SLAS574B September   2013  – November 2025 ADS5474-SP

PRODUCTION DATA  

  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 Characteristics
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
      1. 6.1.1 Input Configuration
      2. 6.1.2 Clock Inputs
      3. 6.1.3 Digital Outputs
  8. 7 Application and Implementation
    1. 7.1 Power Supply Recommendations
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Definition of Specifications
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

8.1.1 Definition of Specifications

    Analog BandwidthThe analog input frequency at which the power of the fundamental is reduced by 3dB with respect to the low-frequency value.
    Aperture DelayThe delay in time between the rising edge of the input sampling clock and the actual time at which the sampling occurs.
    Aperture Uncertainty (Jitter)The sample-to-sample variation in aperture delay.
    Clock Pulse Duration/Duty CycleThe duty cycle of a clock signal is the ratio of the time the clock signal remains at a logic high (clock pulse duration) to the period of the clock signal, expressed as a percentage.
    Differential Nonlinearity (DNL)An ideal ADC exhibits code transitions at analog input values spaced exactly 1LSB apart. DNL is the deviation of any single step from this ideal value, measured in units of LSB.
    Common-Mode Rejection Ratio (CMRR)CMRR measures the ability to reject signals that are presented to both analog inputs simultaneously. The injected common-mode frequency level is translated into dBFS, the spur in the output FFT is measured in dBFS, and the difference is the CMRR in dB.
    Effective Number of Bits (ENOB)ENOB is a measure in units of bits of converter performance as compared to the theoretical limit based on quantization noise:
    Equation 3. E N O B = S I N A D - 1.76 ÷ 6.02
    Gain ErrorGain error is the deviation of the ADC actual input full-scale range from its ideal value, given as a percentage of the ideal input full-scale range.
    Integral Nonlinearity (INL)INL is the deviation of the ADC transfer function from a best-fit line determined by a least-squares curve fit of that transfer function. The INL at each analog input value is the difference between the actual transfer function and this best-fit line, measured in units of LSB.
    Offset ErrorOffset error is the deviation of output code from mid-code when both inputs are tied to common-mode.
    Power-Supply Rejection Ratio (PSRR)PSRR is a measure of the ability to reject frequencies present on the power supply. The injected frequency level is translated into dBFS, the spur in the output FFT is measured in dBFS, and the difference is the PSRR in dB. The measurement calibrates out the benefit of the board supply decoupling capacitors.
    Signal-to-Noise Ratio (SNR)SNR is the ratio of the power of the fundamental (PS) to the noise floor power (PN), excluding the power at dc and in the first five harmonics.
    Equation 4. S N R = 10 log 10 ⁡ P S P N

    SNR is either given in units of dBc (dB to carrier) when the absolute power of the fundamental is used as the reference, or dBFS (dB to full-scale) when the power of the fundamental is extrapolated to the converter full-scale range.

    Signal-to-Noise and Distortion (SINAD)SINAD is the ratio of the power of the fundamental (PS) to the power of all the other spectral components including noise (PN) and distortion (PD), but excluding dc.
    Equation 5. S I N A D = 10 log 10 ⁡ P S P N + P D

    SINAD is either given in units of dBc (dB to carrier) when the absolute power of the fundamental is used as the reference, or dBFS (dB to full-scale) when the power of the fundamental is extrapolated to the converter full-scale range.

    Temperature DriftTemperature drift (with respect to gain error and offset error) specifies the change from the value at the nominal temperature to the value at TMIN or TMAX. It is computed as the maximum variation the parameters over the whole temperature range divided by TMIN – TMAX.
    Total Harmonic Distortion (THD)THD is the ratio of the power of the fundamental (PS) to the power of the first five harmonics (PD).
    Equation 6. T H D = 10 log 10 ⁡ P S P D

    THD is typically given in units of dBc (dB to carrier).

    Two-Tone Intermodulation Distortion (IMD3)IMD3 is the ratio of the power of the fundamental (at frequencies ƒ1, ƒ2) to the power of the worst spectral component at either frequency 2ƒ1 – ƒ2 or 2ƒ2 – ƒ1). IMD3 is given in units of either dBc (dB to carrier) when the absolute power of the fundamental is used as the reference, or dBFS (dB to full-scale) when the power of the fundamental is extrapolated to the converter full-scale range.