hi5766 Intersil Corporation, hi5766 Datasheet - Page 15

• Manufacturer Part Number: hi5766
• Description: 10-bit, 60msps A/d Converter
• Manufacturer: Intersil Corporation

where: V
V
amount the analog input signal is below full scale.
Signal To Noise and Distortion Ratio (SINAD)
SINAD is the ratio of the measured RMS signal to RMS sum
of all the other spectral components below the Nyquist
frequency, f
Signal To Noise Ratio (SNR)
SNR is the ratio of 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 below f
excluding the fundamental, the first five harmonics and DC.
Total Harmonic Distortion (THD)
THD is the ratio of the RMS sum of the first 5 harmonic
components to the RMS value of the fundamental input signal.
2nd and 3rd Harmonic Distortion
This is the ratio of the RMS value of the applicable harmonic
component to the RMS value of the fundamental input signal.
Spurious Free Dynamic Range (SFDR)
SFDR is the ratio of the fundamental RMS amplitude to the
RMS amplitude of the next largest spectral component in the
spectrum below f
Intermodulation Distortion (IMD)
Nonlinearities in the signal path will tend to generate
intermodulation products when two tones, f
present at the inputs. The ratio of the measured signal to the
distortion terms is calculated. The terms included in the
calculation are (f
(f
below full scale.
1
CORR
+2f
2
), (f
adjusts the SINAD, and hence the ENOB, for the
1
CORR
-2f
S
/2, excluding DC.
2
). The ADC is tested with each tone 6dB
S
1
= 0.5 dB.
+f
/2.
2
), (f
1
-f
2
), (2f
15
1
), (2f
2
), (2f
1
1
and f
+f
2
), (2f
2
S
, are
/2
1
-f
2
),
HI5766
Transient Response
Transient response is measured by providing a full scale
transition to the analog input of the ADC and measuring the
number of cycles it takes for the output code to settle within
10-bit accuracy.
Over-Voltage Recovery
Over-Voltage Recovery is measured by providing a full scale
transition to the analog input of the ADC which overdrives
the input by 200mV, and measuring the number of cycles it
takes for the output code to settle within 10-bit accuracy.
Full Power Input Bandwidth (FPBW)
Full power input bandwidth is the analog input 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 an amplitude which swings from
-FS to +FS. The bandwidth given is measured at the
specified sampling frequency.
Video Definitions
Differential Gain and Differential Phase are two commonly
found video specifications for characterizing the distortion of
a chrominance signal as it is offset through the input voltage
range of an ADC.
Differential Gain (DG)
Differential Gain is the peak difference in chrominance
amplitude (in percent) relative to the reference burst.
Differential Phase (DP)
Differential Phase is the peak difference in chrominance
phase (in degrees) relative to the reference burst.