參數(shù)資料
型號: MAX1011CEG
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: ADC
英文描述: Low-Power, 90Msps, 6-Bit ADC
中文描述: 1-CH 6-BIT FLASH METHOD ADC, PARALLEL ACCESS, PDSO24
封裝: 0.150 INCH, 0.025 INCH PITCH, QSOP-24
文件頁數(shù): 9/12頁
文件大小: 111K
代理商: MAX1011CEG
______________Dynamic Performanc e
Signal-to-noise and distortion (SINAD) is the ratio of the
fundamental input frequency’s RMS amplitude to all
other ADC output signals. The output spectrum is limit-
ed to frequencies above DC and below one-half the
ADC sample rate.
The theoretical minimum analog-to-digital noise is
caused by quantization error, and results directly from
the ADC’s resolution: SNR = (6.02N + 1.76)dB, where
N is the number of bits of resolution. Therefore, a per-
fect 6-bit ADC can do no better than 38dB.
The FFT Plot (see Typical Operating Characteristics)
shows the result of sampling a pure 20MHz sinusoid at
a 90MHz clock rate. This FFT plot of the output shows
the output level in various spectral bands. The plot has
been averaged to reduce the quantization noise floor
and reveal the low-amplitude spurs. This emphasizes the
excellent spurious-free dynamic range of the MAX1011.
The effective resolution (or effective number of bits) the
ADC provides can be measured by transposing the
equation that converts resolution to SINAD: N= (SINAD
-1.76)/ 6.02 (see Typical Operating Characteristics).
M
Low-Power, 90Msps, 6-Bit ADC
_______________________________________________________________________________________
9
Figure 9. Ideal Transfer Function
111111
O
111110
111101
100001
100000
011111
011110
000011
000010
000001
000000
-FSR
2
0
1LSB
INPUT VOLTAGE (IN+ TOIN-)
FSR
2
Figure 8. MAX1011 Timing Diagram
DATA OUT
1.4V
DATA VALID N - 1
DATA VALID N
1.4V
50%
t
SKEW
t
DCLK
t
AD
t
PD
TNK+
(INPUT CLOCK)
DCLK
ANALOG
INPUT
N
N + 1
N + 2
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MAX1011CEG+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low-Power 90Msps 6-Bit RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1011CEG-T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
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MAX101A 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:500Msps, 8-Bit ADC with Track/Hold