SBAS860 August   2017 ADC31RF80

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  AC Performance Characteristics: fS = 2949.12 MSPS
    7. 6.7  AC Performance Characteristics: fS = 2457.6 MSPS (Performance Optimized for F + A + D Band)
    8. 6.8  AC Performance Characteristics: fS = 2457.6 MSPS (Performance Optimized for F + A Band)
    9. 6.9  Digital Requirements
    10. 6.10 Timing Requirements
    11. 6.11 Typical Characteristics
  7. 7 Parameter Measurement Information
    1. 7.1 Input Clock Diagram
  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
        1. 8.3.1.1 Input Clamp Circuit
      2. 8.3.2  Clock Input
      3. 8.3.3  SYSREF Input
        1. 8.3.3.1 Using SYSREF
        2. 8.3.3.2 Frequency of the SYSREF Signal
      4. 8.3.4  DDC Block
        1. 8.3.4.1 Operating Mode: Receiver
        2. 8.3.4.2 Operating Mode: Wide-Bandwidth Observation Receiver
        3. 8.3.4.3 Decimation Filters
          1. 8.3.4.3.1  Divide-by-4
          2. 8.3.4.3.2  Divide-by-6
          3. 8.3.4.3.3  Divide-by-8
          4. 8.3.4.3.4  Divide-by-9
          5. 8.3.4.3.5  Divide-by-10
          6. 8.3.4.3.6  Divide-by-12
          7. 8.3.4.3.7  Divide-by-16
          8. 8.3.4.3.8  Divide-by-18
          9. 8.3.4.3.9  Divide-by-20
          10. 8.3.4.3.10 Divide-by-24
          11. 8.3.4.3.11 Divide-by-32
          12. 8.3.4.3.12 Latency With Decimation Options
        4. 8.3.4.4 Numerically-Controlled Oscillators (NCOs) and Mixers
      5. 8.3.5  NCO Switching
      6. 8.3.6  SerDes Transmitter Interface
      7. 8.3.7  Eye Diagrams
      8. 8.3.8  Alarm Outputs: Power Detectors for AGC Support
        1. 8.3.8.1 Absolute Peak Power Detector
        2. 8.3.8.2 Crossing Detector
        3. 8.3.8.3 RMS Power Detector
        4. 8.3.8.4 GPIO AGC MUX
      9. 8.3.9  Power-Down Mode
      10. 8.3.10 ADC Test Pattern
        1. 8.3.10.1 Digital Block
        2. 8.3.10.2 Transport Layer
        3. 8.3.10.3 Link Layer
    4. 8.4 Device Functional Modes
      1. 8.4.1 Device Configuration
      2. 8.4.2 JESD204B Interface
        1. 8.4.2.1 JESD204B Initial Lane Alignment (ILA)
        2. 8.4.2.2 JESD204B Frame Assembly
        3. 8.4.2.3 JESD204B Frame Assembly with Decimation (Single-Band DDC): Complex Output
        4. 8.4.2.4 JESD204B Frame Assembly with Decimation (Single-Band DDC): Real Output
        5. 8.4.2.5 JESD204B Frame Assembly with Decimation (Single-Band DDC): Real Output
        6. 8.4.2.6 JESD204B Frame Assembly with Decimation (Dual-Band DDC): Complex Output
        7. 8.4.2.7 JESD204B Frame Assembly with Decimation (Dual-Band DDC): Real Output
      3. 8.4.3 Serial Interface
        1. 8.4.3.1 Serial Register Write: Analog Bank
        2. 8.4.3.2 Serial Register Readout: Analog Bank
        3. 8.4.3.3 Serial Register Write: Digital Bank
        4. 8.4.3.4 Serial Register Readout: Digital Bank
        5. 8.4.3.5 Serial Register Write: Decimation Filter and Power Detector Pages
    5. 8.5 Register Maps
      1. 8.5.1  Example Register Writes
      2. 8.5.2  Register Descriptions
        1. 8.5.2.1 General Registers
          1. 8.5.2.1.1 Register 000h (address = 000h), General Registers
          2. 8.5.2.1.2 Register 002h (address = 002h), General Registers
          3. 8.5.2.1.3 Register 003h (address = 003h), General Registers
          4. 8.5.2.1.4 Register 004h (address = 004h), General Registers
          5. 8.5.2.1.5 Register 010h (address = 010h), General Registers
          6. 8.5.2.1.6 Register 011h (address = 011h), General Registers
          7. 8.5.2.1.7 Register 012h (address = 012h), General Registers
      3. 8.5.3  Master Page (M = 0)
        1. 8.5.3.1 Register 020h (address = 020h), Master Page
        2. 8.5.3.2 Register 032h (address = 032h), Master Page
        3. 8.5.3.3 Register 039h (address = 039h), Master Page
        4. 8.5.3.4 Register 03Ch (address = 03Ch), Master Page
        5. 8.5.3.5 Register 05Ah (address = 05Ah), Master Page
        6. 8.5.3.6 Register 03Dh (address = 3Dh), Master Page
        7. 8.5.3.7 Register 057h (address = 057h), Master Page
        8. 8.5.3.8 Register 058h (address = 058h), Master Page
      4. 8.5.4  ADC Page (FFh, M = 0)
        1. 8.5.4.1 Register 03Fh (address = 03Fh), ADC Page
        2. 8.5.4.2 Register 042h (address = 042h), ADC Page
      5. 8.5.5  Digital Function Page (610000h, M = 1)
        1. 8.5.5.1 Register A6h (address = 0A6h), Digital Function Page
      6. 8.5.6  Offset Corr Page (610000h, M = 1)
        1. 8.5.6.1 Register 034h (address = 034h), Offset Corr Page
        2. 8.5.6.2 Register 068h (address = 068h), Offset Corr Page
      7. 8.5.7  Digital Gain Page (610005h, M = 1)
        1. 8.5.7.1 Register 0A6h (address = 0A6h), Digital Gain Page
      8. 8.5.8  Main Digital Page (680000h, M = 1)
        1. 8.5.8.1  Register 000h (address = 000h), Main Digital Page
        2. 8.5.8.2  Register 0A2h (address = 0A2h), Main Digital Page
        3. 8.5.8.3  Register 0A5h (address = 0A5h), Main Digital Page
        4. 8.5.8.4  Register 0A9h (address = 0A9h), Main Digital Page
        5. 8.5.8.5  Register 0B0h (address = 0B0h), Main Digital Page
        6. 8.5.8.6  Register 0B1h (address = 0B1h), Main Digital Page
        7. 8.5.8.7  Register 0B2h (address = 0B2h), Main Digital Page
        8. 8.5.8.8  Register 0B3h (address = 0B3h), Main Digital Page
        9. 8.5.8.9  Register 0B4h (address = 0B4h), Main Digital Page
        10. 8.5.8.10 Register 0B5h (address = 0B5h), Main Digital Page
        11. 8.5.8.11 Register 0B6h (address = 0B6h), Main Digital Page
        12. 8.5.8.12 Register 0B7h (address = 0B7h), Main Digital Page
        13. 8.5.8.13 Register 0B8h (address = 0B8h), Main Digital Page
        14. 8.5.8.14 Register 0B9h (address = 0B9h), Main Digital Page
        15. 8.5.8.15 Register 0BAh (address = 0BAh), Main Digital Page
        16. 8.5.8.16 Register 0BBh (address = 0BBh), Main Digital Page
      9. 8.5.9  JESD Digital Page (6900h, M = 1)
        1. 8.5.9.1  Register 001h (address = 001h), JESD Digital Page
        2. 8.5.9.2  Register 002h (address = 002h ), JESD Digital Page
        3. 8.5.9.3  Register 003h (address = 003h), JESD Digital Page
        4. 8.5.9.4  Register 004h (address = 004h), JESD Digital Page
        5. 8.5.9.5  Register 006h (address = 006h), JESD Digital Page
        6. 8.5.9.6  Register 007h (address = 007h), JESD Digital Page
        7. 8.5.9.7  Register 016h (address = 016h), JESD Digital Page
        8. 8.5.9.8  Register 017h (address = 017h), JESD Digital Page
        9. 8.5.9.9  Register 032h-035h (address = 032h-035h), JESD Digital Page
        10. 8.5.9.10 Register 036h (address = 036h), JESD Digital Page
        11. 8.5.9.11 Register 037h (address = 037h), JESD Digital Page
        12. 8.5.9.12 Register 03Ch (address = 03Ch), JESD Digital Page
        13. 8.5.9.13 Register 03Eh (address = 03Eh), JESD Digital Page
      10. 8.5.10 Decimation Filter Page
        1. 8.5.10.1  Register 000h (address = 000h), Decimation Filter Page
        2. 8.5.10.2  Register 001h (address = 001h), Decimation Filter Page
        3. 8.5.10.3  Register 002h (address = 2h), Decimation Filter Page
        4. 8.5.10.4  Register 005h (address = 005h), Decimation Filter Page
        5. 8.5.10.5  Register 007h (address = 007h), Decimation Filter Page
        6. 8.5.10.6  Register 008h (address = 008h), Decimation Filter Page
        7. 8.5.10.7  Register 009h (address = 009h), Decimation Filter Page
        8. 8.5.10.8  Register 00Ah (address = 00Ah), Decimation Filter Page
        9. 8.5.10.9  Register 00Bh (address = 00Bh), Decimation Filter Page
        10. 8.5.10.10 Register 00Ch (address = 00Ch), Decimation Filter Page
        11. 8.5.10.11 Register 00Dh (address = 00Dh), Decimation Filter Page
        12. 8.5.10.12 Register 00Eh (address = 00Eh), Decimation Filter Page
        13. 8.5.10.13 Register 00Fh (address = 00Fh), Decimation Filter Page
        14. 8.5.10.14 Register 010h (address = 010h), Decimation Filter Page
        15. 8.5.10.15 Register 011h (address = 011h), Decimation Filter Page
        16. 8.5.10.16 Register 014h (address = 014h), Decimation Filter Page
        17. 8.5.10.17 Register 016h (address = 016h), Decimation Filter Page
        18. 8.5.10.18 Register 01Eh (address = 01Eh), Decimation Filter Page
        19. 8.5.10.19 Register 01Fh (address = 01Fh), Decimation Filter Page
        20. 8.5.10.20 Register 033h-036h (address = 033h-036h), Decimation Filter Page
        21. 8.5.10.21 Register 037h (address = 037h), Decimation Filter Page
        22. 8.5.10.22 Register 038h (address = 038h), Decimation Filter Page
        23. 8.5.10.23 Register 039h (address = 039h), Decimation Filter Page
        24. 8.5.10.24 Register 03Ah (address = 03Ah), Decimation Filter Page
      11. 8.5.11 Power Detector Page
        1. 8.5.11.1  Register 000h (address = 000h), Power Detector Page
        2. 8.5.11.2  Register 001h-002h (address = 001h-002h), Power Detector Page
        3. 8.5.11.3  Register 003h (address = 003h), Power Detector Page
        4. 8.5.11.4  Register 007h-00Ah (address = 007h-00Ah), Power Detector Page
        5. 8.5.11.5  Register 00Bh-00Ch (address = 00Bh-00Ch), Power Detector Page
        6. 8.5.11.6  Register 00Dh (address = 00Dh), Power Detector Page
        7. 8.5.11.7  Register 00Eh (address = 00Eh), Power Detector Page
        8. 8.5.11.8  Register 00Fh, 010h-012h, and 016h-019h (address = 00Fh, 010h-012h, and 016h-019h), Power Detector Page
        9. 8.5.11.9  Register 013h-01Ah (address = 013h-01Ah), Power Detector Page
        10. 8.5.11.10 Register 01Dh-01Eh (address = 01Dh-01Eh), Power Detector Page
        11. 8.5.11.11 Register 020h (address = 020h), Power Detector Page
        12. 8.5.11.12 Register 021h (address = 021h), Power Detector Page
        13. 8.5.11.13 Register 022h-025h (address = 022h-025h), Power Detector Page
        14. 8.5.11.14 Register 027h (address = 027h), Power Detector Page
        15. 8.5.11.15 Register 02Bh (address = 02Bh), Power Detector Page
        16. 8.5.11.16 Register 032h-035h (address = 032h-035h), Power Detector Page
        17. 8.5.11.17 Register 037h (address = 037h), Power Detector Page
        18. 8.5.11.18 Register 038h (address = 038h), Power Detector Page
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Start-Up Sequence
      2. 9.1.2 Hardware Reset
      3. 9.1.3 SNR and Clock Jitter
        1. 9.1.3.1 External Clock Phase Noise Consideration
      4. 9.1.4 Power Consumption in Different Modes
      5. 9.1.5 Using DC Coupling in the ADC31RF80
        1. 9.1.5.1 Bypassing the Offset Corrector Block
          1. 9.1.5.1.1 Effect of Temperature
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
        1. 9.2.1.1 Transformer-Coupled Circuits
      2. 9.2.2 Detailed Design Procedure
      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 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • 14-Bit, 3-GSPS ADC
  • Noise Floor: –155 dBFS/Hz
  • RF Input Supports Up To 4.0 GHz
  • Aperture Jitter: 90 fS
  • Spectral Performance (fIN = 900 MHz, –2 dBFS):
    • SNR: 61.4 dBFS
    • SFDR: 71-dBc HD2, HD3
    • SFDR: 76-dBc Worst Spur
  • Spectral Performance (fIN = 1.85 GHz, –2 dBFS):
    • SNR: 58.5 dBFS
    • SFDR: 65-dBc HD2, HD3
    • SFDR: 75-dBc Worst Spur
  • On-Chip Digital Down-Converters:
    • Up to 2 DDCs (Dual-Band Mode)
    • Up to 3 Independent NCOs per DDC
  • On-Chip Input Clamp for Overvoltage Protection
  • Programmable On-Chip Power Detectors With Alarm Pins for AGC Support
  • On-Chip Dither
  • On-Chip Input Termination
  • Input Full-Scale: 1.35 VPP
  • Support for Multi-Chip Synchronization
  • JESD204B Interface:
    • Subclass 1-Based Deterministic Latency
    • 4 Lanes Support at 12.5 Gbps
  • Total Power Dissipation: 3.2 W at 3.0 GSPS
  • 72-Pin VQFN Package (10 mm × 10 mm)

2 Applications

  • Multi-Carrier GSM Cellular Infrastructure Base Stations
  • Telecommunications Receivers
  • DPD Observation Receivers
  • Backhaul Receivers
  • RF Repeaters and Distributed Antenna Systems

3 Description

The ADC31RF80 device is a 14-bit, 3-GSPS, single-channel telecom receiver and feedback device that supports RF sampling with input frequencies up to 4 GHz and beyond. Designed for high signal-to-noise ratio (SNR), the ADC31RF80 delivers a noise spectral density of –155 dBFS/Hz as well as dynamic range over a large input frequency range. The buffered analog input with on-chip termination provides uniform input impedance across a wide frequency range and minimizes sample-and-hold glitch energy.

The ADC31RF80 comes with a dual-band, digital down-converter (DDC) with up to three independent, 16-bit numerically-controlled oscillators (NCOs) per DDC for phase-coherent frequency hopping. Additionally, the ADC is equipped with front-end peak and RMS power detectors and alarm functions to support external automatic gain control (AGC) algorithms.

The ADC31RF80 supports the JESD204B serial interface with subclass 1-based deterministic latency using data rates up to 12.5 Gbps with up to four lanes. The device is offered in a 72-pin VQFN package (10 mm × 10 mm) and supports the industrial temperature range (–40°C to +85°C).

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
ADC31RF80 VQFN (72) 10.00 mm × 10.00 mm
  1. For all available packages, see the package option addendum at the end of the data sheet.

Simplified Block Diagram

ADC31RF80 frontpage_sbas860.gif

4 Revision History

DATE REVISION NOTES
August 2017 * Initial release.