SBASB68 August   2025 ADS9803

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
    6. 5.6 Timing Requirements
    7. 5.7 Switching Characteristics
    8. 5.8 Timing Diagrams
    9. 5.9 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Analog Inputs
        1. 6.3.1.1 Input Clamp Protection Circuit
        2. 6.3.1.2 Programmable Gain Amplifier (PGA)
        3. 6.3.1.3 Wide-Common-Mode Voltage Rejection Circuit
      2. 6.3.2 ADC Transfer Function
      3. 6.3.3 ADC Sampling Clock Input
      4. 6.3.4 Synchronizing Multiple ADCs
      5. 6.3.5 Reference Voltage
      6. 6.3.6 Data Interface
        1. 6.3.6.1 Data Clock Output
        2. 6.3.6.2 ADC Output Data Randomizer
        3. 6.3.6.3 Data Averaging
        4. 6.3.6.4 Test Patterns for Data Interface
          1. 6.3.6.4.1 Fixed Pattern
          2. 6.3.6.4.2 Digital Ramp
          3. 6.3.6.4.3 Alternating Test Pattern
    4. 6.4 Device Functional Modes
      1. 6.4.1 Reset
      2. 6.4.2 Power-Down
      3. 6.4.3 Initialization Sequence
      4. 6.4.4 Normal Operation
      5. 6.4.5 Speed-Boost Mode
    5. 6.5 Programming
      1. 6.5.1 Register Write
      2. 6.5.2 Register Read
      3. 6.5.3 Multiple Devices in a Daisy-Chain Topology for SPI Configuration
        1. 6.5.3.1 Register Write With Daisy-Chain
        2. 6.5.3.2 Register Read With Daisy-Chain
  8. 7 Register Map
    1. 7.1 Register Bank 0
    2. 7.2 Register Bank 1
    3. 7.3 Register Bank 2
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Parametric Measurement Unit (PMU)
      2. 8.2.2 Design Requirements
      3. 8.2.3 Detailed Design Procedure
      4. 8.2.4 Application Curve
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

5.9 Typical Characteristics

ADS9801 ADS9803 Typical INL
 
Figure 5-6 Typical INL
ADS9801 ADS9803 Typical FFT With Low-Bandwidth LPF, RANGE = ±5V
SNR = 89.1dBFS, THD = –116dB at fIN = 2kHz
Figure 5-8 Typical FFT With Low-Bandwidth LPF,
RANGE = ±5V
ADS9801 ADS9803 Typical FFT With Low-Bandwidth LPF,RANGE = ±10V
SNR = 90.2dBFS, THD = –114dB at fIN = 2kHz
Figure 5-10 Typical FFT With Low-Bandwidth LPF,
RANGE = ±10V
ADS9801 ADS9803 Low-Noise LPF Frequency Response Across Input Ranges
Typical bandwidth (–3dB) = 22.7kHz
Figure 5-12 Low-Noise LPF Frequency Response Across Input Ranges
ADS9801 ADS9803 SNR, SINAD, and THD vs Input Signal Frequency
Low-bandwidth LPF and RANGE = ±5V
Figure 5-14 SNR, SINAD, and THD vs Input Signal Frequency
ADS9801 ADS9803 SNR, SINAD, and THD vs Input Signal Frequency
Wide-bandwidth LPF and RANGE = ±5V
Figure 5-16 SNR, SINAD, and THD vs Input Signal Frequency
ADS9801 ADS9803 THD vs Input Signal Frequency Across External Source Impedance
Low-bandwidth LPF and RANGE = ±5V
Figure 5-18 THD vs Input Signal Frequency Across External Source Impedance
ADS9801 ADS9803 THD vs Input Signal Frequency Across External Source Impedance
Wide-bandwidth LPF and RANGE = ±5V
Figure 5-20 THD vs Input Signal Frequency Across External Source Impedance
ADS9801 ADS9803 Offset Error vs Temperature, RANGE = ±5V
Low bandwidth and wide bandwidth
Figure 5-22 Offset Error vs Temperature, RANGE = ±5V
ADS9801 ADS9803 Gain Error vs Temperature, RANGE = ±5V
Low bandwidth and wide bandwidth 
Figure 5-24 Gain Error vs Temperature, RANGE = ±5V
ADS9801 ADS9803 THD vs Input Signal Amplitude Across Input Signal Frequency, RANGE = ±5V
 
Figure 5-26 THD vs Input Signal Amplitude Across Input Signal Frequency, RANGE = ±5V
ADS9801 ADS9803 INL vs Temperature
 
Figure 5-28 INL vs Temperature
ADS9801 ADS9803 REFIO vs Temperature
 
Figure 5-30 REFIO vs Temperature
ADS9801 ADS9803 Supply Currents and Total Power Dissipation vs Temperature
 
Figure 5-32 Supply Currents and Total Power Dissipation vs Temperature
ADS9801 ADS9803 Typical DNL With Low-Noise LPF
 
Figure 5-7 Typical DNL With Low-Noise LPF
ADS9801 ADS9803 Typical FFT With Wide-Bandwidth LPF,RANGE = ±5V
SNR = 79.7dBFS, THD = –117.3dB at fIN = 2kHz
Figure 5-9 Typical FFT With Wide-Bandwidth LPF,
RANGE = ±5V
ADS9801 ADS9803 Typical FFT With Wide-Bandwidth LPF,RANGE = ±10V
SNR = 81.6dBFS, THD = –116dB at fIN = 2kHz
Figure 5-11 Typical FFT With Wide-Bandwidth LPF,
RANGE = ±10V
ADS9801 ADS9803 Wide-Bandwidth LPF Frequency Response Across Input Ranges
 
Figure 5-13 Wide-Bandwidth LPF Frequency Response Across Input Ranges
ADS9801 ADS9803 SNR, SINAD, and THD vs Input Signal Frequency
Low-bandwidth LPF and RANGE = ±10V
Figure 5-15 SNR, SINAD, and THD vs Input Signal Frequency
ADS9801 ADS9803 SNR, SINAD, and THD vs Input Signal Frequency
Wide-bandwidth LPF and RANGE = ±10V
Figure 5-17 SNR, SINAD, and THD vs Input Signal Frequency
ADS9801 ADS9803 THD vs Input Signal Frequency Across External Source Impedance
Low-bandwidth LPF and RANGE = ±10V
Figure 5-19 THD vs Input Signal Frequency Across External Source Impedance
ADS9801 ADS9803 THD vs Input Signal Frequency Across External Source Impedance
Wide-bandwidth LPF and RANGE = ±10V
Figure 5-21 THD vs Input Signal Frequency Across External Source Impedance
ADS9801 ADS9803 Offset Error vs Temperature, RANGE = ±10V
Low bandwidth and wide bandwidth
Figure 5-23 Offset Error vs Temperature, RANGE = ±10V
ADS9801 ADS9803 Gain Error vs Temperature, RANGE = ±10V
Low bandwidth and wide bandwidth
Figure 5-25 Gain Error vs Temperature, RANGE = ±10V
ADS9801 ADS9803 THD vs Input Signal Amplitude Across Input Signal Frequency, RANGE = ±10V
 
Figure 5-27 THD vs Input Signal Amplitude Across Input Signal Frequency, RANGE = ±10V
ADS9801 ADS9803 DNL vs Temperature
 
Figure 5-29 DNL vs Temperature
ADS9801 ADS9803 REFOUT_2V5 vs Temperature
 
Figure 5-31 REFOUT_2V5 vs Temperature