SBAS621B July   2013  – September 2015 ADS42JB46

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Electrical Characteristics: ADS42JB46
    6. 7.6  Electrical Characteristics: General
    7. 7.7  Timing Characteristics
    8. 7.8  Digital Characteristics
    9. 7.9  Reset Timing
    10. 7.10 Serial Interface Timing
    11. 7.11 Typical Characteristics: ADS42JB46
    12. 7.12 Typical Characteristics: Contour
      1. 7.12.1 Spurious-Free Dynamic Range (SFDR)
      2. 7.12.2 Signal-to-Noise Ratio (SNR)
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Digital Gain
      2. 8.3.2 Overrange Indication
      3. 8.3.3 Input Clock Divider
      4. 8.3.4 Pin Controls
    4. 8.4 Device Functional Modes
      1. 8.4.1 JESD204B Interface
        1. 8.4.1.1 JESD204B Initial Lane Alignment (ILA)
        2. 8.4.1.2 JESD204B Test Patterns
        3. 8.4.1.3 JESD204B Frame Assembly
        4. 8.4.1.4 JESD Link Configuration
          1. 8.4.1.4.1 Configuration for 2-Lane (20x) SERDES Mode
          2. 8.4.1.4.2 Configuration for 4-Lane (10x) SERDES Mode
        5. 8.4.1.5 CML Outputs
    5. 8.5 Programming
      1. 8.5.1 Serial Interface
        1. 8.5.1.1 Register Initialization
        2. 8.5.1.2 Serial Register Write
        3. 8.5.1.3 Serial Register Readout
    6. 8.6 Register Maps
      1. 8.6.1 Summary of Serial Interface Registers
      2. 8.6.2 Description of Serial Interface Registers
        1. 8.6.2.1  Register Address 06
        2. 8.6.2.2  Register Address 07
        3. 8.6.2.3  Register Address 08
        4. 8.6.2.4  Register Address 0B
        5. 8.6.2.5  Register Address 0C
        6. 8.6.2.6  Register Address 0D
        7. 8.6.2.7  Register Address 0E
        8. 8.6.2.8  Register Address 0F
        9. 8.6.2.9  Register Address 10
        10. 8.6.2.10 Register Address 11
        11. 8.6.2.11 Register Address 12
        12. 8.6.2.12 Register Address 13
        13. 8.6.2.13 Register Address 1F
        14. 8.6.2.14 Register Address 26
        15. 8.6.2.15 Register Address 27
        16. 8.6.2.16 Register Address 2B
        17. 8.6.2.17 Register Address 2C
        18. 8.6.2.18 Register Address 2D
        19. 8.6.2.19 Register Address 30
        20. 8.6.2.20 Register Address 36
        21. 8.6.2.21 Register Address 37
        22. 8.6.2.22 Register Address 38
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Analog Input
          1. 9.2.2.1.1 Drive Circuit Requirements
          2. 9.2.2.1.2 Driving Circuit
        2. 9.2.2.2 Clock Input
        3. 9.2.2.3 SNR and Clock Jitter
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Dual-Channel ADCs
  • 14-Bit Resolution
  • Maximum Clock Rate: 160 MSPS
  • JESD204B Serial Interface
    • Subclass 0, 1, 2 Compliant
    • Up to 3.125 Gbps
    • Two- and Four-Lane Support
  • Analog Input Buffer with High-Impedance Input
  • Flexible Input Clock Buffer:
    Divide-by-1, -2, and -4
  • Differential Full-Scale Input: 2 VPP and 2.5 VPP
    (Register Programmable)
  • Package: 9-mm × 9-mm QFN-64
  • Power Dissipation: 679 mW/Ch
  • Aperture Jitter: 85 fS rms
  • Internal Dither
  • Channel Isolation: 100 dB
  • Performance:
    • fIN = 170 MHz at 2 VPP, –1 dBFS
      • SNR: 72.9 dBFS
      • SFDR: 90 dBc for HD2, HD3
      • SFDR: 100 dBc for Non HD2, HD3
    • fIN = 170 MHz at 2.5 VPP, –1 dBFS
      • SNR: 74.2 dBFS
      • SFDR: 84 dBc for HD2, HD3 and
        95 dBc for Non HD2, HD3

2 Applications

  • Communication and Cable Infrastructure
  • Multi-Carrier, Multimode Cellular Receivers
  • Radar and Smart Antenna Arrays
  • Broadband Wireless
  • Test and Measurement Systems
  • Software-Defined and Diversity Radios
  • Microwave and Dual-Channel I/Q Receivers
  • Repeaters
  • Power Amplifier Linearization

3 Description

The ADS42JB46 is a high-linearity, dual-channel, 14-bit, 160-MSPS, analog-to-digital converter (ADC). This device supports the JESD204B serial interface with data rates up to 3.125 Gbps. The buffered analog input provides uniform input impedance across a wide frequency range while minimizing sample-and-hold glitch energy, thus making driving analog inputs up to very high input frequencies easy. A sampling clock divider allows more flexibility for system clock architecture design. The device employs internal dither algorithms to provide excellent spurious-free dynamic range (SFDR) over a large input frequency range.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
ADS42JB46 VQFN (64) 9.00 mm × 9.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

ADS42JB46 fbd_las900.gif

FFT for 170-MHz Input Signal Sampled at 160 MSPS

ADS42JB46 G002_SBAS621.png