Output DAC1 reference inversion driver precision resistor pair sense output.(1)
RESET 13 Input Active-low reset input.
RFB_F0 6 Input DAC0 precision feedback resistor RFB force input.(3)
RFB_F1 31 Input DAC1 precision feedback resistor RFB force input.(3)
RFB_S0 7 Output DAC0 precision feedback resistor RFB sense output.(1)
RFB_S1 30 Output DAC1 precision feedback resistor RFB sense output.(1)
ROFS_F0 9 Input DAC0 precision offset resistor force input.(2)
ROFS_F1 28 Input DAC1 precision offset resistor force input.(2)
ROFS_S0 10 Output DAC0 precision offset resistor sense input.(1)
ROFS_S1 27 Output DAC1 precision offset resistor sense input.(1)
SCLK 25 Input SPI clock input.
SDIO0 24 Input Quad SPI Input pin.
SDIO1 23 Input Quad SPI Input pin.
SDIO2 22 Input/Output Quad SPI IO pin.
SDIO3 21 Input/Output Quad SPI IO pin.
TEMP0 4 Output DAC0 internal temperature sensor output.
TEMP1 33 Output DAC1 internal temperature sensor output.
VCC 43 Power High voltage positive analog supply.
VEE 42 Power High voltage negative analog supply.
VIO 14 Power IO voltage power supply.
VOSADJ0 8 Input DAC0 analog fine offset-tuning input.(2)
VOSADJ1 29 Input DAC1 analog fine offset-tuning input.(2)
VOUT0 5 Output DAC0 voltage output pin.
VOUT1 32 Output DAC1 voltage output pin.
VREFN_F0 45 Input Negative DAC0 reference force input.(2)
VREFN_F1 40 Input Negative DAC1 reference force input.(2)
VREFP_F0 1 Input DAC0 positive reference force input.(2)
VREFP_F1 36 Input DAC1 positive reference force input.(2)
VREFP_S0 2 Output DAC0 positive reference sense output.(1)
VREFP_S1 35 Output DAC1 positive reference sense output.(1)
Thermal Pad Thermal Pad — The thermal pad connects to internal PCB VEE plane through multiple vias for good thermal performance. Do not use the thermal pad as means to power the device.
(1) Connect to corresponding force _Fx pin if not used, do not leave unconnected
(2) Connect to AGND if not used, do not leave unconnected
(3) Connect to respective channel VOUT pin when unused, do not leave unconnected
(4) Connect to respective channel RCOM pin when unused, do not leave unconnected
(5) Connect to either VIO or DGND to prevent floating conditions
(6) Connect to LGND pin when unused
Note: DAC90802 implements identical independent DACs and a shared SPI. Pin names using a numerical suffix (except SDIOx) belong to the respective DAC, with identical functions for each DAC. Kelvin-connected pins use suffixes _Fx, and _Sx respectively for force, and sense lines. Pins (except SDIOx) are collectively referenced here by the primary names without suffixes.
Note: Connect the unused pins in accordance with the use case. For example, if a two-wire Kelvin connection is not required, connect the respective _Fx, _Sx pins of the same signal together to maintain the specified performance of the DAC90802.