AD7688BRMZ datasheet(8/28 Pages) AD

部品番号	AD7688BRMZ

部品情報	16-Bit, 1.5 LSB INL, 500 kSPS PulSAR??Differential ADC in MSOP/QFN

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AD7688

Rev. A | Page 8 of 28

TERMINOLOGY

Integral Nonlinearity Error (INL)

It 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 ½ LSB before the first

code transition. Positive full scale is defined as a level 1½ LSB

beyond the last code transition. The deviation is measured from

the middle of each code to the true straight line (Figure 25).

Differential Nonlinearity Error (DNL)

In an ideal ADC, code transitions are 1 LSB apart. DNL is the

maximum deviation from this ideal value. It is often specified in

terms of resolution for which no missing codes are guaranteed.

Zero Error

It is the difference between the ideal midscale voltage, that is, 0

V, from the actual voltage producing the midscale output code,

that is, 0 LSB.

Gain Error

The first transition (from 100 . . . 00 to 100 . . . 01) should occur

at a level ½ LSB above nominal negative full scale (−4.999924 V

for the ±5 V range). The last transition (from 011…10 to

011…11) should occur for an analog voltage 1½ LSB below the

nominal full scale (+4.999771 V for the ±5 V range.) 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.

Spurious-Free Dynamic Range (SFDR)

SFDR is the difference, in decibels (dB), between the rms

amplitude of the input signal and the peak spurious signal.

Effective Number of Bits (ENOB)

ENOB is a measurement of the resolution with a sine wave

input. It is related to S/(N+D) by the following formula

ENOB = (S/[N + D]dB − 1.76)/6.02

and is expressed in bits.

Total Harmonic Distortion (THD)

THD is the ratio of the rms sum of the first five harmonic

components to the rms value of a full-scale input signal and is

expressed in dB.

Dynamic Range

It is the ratio of the rms value of the full scale to the total rms

noise measured with the inputs shorted together. The value for

dynamic range is expressed in dB.

Signal-to-Noise Ratio (SNR)

SNR is the ratio of the rms value of the actual 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 dB.

Signal-to-(Noise + Distortion) Ratio (S/[N+D])

S/(N+D) is the ratio of the rms value of the actual 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 dB.

Aperture Delay

Aperature delay is the measure of the acquisition performance.

It is the time between the rising edge of the CNV input and

when the input signal is held for a conversion.

Transient Response

It is the time required for the ADC to accurately acquire its

input after a full-scale step function was applied.

同様の部品番号 - AD7688BRMZ

メーカー	部品番号	データシート	部品情報
Analog Devices	AD7688BRMZ	437Kb / 28P	16-Bit, 1.5 LSB INL, 500 kSPS PulSAR Differential ADC in MSOP/QFN Rev. A
	AD7688BRMZ	562Kb / 29P	16-Bit, 1.5 LSB INL, 500 kSPS PulSAR Differential ADC in MSOP/LFCSP
	AD7688BRMZRL7	437Kb / 28P	16-Bit, 1.5 LSB INL, 500 kSPS PulSAR Differential ADC in MSOP/QFN Rev. A
	AD7688BRMZRL7	562Kb / 29P	16-Bit, 1.5 LSB INL, 500 kSPS PulSAR Differential ADC in MSOP/LFCSP

More results

同様の説明 - AD7688BRMZ

メーカー	部品番号	データシート	部品情報
Analog Devices	AD7688BRMRL7	437Kb / 28P	16-Bit, 1.5 LSB INL, 500 kSPS PulSAR Differential ADC in MSOP/QFN Rev. A
	AD7693	526Kb / 24P	16-Bit, /-0.65 LSB INL, 500 kSPS PulSAR Differential ADC in MSOP/QFN Rev. PrB
	AD7687BRMZ	469Kb / 28P	16-Bit, 1.5 LSB INL, 250 kSPS PulSAR??Differential ADC in MSOP/QFN REV. B
	AD7688	562Kb / 29P	16-Bit, 1.5 LSB INL, 500 kSPS PulSAR Differential ADC in MSOP/LFCSP
	AD7691	898Kb / 28P	18-Bit, 1.5 LSB INL, 250 kSPS PulSAR Differential ADC in MSOP/QFN REV. 0
	AD7687	616Kb / 27P	16-Bit, 1.5 LSB INL, 250 kSPS PulSAR Differential ADC in MSOP
	AD7688	535Kb / 28P	16-Bit, 1.5 LSB INL, 500 kSPS PulSAR REV. B
	AD7690BRMZ	620Kb / 24P	18-Bit, 1.5 LSB INL, 400 kSPS PulSAR짰 Differential ADC in MSOP/QFN REV. B
	AD7686BRM	611Kb / 28P	16-Bit, 500 kSPS PulSAR ADC in MSOP/QFN REV. B
	AD7686CRMZ	611Kb / 28P	16-Bit, 500 kSPS PulSAR ADC in MSOP/QFN REV. B

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