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參數(shù)資料
| 型號： | MAX189BEPA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | +5V, Low-Power, 12-Bit Serial ADCs |
| 中文描述： | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP8 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件頁數(shù)： | 14/20頁 |
| 文件大?。?/td> | 177K |
| 代理商： | MAX189BEPA |
M
+5V, Low-Power, 12-Bit S erial ADCs
14
______________________________________________________________________________________
11.8
11.6
11.4
11.2
11.0
10.8
10.6
10.4
10.2
1
10
100
1000
(UNDERSAMPLED)
E
INPUT FREQUENCY (kHz)
12.0
12.2
MAX187
MAX189
CS
SCLK
DOUT
I/O
SCK
MISO
+5V
SS
a. SPI
MAX187
MAX189
CS
SCLK
DOUT
CS
SCK
MISO
+5V
SS
b. QSPI
MAX187
MAX189
CS
SCLK
DOUT
I/O
SK
SI
c. MICROWIRE
Figure 13. Common Serial-Interface Connections to the
MAX187/MAX189
Figure 12. Effective Bits vs. Input Frequency
The effective resolution (effective number of bits) the
ADC provides can be determined by transposing the
above equation and substituting in the measured
SINAD: N = (SINAD - 1.76)/6.02. Figure 12 shows the
effective number of bits as a function of the input fre-
quency for the MAX187/MAX189.
T otal Harmonic Distortion
If a pure sine wave is sampled by an ADC at greater
than the Nyquist frequency, the nonlinearities in the
ADC’s transfer function create harmonics of the input
frequency 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:
THD = 20log
√
V
22
+ V
32
+ V
42
+ … V
N2
V
1
where V
1
is the fundamental RMS amplitude, and V
2
through V
are the amplitudes of the 2nd through Nth
harmonics. The THD specification in the Electrical
C haracteristics includes the 2nd through 5th
harmonics.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX189BEPA+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 75ksps 5.25V Precision 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX189BEWE | 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX189BEWE+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 75ksps 5.25V Precision 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX189BEWE+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 75ksps 5.25V Precision 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX189BEWE-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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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