參數(shù)資料
型號(hào)： MAX194AEWE
廠(chǎng)商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： ADC
英文描述： Circular Connector; No. of Contacts:22; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:13; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:13-35 RoHS Compliant: No
中文描述： 1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16
封裝： SO-16
文件頁(yè)數(shù)： 23/24頁(yè)
文件大?。?/td> 223K
代理商： MAX194AEWE
M
14-Bit, 85ksps ADC with 10μA S hutdown
______________________________________________________________________________________
23
measure of the ADC’s usefulness. Figure 26 shows the
effective number of bits as a function of the MAX194’s
input frequency calculated from the SINAD.
T otal Harmonic Distortion
If a pure sine wave is input to an ADC, AC integral non-
linearity (INL) of an ADC’s transfer function results in
harmonics of the input frequency being present in the
sampled output data.
Total Harmonic Distortion (THD) is the ratio of the RMS
sum of all the harmonics (in the frequency band above
DC and below one-half the sample rate, but not includ-
ing the DC component) to the RMS amplitude of the
fundamental frequency. This is expressed as follows:
(V
2
2
+ V
3
2
+ V
4
2
+ ... + V
N
2
)
THD = 20log——————————————
V1
where V
1
is the fundamental RMS amplitude, and V
2
through V
N
are the amplitudes of the 2nd through Nth
harmonics. The THD specification in the Electrical
Characteristics includes the 2nd through 5th harmon-
ics. In the MAX194, this distortion is caused primarily
by the changes in on-resistance of the AIN sampling
switches with changing input voltage. These resistance
changes, together with the DAC’s capacitance (which
can also vary with input voltage), cause a varying time
delay for AC signals, which causes significant distortion
at moderately high frequencies (Figure 27).
CK
(2 x CLK)
J
Q
+5V
K
CLK
BP/UP/SHDN
CK
2 x CLK
1/2 74HC73
CLOCK SHUTDOWN
Q
(CLK)
J
(CLOCK SHUTDOWN)
MAX194
Figure 24. Circuit to Stop Free-Running Asynchronous CLK
-150
-130
-110
-90
0
5
10
20
25
40
-30
-50
-70
-10
FREQUENCY (kHz)
S
15
30
35
f
IN
= 1kHz
f
S
= 85kHz
T
A
= +25°C
Figure 25. MAX194 FFT Plot
相關(guān)PDF資料
PDF描述
MAX194BCWE 14-Bit, 85ksps ADC with 10A Shutdown
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MAX194AMDE 14-Bit, 85ksps ADC with 10A Shutdown
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX194AEWE/GG8 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14-Bit 85ksps ADC with 10uA Shutdown 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX194AEWE+ 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX194AEWE+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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX194AEWE-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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX194AMDE 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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