HI5714/4CBZ Intersil, HI5714/4CBZ Datasheet - Page 12

• Manufacturer Part Number: HI5714/4CBZ
• Description: IC ADC 8-BIT 40MSPS 24-SOIC
• Manufacturer: Intersil

Specifications of HI5714/4CBZ

• Number Of Bits: 8
• Sampling Rate (per Second): 40M
• Data Interface: Parallel
• Number Of Converters: 1
• Power Dissipation (max): 375mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (0.300", 7.50mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Dynamic Performance Definitions
Fast Fourier Transform (FFT) techniques are used to
evaluate the dynamic performance of the HI5714. A low
distortion sine wave is applied to the input, it is sampled, and
the output is stored in RAM. The data is then transformed
into the frequency domain with a 2048 point FFT and
analyzed to evaluate the dynamic performance of the A/D.
The sine wave input to the part is 0.5dB down from full scale
for these tests. The distortion numbers are quoted in dBc
(decibels with respect to carrier) and DO NOT include any
correction factors for normalizing to full scale.
Signal-to-Noise Ratio (SNR)
SNR is the measured RMS signal to RMS noise at a
specified input and sampling frequency. The noise is the
RMS sum of all of the spectral components except the
fundamental and the first five harmonics.
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HI5714
Signal-to-Noise + Distortion Ratio (SINAD)
SINAD is the measured RMS signal to RMS sum of all other
spectral components below the Nyquist frequency excluding
DC.
Effective Number Of Bits (ENOB)
The effective number of bits (ENOB) is derived from the
SINAD data. ENOB is calculated from:
ENOB = (SINAD - 1.76) / 6.02
2nd and 3rd Harmonic Distortion
This is the ratio of the RMS value of the 2nd and 3rd
harmonic component respectively to the RMS value of the
measured input signal.
Full Power Input Bandwidth
Full power bandwidth is the frequency at which the
amplitude of the digitally reconstructed output has
decreased 3dB below the amplitude of the input sine wave.
The input sine wave has a peak-to-peak amplitude equal to
the difference between the top reference voltage input and
the bottom reference voltage input. The bandwidth given is
measured at the specified sampling frequency.