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| 型號： | AD7400AYNSZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 4/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MODULATOR SIGMADELTA 8-SMD |
| 產(chǎn)品變化通告： | AD7400AYNSZ Discontinuation 23/Mar/2012 |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 類型： | 調(diào)制器 |
| 分辨率（位）： | 16 b |
| 采樣率（每秒）： | 10M |
| 數(shù)據(jù)接口： | 串行 |
| 電壓電源： | 單電源 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SMD，鷗翼型 |
| 供應(yīng)商設(shè)備封裝： | 8-DIP 鷗翼型 |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 798 (CN2011-ZH PDF) |
AD7400A
Data Sheet
Rev. D | Page 12 of 20
TERMINOLOGY
Differential Nonlinearity
Differential nonlinearity is the difference between the measured
and the ideal 1 LSB change between any two adjacent codes in
the ADC.
Integral Nonlinearity
Integral nonlinearity is the maximum deviation from a straight
line passing through the endpoints of the ADC transfer function.
The endpoints of the transfer function are specified negative
full scale, 250 mV (VIN+ VIN), Code 7169, and specified
positive full scale, +250 mV (VIN+ VIN), Code 58,366 for
the 16-bit level.
Offset Error
Offset is the deviation of the midscale code (Code 32,768 for
the 16-bit level) from the ideal VIN+ VIN (that is, 0 V).
Gain Error
Gain error includes both positive full-scale gain error and
negative full-scale gain error. Positive full-scale gain error is the
deviation of the specified positive full-scale code (58,366 for the
16-bit level) from the ideal VIN+ VIN (+250 mV) after the
offset error is adjusted out. Negative full-scale gain error is the
deviation of the specified negative full-scale code (7169 for the
16-bit level) from the ideal VIN+ VIN (250 mV) after the
offset error is adjusted out. Gain error includes reference error.
Signal-to-Noise and Distortion (SINAD) Ratio
This ratio is the measured ratio of signal-to-noise and distortion
at the output of the ADC. The signal is the rms amplitude of the
fundamental. Noise is the sum of all nonfundamental signals up
to half the sampling frequency (fS/2), excluding dc. The ratio is
dependent on the number of quantization levels in the digitization
process; the more levels, the smaller the quantization noise. The
theoretical signal-to-noise and distortion ratio for an ideal N-bit
converter with a sine wave input is given by
Signal-to-Noise and Distortion = (6.02N + 1.76) dB
Therefore, for a 12-bit converter, SINAD is 74 dB.
Effective Number of Bits (ENOB)
The ENOB is defined by
ENOB = (SINAD 1.76)/6.02
Total Harmonic Distortion (THD)
THD is the ratio of the rms sum of harmonics to the
fundamental. For the AD7400A, 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
through the sixth harmonics.
Peak Harmonic or Spurious Noise
Peak harmonic or spurious noise is defined as the ratio of the rms
value of the next largest component in the ADC output spectrum
(up to fS/2, excluding dc) to the rms value of the fundamental.
Normally, the value of this specification is determined by the
largest harmonic in the spectrum, but for ADCs where the
harmonics are buried in the noise floor, it is a noise peak.
Common-Mode Rejection Ratio (CMRR)
CMRR is defined as the ratio of the power in the ADC output at
±250 mV frequency, f, to the power of a 250 mV p-p sine wave
applied to the common-mode voltage of VIN+ and VIN of
frequency fS as
CMRR (dB) = 10 log(Pf/PfS)
where:
Pf is the power at frequency f in the ADC output.
PfS is the power at frequency fS in the ADC output.
Power Supply Rejection Ratio (PSRR)
Variations in power supply affect the full-scale transition but
not the converter linearity. PSRR is the maximum change in the
specified full-scale (±250 mV) transition point due to a change
in power supply voltage from the nominal value (see Figure 6).
Isolation Transient Immunity
The isolation transient immunity specifies the rate of rise/fall of
a transient pulse applied across the isolation boundary beyond
which clock or data is corrupted. (The AD7400A was tested using
a transient pulse frequency of 100 kHz.)
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| AD7400AYNSZREEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:Isolated Sigma-Delta Modulator |
| AD7400AYNSZREEL7 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Isolated Sigma-Delta Modulator |
| AD7400AYRWZ | 功能描述:IC MODULATOR SIGMA-DELTA 16SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| AD7400AYRWZ1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Isolated Sigma-Delta Modulator |
| AD7400AYRWZREEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:Isolated Sigma-Delta Modulator |
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