SBAS888A December   2020  – August 2021

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 - Power Consumption
    6. 6.6 Electrical Characteristics - DC Specifications
    7. 6.7 Electrical Characteristics - AC Specifications
    8. 6.8 Timing Requirements
    9. 6.9 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Analog Input
        1. 8.3.1.1 Analog Input Bandwidth
        2. 8.3.1.2 Analog Front End Design
          1. 8.3.1.2.1 Sampling Glitch Filter Design
          2. 8.3.1.2.2 Analog Input Termination and DC Bias
            1. 8.3.1.2.2.1 AC-Coupling
            2. 8.3.1.2.2.2 DC-Coupling
      2. 8.3.2 Clock Input
        1. 8.3.2.1 Single Ended vs Differential Clock Input
      3. 8.3.3 Voltage Reference
        1. 8.3.3.1 Internal voltage reference
        2. 8.3.3.2 External voltage reference (VREF)
        3. 8.3.3.3 External voltage reference with internal buffer (REFBUF)
      4. 8.3.4 Digital Down Converter
        1. 8.3.4.1 DDC MUX
        2. 8.3.4.2 Digital Filter Operation
        3. 8.3.4.3 FS/4 Mixing with Real Output
        4. 8.3.4.4 Numerically Controlled Oscillator (NCO) and Digital Mixer
        5. 8.3.4.5 Decimation Filter
        6. 8.3.4.6 SYNC
        7. 8.3.4.7 Output Formatting with Decimation
      5. 8.3.5 Digital Interface
        1. 8.3.5.1 Output Formatter
        2. 8.3.5.2 Output Interface/Mode Configuration
          1. 8.3.5.2.1 Configuration Example
        3. 8.3.5.3 Output Data Format
      6. 8.3.6 Test Pattern
    4. 8.4 Device Functional Modes
      1. 8.4.1 Normal operation
      2. 8.4.2 Power Down Options
    5. 8.5 Programming
      1. 8.5.1 Configuration using PINs only
      2. 8.5.2 Configuration using the SPI interface
        1. 8.5.2.1 Register Write
        2. 8.5.2.2 Register Read
    6. 8.6 Register Maps
      1. 8.6.1 Detailed Register Description
  9. 9 Application Information Disclaimer
    1. 9.1 Typical Application
      1. 9.1.1 Design Requirements
      2. 9.1.2 Detailed Design Procedure
        1. 9.1.2.1 Input Signal Path
        2. 9.1.2.2 Sampling Clock
        3. 9.1.2.3 Voltage Reference
      3. 9.1.3 Application Curves
    2. 9.2 Initialization Set Up
      1. 9.2.1 Register Initialization During Operation
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Support Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

6.7 Electrical Characteristics - AC Specifications

Typical values are over the operating free-air temperature range, at TA = 25°C, full temperature range is TMIN = –40°C to TMAX = 105°C, ADC sampling rate = 125 MSPS, 50% clock duty cycle, AVDD = IOVDD = 1.8 V, 1.6 V external reference, and –1-dBFS differential input, unless otherwise noted
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
NSD Noise Spectral Density fIN = 5 MHz, AIN = -20 dBFS -156.9 dBFS/Hz
SNR Signal to noise ratio fIN = 5 MHz 72 77.5 dBFS
fIN = 5 MHz, AIN = -20 dBFS 78.9 dBFS
fIN = 10 MHz 77.6
fIN = 40 MHz 76.9
fIN = 70 MHz 75.5
fIN = 100 MHz 74.1
SINAD Signal to noise and distortion ratio fIN = 5 MHz 75.7 dBFS
fIN = 10 MHz 74.2
fIN = 40 MHz 72.6
fIN = 70 MHz 71.3
fIN = 100 MHz 72.4
ENOB Effective number of bits fIN = 5 MHz 12.6 bit
fIN = 10 MHz 12.6
fIN = 40 MHz 12.5
fIN = 70 MHz 12.3
fIN = 100 MHz 12.0
THD Total Harmonic Distortion (First five harmonics) fIN = 5 MHz 71.5 80 dBc
fIN = 10 MHz 76
fIN = 40 MHz 74
fIN = 70 MHz 72
fIN = 100 MHz 76
HD2 Second Harmonic Distortion fIN = 5 MHz 77 84 dBc
fIN = 10 MHz 78
fIN = 40 MHz 75
fIN = 70 MHz 77
fIN = 100 MHz 79
HD3 Third Harmonic Distortion fIN = 5 MHz 73.5 84 dBc
fIN = 10 MHz 81
fIN = 40 MHz 88
fIN = 70 MHz 76
fIN = 100 MHz 81
Non HD2,3 Spur free dynamic range (excluding HD2 and HD3) fIN = 5 MHz 84 92 dBFS
fIN = 10 MHz 93
fIN = 40 MHz 89
fIN = 70 MHz 84
fIN = 100 MHz 86
IMD3 Two tone inter-modulation distortion f1 = 10 MHz, f2 = 12 MHz, AIN = -7 dBFS/tone 88 dBc