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參數(shù)資料
| 型號： | AD80066KRSZRL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 5/21頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DSP CTLR 16BIT 28SSOP |
| 標(biāo)準(zhǔn)包裝： | 1,500 |
| 類型： | 信號處理器 |
| 輸入類型： | 模擬 |
| 輸出類型： | 數(shù)字 |
| 接口： | 串行 |
| 電流 - 電源： | 95mA |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SSOP（0.209"，5.30mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-SSOP |
| 包裝： | 帶卷 (TR) |
AD80066
Rev. A | Page 12 of 20
TERMINOLOGY
Integral Nonlinearity (INL)
Integral nonlinearity error refers to the deviation of each
individual code from a line drawn from zero scale through
positive full scale. The point used as zero scale occurs LSB
before the first code transition. Positive full scale is defined as a
level 1 LSB beyond the last code transition. The deviation is
measured from the middle of each particular code to the true
straight line.
Differential Nonlinearity (DNL)
An ideal ADC exhibits code transitions that are exactly 1 LSB
apart. DNL is the deviation from this ideal value; therefore, every
code must have a finite width. No missing codes guaranteed to
16-bit resolution indicates that all 65,536 codes must be present
over all operating ranges.
Offset Error
The first ADC code transition should occur at a level LSB above
the nominal zero-scale voltage. The offset error is the deviation
of the actual first code transition level from the ideal level.
Gain Error
The last code transition should occur for an analog value
1 LSB below the nominal full-scale voltage. Gain error is the
deviation of the actual difference between the first and last code
transitions and the ideal difference between the first and last
code transitions.
Input-Referred Noise
The rms output noise is measured using histogram techniques. The
standard deviation of the ADC output codes is calculated in LSB
and converted to an equivalent voltage, using the relationship
1 LSB = 1.5 V/65,536 = 23 μV. The noise is then referred to the
input of the AD80066 by dividing by the PGA gain.
Channel-to-Channel Crosstalk
In an ideal 3-channel system, the signal in one channel does not
influence the signal level of another channel. The channel-to-
channel crosstalk specification is a measure of the change that
occurs in one channel as the other two channels are varied. In
the AD80066, one channel is grounded and the other two channels
are exercised with full-scale input signals. The change in the output
codes from the first channel is measured and compared with the
result when all three channels are grounded. The difference is
the channel-to-channel crosstalk, stated in LSB.
Aperture Delay
The aperture delay is the delay that occurs from when a sampling
edge is applied to the AD80066 until the actual sample of the
input signal is held. Both CDSCLK1 and CDSCLK2 sample the
input signal during the transition from high to low; therefore,
the aperture delay is measured from each falling edge of the
clock to when the internal sample is taken.
Power Supply Rejection
The power supply rejection specifies the maximum full-scale
change that occurs from the initial value when the supplies are
varied over the specified limits.
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