參數(shù)資料
型號： EVAL-AD7763EDZ
廠商： Analog Devices Inc
文件頁數(shù)： 3/33頁
文件大小： 0K
描述： BOARD EVAL CONTROL AD7763
標準包裝： 1
ADC 的數(shù)量： 1
位數(shù)： 24
采樣率（每秒）： 625k
數(shù)據(jù)接口： 并聯(lián)
輸入范圍： ±3.25 Vpp
在以下條件下的電源（標準）： 955.5mW @ 625kSPS
工作溫度： -40°C ~ 85°C
已用 IC / 零件： AD7763
已供物品： 板，CD
AD7763
Data Sheet
Rev. B | Page 10 of 32
TERMINOLOGY
Signal-to-Noise Ratio (SNR)
The ratio of the rms value of the actual input signal to the rms
sum of all other spectral components below the Nyquist fre-
quency, excluding harmonics and dc. The value for SNR is
expressed in decibels.
Total Harmonic Distortion (THD)
The ratio of the rms sum of harmonics to the fundamental. For
the AD7763, it is defined as
( )
1
6
5
4
3
2
V
THD
2
log
20
dB
+
=
where:
V1 is the rms amplitude of the fundamental.
V2, V3, V4, V5, and V6 are the rms amplitudes of the second
to the sixth harmonic.
Nonharmonic Spurious-Free Dynamic Range (SFDR)
The ratio of the rms signal amplitude to the rms value of the
peak spurious spectral component, excluding harmonics.
Dynamic Range
The ratio of the rms value of the full scale to the rms noise
measured with the inputs shorted together. The value for
dynamic range is expressed in decibels.
Integral Nonlinearity (INL)
The maximum deviation from a straight line passing through
the endpoints of the ADC transfer function.
Differential Nonlinearity (DNL)
The difference between the measured and the ideal 1 LSB
change between any two adjacent codes in the ADC.
Zero Error
The difference between the ideal midscale input voltage (0 V)
and the actual voltage producing the midscale output code.
Zero Error Drift
The change in the actual zero error value due to a temperature
change of 1°C. It is expressed as a percentage of full scale at room
temperature.
Gain Error
The first transition (from 100…000 to 100…001) should occur
for an analog voltage 1/2 LSB above the nominal negative full
scale. The last transition (from 011…110 to 011…111) should
occur for an analog voltage 1 1/2 LSB below the nominal full
scale. The gain error is the deviation of the difference between
the actual level of the last transition and the actual level of the
first transition, from the difference between the ideal levels.
Gain Error Drift
The change in the actual gain error value due to a temperature
change of 1°C. It is expressed as a percentage of full scale at
room temperature.
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