SBASAB5 March   2024 ADC3683-SP

PRODMIX  

  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 - Power Consumption
    6. 5.6 Electrical Characteristics - DC Specifications
    7. 5.7 Electrical Characteristics - AC Specifications
    8. 5.8 Timing Requirements
    9. 5.9 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Analog Input
        1. 7.3.1.1 Analog Front End Design
          1. 7.3.1.1.1 Sampling Glitch Filter Design
          2. 7.3.1.1.2 Analog Input Termination and DC Bias
            1. 7.3.1.1.2.1 AC-Coupling
            2. 7.3.1.1.2.2 DC-Coupling
        2. 7.3.1.2 Auto-Zero Feature
      2. 7.3.2 Clock Input
        1. 7.3.2.1 Single Ended vs Differential Clock Input
        2. 7.3.2.2 Signal Acquisition Time Adjust
      3. 7.3.3 Voltage Reference
        1. 7.3.3.1 Internal Voltage Reference
        2. 7.3.3.2 External Voltage Reference (VREF)
        3. 7.3.3.3 External Voltage Reference with Internal Buffer (REFBUF)
      4. 7.3.4 Digital Down Converter
        1. 7.3.4.1 DDC MUX
        2. 7.3.4.2 Digital Filter Operation
        3. 7.3.4.3 FS/4 Mixing with Real Output
        4. 7.3.4.4 Numerically Controlled Oscillator (NCO) and Digital Mixer
        5. 7.3.4.5 Decimation Filter
        6. 7.3.4.6 SYNC
        7. 7.3.4.7 Output Formatting with Decimation
      5. 7.3.5 Digital Interface
        1. 7.3.5.1 Output Formatter
        2. 7.3.5.2 Output Scrambler
        3. 7.3.5.3 Output Bit Mapper
          1. 7.3.5.3.1 2-Wire Mode
          2. 7.3.5.3.2 1-Wire Mode
          3. 7.3.5.3.3 ½-Wire Mode
        4. 7.3.5.4 Output Interface or Mode Configuration
          1. 7.3.5.4.1 Configuration Example
        5. 7.3.5.5 Output Data Format
      6. 7.3.6 Test Pattern
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation
      2. 7.4.2 Power Down Options
      3. 7.4.3 Digital Channel Averaging
    5. 7.5 Programming
      1. 7.5.1 Configuration using PINs only
      2. 7.5.2 Configuration using the SPI interface
        1. 7.5.2.1 Register Write
        2. 7.5.2.2 Register Read
  9. 8 Application Information Disclaimer
    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 Input Signal Path
        2. 8.2.2.2 Sampling Clock
        3. 8.2.2.3 Voltage Reference
      3. 8.2.3 Application Curves
    3. 8.3 Initialization Set Up
      1. 8.3.1 Register Initialization During Operation
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Example
  10. 9 Register Map
    1. 9.1 Detailed Register Description
  11. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Mechanical Data

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • HBP|64
Thermal pad, mechanical data (Package|Pins)
Orderable Information
7.3.5.4.1 Configuration Example

The following is a step by step programming example to configure the ADC3683-SP to complex decimation by 8 with 1-wire SLVDS and 16-bit output.

  1. 0x07 (address) 0x6C (load bit mapper configuration for 16-bit output with 1-wire SLVDS)
  2. 0x13 0x01, wait 1 ms, 0x13 0x00 (load e-fuse)
  3. 0x19 0x80 (configure FCLK)
  4. 0x1B 0x88 (select 16-bit output resolution)
  5. 0x20 0xFF, 0x21 0xFF, 0x22 0x0F (configure FCLK pattern)
  6. 0x24 0x06 (enable decimation filter)
  7. 0x25 0x30 (configure complex decimation by 8)
  8. 0x2A/B/C/D and 0x31/32/33/34 (program NCO frequency)
  9. 0x27/0x2E 0x08 (configure Q-delay register bit)
  10. 0x26 0xAA, 0x26 0x88 (set digital mixer gain to 6dB and toggle the mixer update)