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參數(shù)資料
| 型號： | AD9203 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 10-Bit, 40 MSPS, 3 V, 74 mW A/D Converter |
| 中文描述： | 10位，40 MSPS的，3伏，74毫瓦的A / D轉換器 |
| 文件頁數(shù)： | 6/19頁 |
| 文件大小： | 216K |
| 代理商： | AD9203 |
REV. 0
AD9203
–6–
DEFINITIONS OF SPECIFICATIONS
INTEGRAL NONLINEARITY ERROR (INL)
Linearity error refers to the deviation of each individual code
from a line drawn from “negative full scale” through “positive
full scale.” The point used as “negative full scale” occurs
1/2 LSB before the first code transition. “Positive full scale” is
defined as a level 1 1/2 LSB beyond the last code transition.
The deviation is measured from the middle of each particular
code to the true straight line.
DIFFERENTIAL NONLINEARITY ERROR (DNL, NO
MISSING CODES)
An ideal ADC exhibits code transitions that are exactly 1 LSB
apart. DNL is the deviation from this ideal value. Guaranteed
no missing codes to 10-bit resolution indicates that all 1024
codes respectively, must be present over all operating ranges.
SIGNAL-TO-NOISE AND DISTORTION (S/N+D, SINAD)
RATIO
S/N+D is the ratio of the rms value of the measured input signal
to the rms sum of all other spectral components below the
Nyquist frequency, including harmonics but excluding dc.
The value for S/N+D is expressed in decibels.
EFFECTIVE NUMBER OF BITS (ENOB)
For a sine wave, SINAD can be expressed in terms of the num-
ber of bits. Using the following formula,
N
= (
SINAD
– 1.76)/6.02
it is possible to get a measure of performance expressed as
N
,
the effective number of bits.
Thus, effective number of bits for a device for sine wave inputs
at a given input frequency can be calculated directly from its
measured SINAD.
TOTAL HARMONIC DISTORTION (THD)
THD is the ratio of the rms sum of the first six harmonic
components to the rms value of the measured input signal and
is expressed as a percentage or in decibels.
SIGNAL-TO-NOISE RATIO (SNR)
SNR is the ratio of the rms value of the measured input signal
to the rms sum of all other spectral components below the
Nyquist frequency, excluding harmonics and dc. The value for
SNR is expressed in decibels.
SPURIOUS FREE DYNAMIC RANGE (SFDR)
The difference in dB between the rms amplitude of the input
signal and the peak spurious signal.
OFFSET ERROR
First transition should occur for an analog value 1/2 LSB above
–full scale. Offset error is defined as the deviation of the actual
transition from that point.
GAIN ERROR
The first code transition should occur at an analog value
1/2 LSB above –full scale. The last transition should occur for
an analog value 1 1/2 LSB below the +full scale. Gain error is
the deviation of the actual difference between first and last code
transitions and the ideal difference between first and last code
transitions.
POWER SUPPLY REJECTION
The specification shows the maximum change in full scale from
the value with the supply at the minimum limit to the value with
the supply at its maximum limit.
APERTURE JITTER
Aperture jitter is the variation in aperture delay for successive
samples and is manifested as noise on the input to the A/D.
APERTURE DELAY
Aperture delay is a measure of the Sample-and-Hold Amplifier
(SHA) performance and is measured from the rising edge of the
clock input to when the input signal is held for conversion.
PIPELINE DELAY (LATENCY)
The number of clock cycles between conversion initiation and
the associated output data being made available. New output
data is provided on every rising edge.
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| AD9203ARURL7 | 功能描述:IC ADC 10BIT 40MSPS 3V 28-TSSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
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| AD9203ARUZ | 制造商:Analog Devices 功能描述:IC ADC 10BIT 40MSPS 28TSSOP |
| AD9203ARUZ | 制造商:Analog Devices 功能描述:IC, ADC, 10BIT, 40MSPS, TSSOP-28 |
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