參數(shù)資料
型號(hào)： AD7767BRUZ-2-RL7
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 7/25頁(yè)
文件大?。?/td> 0K
描述： ADC 24BIT 8.5MW 32KSPS 16TSSOP
標(biāo)準(zhǔn)包裝： 1,000
位數(shù)： 24
采樣率（每秒）： 32k
數(shù)據(jù)接口： 串行
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 18mW
電壓電源： 模擬和數(shù)字
工作溫度： -40°C ~ 105°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 16-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 16-TSSOP
包裝： 帶卷 (TR)
輸入數(shù)目和類(lèi)型： 1 個(gè)差分，單極
配用： EVAL-AD7767EDZ-ND - BOARD EVAL AD7767 128KSPS 108DB
EVAL-AD7767-1EDZ-ND - BOARD EVAL AD7767-1 64KSPS 111DB
AD7767
Rev. C | Page 14 of
24
TERMINOLOGY
Signal-to-Noise Ratio (SNR)
SNR is the ratio of the actual input signal’s rms value 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.
Total Harmonic Distortion (THD)
THD is the ratio of the rms sum of harmonics to the fundamen-
tal. For the AD7767, 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 harmonics.
Nonharmonic Spurious-Free Dynamic Range (SFDR)
SFDR is the ratio of the rms signal amplitude to the rms value
of the peak spurious spectral component, excluding harmonics.
Dynamic Range
Dynamic range is the ratio of the rms value of the full scale to
the rms noise measured with the inputs shorted together. The
value for the dynamic range is expressed in decibels.
Intermodulation Distortion (IMD)
With inputs consisting of sine waves at two frequencies, fa
and fb, any active device with nonlinearities creates distortion
products at sum and difference frequencies of mfa ± nfb, where
m, n = 0, 1, 2, 3, and so on. Intermodulation distortion terms
are those for which neither m nor n are equal to 0. For example,
the second-order terms include (fa + fb) and (fa fb), and the
third-order terms include (2fa + fb), (2fa fb), (fa + 2fb), and
(fa 2fb).
The AD7767 is tested using the CCIF standard, where two input
frequencies near the top end of the input bandwidth are used.
In this case, the second-order terms are usually distanced in
frequency from the original sine waves, and the third-order
terms are usually at a frequency close to the input frequencies.
As a result, the second- and third-order terms are specified
separately. The calculation of the intermodulation distortion is
as per the THD specification, where it is the ratio of the rms
sum of the individual distortion products to the rms amplitude
of the sum of the fundamentals expressed in decibels.
Integral Nonlinearity (INL)
INL is the maximum deviation from a straight line passing
through the endpoints of the ADC transfer function.
Differential Nonlinearity (DNL)
DNL is the difference between the measured and the ideal
1 LSB change between any two adjacent codes in the ADC.
Zero Error
Zero error is the difference between the ideal midscale input
voltage (when both inputs are shorted together) and the actual
voltage producing the midscale output code.
Zero Error Drift
Zero error drift is 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
LSB above the nominal negative full scale for an analog voltage.
The last transition (from 011 … 110 to 011 … 111) should occur
1 LSB below the nominal full scale for an analog voltage. 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
Gain error drift is 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.
Common-Mode Rejection Ratio (CMRR)
CMRR is defined as the ratio of the power in the ADC output
at full-scale frequency f to the power of a 100 mV sine wave
applied to the common-mode voltage of the VIN+ and VIN
inputs at frequency fS.
CMRR
(dB) = 10 log(Pf/PfS)
where Pf is the power at the frequency f in the ADC output, and
PfS
is the power at the frequency fS in the ADC output.
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參數(shù)描述
AD7767BRUZ-RL7 功能描述:ADC 24BIT 15MW 128KSPS 16TSSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類(lèi)型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類(lèi)型:1 個(gè)單端，單極；1 個(gè)單端，雙極
AD7768-4BSTZ 功能描述:24 Bit Analog to Digital Converter 4 Input 4 Sigma-Delta 64-LQFP (10x10) 制造商:analog devices inc. 系列:- 包裝:托盤(pán) 零件狀態(tài):有效 位數(shù):24 采樣率（每秒）:256k 輸入數(shù):4 輸入類(lèi)型:差分 數(shù)據(jù)接口:SPI 配置:ADC 無(wú)線電 - S/H:ADC:- A/D 轉(zhuǎn)換器數(shù):4 架構(gòu):三角積分 參考類(lèi)型:外部 電壓 - 電源，模擬:2 V ~ 5.5 V 電壓 - 電源，數(shù)字:- 特性:同步采樣 工作溫度:-40°C ~ 150°C 封裝/外殼:64-LQFP 供應(yīng)商器件封裝:64-LQFP（10x10） 標(biāo)準(zhǔn)包裝:1
AD7768-4BSTZ-RL 功能描述:24 Bit Analog to Digital Converter 4 Input 4 Sigma-Delta 64-LQFP (10x10) 制造商:analog devices inc. 系列:- 包裝:帶卷（TR） 零件狀態(tài):有效 位數(shù):24 采樣率（每秒）:256k 輸入數(shù):4 輸入類(lèi)型:差分 數(shù)據(jù)接口:SPI 配置:ADC 無(wú)線電 - S/H:ADC:- A/D 轉(zhuǎn)換器數(shù):4 架構(gòu):三角積分 參考類(lèi)型:外部 電壓 - 電源，模擬:2 V ~ 5.5 V 電壓 - 電源，數(shù)字:- 特性:同步采樣 工作溫度:-40°C ~ 150°C 封裝/外殼:64-LQFP 供應(yīng)商器件封裝:64-LQFP（10x10） 標(biāo)準(zhǔn)包裝:1,500
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AD7768BSTZ 功能描述:24 Bit Analog to Digital Converter 8 Input 8 Sigma-Delta 64-LQFP (10x10) 制造商:analog devices inc. 系列:- 包裝:托盤(pán) 零件狀態(tài):有效 位數(shù):24 采樣率（每秒）:256k 輸入數(shù):8 輸入類(lèi)型:差分，個(gè)偽差分 數(shù)據(jù)接口:SPI，DSP 配置:ADC 無(wú)線電 - S/H:ADC:- A/D 轉(zhuǎn)換器數(shù):8 架構(gòu):三角積分 參考類(lèi)型:外部 電壓 - 電源，模擬:2 V ~ 5.5 V 電壓 - 電源，數(shù)字:2 V ~ 3.6 V 特性:同步采樣 工作溫度:-40°C ~ 105°C 封裝/外殼:64-LQFP 供應(yīng)商器件封裝:64-LQFP（10x10） 標(biāo)準(zhǔn)包裝:1
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