參數(shù)資料
型號(hào)： MAX105
廠商： Maxim Integrated Products, Inc.
英文描述： Dual, 6-Bit, 800Msps ADC with On-Chip, Wideband Input Amplifier
中文描述： 雙路、6位、800Msps ADC，帶有片上寬帶輸入放大器
文件頁(yè)數(shù)： 19/21頁(yè)
文件大?。?/td> 669K
代理商： MAX105
clock design limits aperture jitter to typically 1.5ps
RMS
.
Figure 11 depicts the aperture jitter (t
AJ
), which is the
sample-to-sample variation in the aperture delay.
Aperture delay (t
AD
) is the time defined between the
rising edge of the sampling clock and the instant when
an actual sample is taken (
Figure 11).
Signal-to-Noise Ratio (SNR)
For a waveform perfectly reconstructed from digital
samples, the theoretical maximum SNR is the ratio of
the full-scale analog input (RMS value) to the RMS
quantization error (residual error). The ideal, theoretical
minimum analog-to-digital noise is caused by quantiza-
tion error only and results directly from the ADC
’
s reso-
lution (N-Bits):
SNR
MAX[dB]
= 6.02
dB
x N + 1.76
dB
In reality, there are other noise sources besides quanti-
zation noise: thermal noise, reference noise, clock jitter
(see
Aperture Uncertainties
). SNR is computed by tak-
ing the ratio of the RMS signal to the RMS noise, which
includes all spectral components minus the fundamen-
tal, the first four harmonics, and the DC offset.
Signal-to-Noise Plus Distortion (SINAD)
SINAD is computed by taking the ratio of the RMS sig-
nal to all spectral components minus the fundamental
and the DC offset.
Effective Number of Bits (ENOB)
ENOB specifies the dynamic performance of an ADC at
a specific input frequency, amplitude, and sampling
rate relative to an ideal ADC
’
s quantization noise. For a
full-scale input ENOB is computed from:
ENOB = (SINAD - 1.76
dB
) / 6.02
dB
Total Harmonic Distortion (THD)
THD is typically the ratio of the RMS sum of the first four
harmonics of the input signal to the fundamental itself.
This is expressed as:
where V1 is the fundamental amplitude, and V
through
V
are the amplitudes of the 2nd- through 5th-order har-
monics.
Spurious-Free Dynamic Range (SFDR)
SFDR is the ratio expressed in decibels of the RMS
amplitude of the fundamental to the RMS value of the
next largest spurious component, excluding DC offset.
Two-Tone Intermodulation
Distortion (IMD)
The two-tone IMD is the ratio expressed in decibels of
either input tone to the worst 3rd-order (or higher) inter-
modulation products. The individual input tone levels
are at -7dB full-scale and their envelope peaks at -1dB
full-scale.
Chip Information
TRANSISTOR COUNT: 12,286
THD
x
V
V
V
V
V
=
+
+
+
20
22
32
42
52
12
log (
)/
)
M
Dual, 6-Bit, 800Msps ADC with On-Chip,
Wideband Input Amplifier
______________________________________________________________________________________
19
CLK+
ANALOG
INPUT
SAMPLING
INSTANT
t
AW
t
AD
t
AJ
CLK-
t
AW
: APERTURE WIDTH
t
AJ
: APERTURE JITTER
t
AD
: APERTURE DELAY
MAX105
Figure 11. Aperture Timing
相關(guān)PDF資料
PDF描述
MAX105ECS Dual, 6-Bit, 800Msps ADC with On-Chip, Wideband Input Amplifier
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1057 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:10-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports
MAX1057BETM 功能描述:ADC / DAC多通道 RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類(lèi)型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40
MAX1057BETM+ 功能描述:ADC / DAC多通道 10Bit AD/DACs w/FIFO Temp Sns & GPIO Port RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類(lèi)型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40
MAX1057BETM+T 功能描述:ADC / DAC多通道 10Bit AD/DACs w/FIFO Temp Sns & GPIO Port RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類(lèi)型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40
MAX1057BETM-T 功能描述:ADC / DAC多通道 RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類(lèi)型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40
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