SBAS672E July   2014  – June 2022 ADC3221 , ADC3222 , ADC3223 , ADC3224

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
    1.     Device Comparison Table
  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 (1)
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics: General
    6. 6.6  Electrical Characteristics: ADC3221, ADC3222
    7. 6.7  Electrical Characteristics: ADC3223, ADC3224
    8. 6.8  AC Performance: ADC3221
    9. 6.9  AC Performance: ADC3222
    10. 6.10 AC Performance: ADC3223
    11. 6.11 AC Performance: ADC3224
    12. 6.12 Digital Characteristics
    13. 6.13 Timing Requirements: General
    14. 6.14 Timing Requirements: LVDS Output
    15. 6.15 Typical Characteristics: ADC3221
    16. 6.16 Typical Characteristics: ADC3222
    17. 6.17 Typical Characteristics: ADC3223
    18. 6.18 Typical Characteristics: ADC3224
    19. 6.19 Typical Characteristics: Common
    20. 6.20 Typical Characteristics: Contour
  7. 7 Parameter Measurement Information
    1. 7.1 Timing Diagrams
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Analog Inputs
      2. 8.3.2 Clock Input
        1. 8.3.2.1 Using the SYSREF Input
        2. 8.3.2.2 SNR and Clock Jitter
      3. 8.3.3 Digital Output Interface
        1. 8.3.3.1 One-Wire Interface: 12X Serialization
        2. 8.3.3.2 Two-Wire Interface: 6X Serialization
    4. 8.4 Device Functional Modes
      1. 8.4.1 Input Clock Divider
      2. 8.4.2 Chopper Functionality
      3. 8.4.3 Power-Down Control
        1. 8.4.3.1 Improving Wake-Up Time From Global Power-Down
      4. 8.4.4 Internal Dither Algorithm
    5. 8.5 Programming
      1. 8.5.1 Serial Interface
        1. 8.5.1.1 Register Initialization
          1. 8.5.1.1.1 Serial Register Write
          2. 8.5.1.1.2 Serial Register Readout
      2. 8.5.2 Register Initialization through SPI
    6. 8.6 Register Maps
      1. 8.6.1 Summary of Special Mode Registers
      2. 8.6.2 Serial Register Description
        1. 8.6.2.1  Register 01h
        2. 8.6.2.2  Register 03h
        3. 8.6.2.3  Register 04h
        4. 8.6.2.4  Register 05h
        5. 8.6.2.5  Register 06h
        6. 8.6.2.6  Register 07h
        7. 8.6.2.7  Register 09h
        8. 8.6.2.8  Register 0Ah
        9. 8.6.2.9  Register 0Bh
        10. 8.6.2.10 Register 0Eh
        11. 8.6.2.11 Register 0Fh
        12. 8.6.2.12 Register 13h
        13. 8.6.2.13 Register 15h
        14. 8.6.2.14 Register 25h
        15. 8.6.2.15 Register 27h
        16. 8.6.2.16 Register 41Dh
        17. 8.6.2.17 Register 422h
        18. 8.6.2.18 Register 434h
        19. 8.6.2.19 Register 439h
        20. 8.6.2.20 Register 51Dh
        21. 8.6.2.21 Register 522h
        22. 8.6.2.22 Register 534h
        23. 8.6.2.23 Register 539h
        24. 8.6.2.24 Register 608h
        25. 8.6.2.25 Register 70Ah
  9. 9 Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Driving Circuit Design: Low Input Frequencies
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curve
      2. 9.2.2 Driving Circuit Design: Input Frequencies Between 100 MHz to 230 MHz
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 Application Curve
      3. 9.2.3 Driving Circuit Design: Input Frequencies Greater than 230 MHz
        1. 9.2.3.1 Design Requirements
        2. 9.2.3.2 Detailed Design Procedure
        3. 9.2.3.3 Application Curve
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  10. 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
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

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

8.4.3.1 Improving Wake-Up Time From Global Power-Down

The device has an internal low-pass filter in the sampling clock path. This low-pass filter helps improve the aperture jitter of the device. However, in applications where input frequencies are < 200 MHz, noise from the aperture jitter does not dominate the overall SNR of the device. In such applications, the wake-up time from a global power-down can be reduced by bypassing the low-pass filter using the DIS CLK FILT register bit (write 80h to register address 70Ah). As shown in Table 8-3, setting the DIS CLK FILT bit improves the wake-up time from a global power-down from 85 µs to 55 µs.

Table 8-3 Wake-Up Time From Global Power-Down
DIS CLK FILT
REGISTER BIT		GLOBAL PDN REGISTER BITWAKE-UP TIME
TYPMAXUNIT
00→1→085140µs
10→1→05581µs