SLASF03 December   2021 DAC11001B

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  Timing Requirements: Write, 4.5 V ≤ DVDD ≤ 5.5 V
    7. 6.7  Timing Requirements: Write, 2.7 V ≤ DVDD < 4.5 V
    8. 6.8  Timing Requirements: Read and Daisy-Chain Write, 4.5 V ≤ DVDD ≤ 5.5 V
    9. 6.9  Timing Requirements: Read and Daisy-Chain Write, 2.7 V ≤ DVDD < 4.5 V
    10. 6.10 Timing Diagrams
    11. 6.11 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-to-Analog Converter Architecture
      2. 7.3.2 External Reference
      3. 7.3.3 Output Buffers
      4. 7.3.4 Internal Power-On Reset (POR)
      5. 7.3.5 Temperature Drift and Calibration
      6. 7.3.6 DAC Output Deglitch Circuit
    4. 7.4 Device Functional Modes
      1. 7.4.1 Fast-Settling Mode and THD
      2. 7.4.2 DAC Update Rate Mode
    5. 7.5 Programming
      1. 7.5.1 Daisy-Chain Operation
      2. 7.5.2 CLR Pin Functionality and Software Clear
      3. 7.5.3 Output Update (Synchronous and Asynchronous)
        1. 7.5.3.1 Synchronous Update
        2. 7.5.3.2 Asynchronous Update
      4. 7.5.4 Software Reset Mode
    6. 7.6 Register Map
      1. 7.6.1 NOP Register (address = 00h) [reset = 0x000000h for bits [23:0]]
      2. 7.6.2 DAC-DATA Register (address = 01h) [reset = 0x000000h for bits [23:0]]
      3. 7.6.3 CONFIG1 Register (address = 02h) [reset = 004C80h for bits [23:0]]
      4. 7.6.4 DAC-CLEAR-DATA Register (address = 03h) [reset = 000000h for bits [23:0]]
      5. 7.6.5 TRIGGER Register (address = 04h) [reset = 000000h for bits [23:0]]
      6. 7.6.6 STATUS Register (address = 05h) [reset = 000000h for bits [23:0]]
      7. 7.6.7 CONFIG2 Register (address = 06h) [reset = 000040h for bits [23:0]]
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Source Measure Unit (SMU)
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 High-Precision Control Loop
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
      3. 8.2.3 Arbitrary Waveform Generation (AWG)
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
        3. 8.2.3.3 Application Curves
    3. 8.3 System Examples
      1. 8.3.1 Interfacing to a Processor
      2. 8.3.2 Interfacing to a Low-Jitter LDAC Source
      3. 8.3.3 Embedded Resistor Configurations
        1. 8.3.3.1 Minimizing Bias Current Mismatch
        2. 8.3.3.2 2x Gain Configuration
        3. 8.3.3.3 Generating Negative Reference
    4. 8.4 What to Do and What Not to Do
      1. 8.4.1 What to Do
      2. 8.4.2 What Not to Do
    5. 8.5 Initialization Set Up
  9. 9 Power Supply Recommendations
    1. 9.1 Power-Supply Sequencing
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 PCB Assembly Effects on Precision
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

5 Pin Configuration and Functions

Figure 5-1 PFB Package, 48-Pin TQFP, Top View
Table 5-1 Pin Functions
PIN TYPE DESCRIPTION
NAME NO.
AGND 2, 35, 38, 40, 42, 43, 46, 47 Analog ground Connect to 0 V.
AGND-OUT 8 Analog ground Connect to 0 V. Measure DAC output voltage with respect to this node.
AGND-TnH 14 Analog ground Connect to 0 V. Integrated deglitcher clock ground.
ALARM 19 Output Alarm output
AVDD 39, 41 Power Positive low voltage analog power supply
CLR 30 Input DAC registers clear pin, active low
DGND 16, 17, 20, 21, 22, 23, 26 Digital ground Connect to 0 V.
DVDD 27 Power Digital power supply pin
RFB 9 Input Integrated precision resistor feedback node
IOVDD 28 Power Interface power supply pin
LDAC 18 Input Load DAC pin, active low
NC 1, 12, 13, 15, 24, 25, 29, 36, 37, 48 — No connection, leave floating
OUT 7 Output Unbuffered voltage output
RCM 11 Input Integrated precision resistor common-mode node
REFNF 5 Input External negative reference input. Connect to 0 V for unipolar DAC output.
REFNS 6 Input External negative reference sense node
REFPF 3 Input External positive reference input
REFPS 4 Input External positive reference sense node
ROFS 10 Input Integrated precision resistor offset node
SCLK 31 Input Serial clock input of serial peripheral interface (SPI). Schmitt-trigger logic input.
Data are transferred at rates of up to 50 MHz.
SDIN 32 Input Serial data input. Schmitt-trigger logic input.
Data are clocked into the input shift register on the falling edge of the serial clock input.
SDO 34 Output Serial data output. Data are valid on the falling edge of SCLK.
SYNC 33 Input SPI bus chip select input (active low). Data bits are not clocked into the serial shift register unless SYNC is low. When SYNC is high, the SDO pin is in high-impedance status.
VCC 45 Power Analog positive power supply
VSS 44 Power Analog negative power supply