參數(shù)資料
型號: MAX1238MEEE+T
廠商: Maxim Integrated Products
文件頁數(shù): 13/22頁
文件大?。?/td> 0K
描述: IC ADC 12BIT SERIAL 16-QSOP
標準包裝: 2,500
位數(shù): 12
采樣率(每秒): 94.4k
數(shù)據(jù)接口: I²C,串行
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 666.7mW
電壓電源: 單電源
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-SSOP(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 16-QSOP
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 12 個單端,單極;12 個單端,雙極;6 個差分,單極;6 個差分,雙極
2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
4-/12-Channel, 2-Wire Serial, 12-Bit ADCs
20
______________________________________________________________________________________
Effective Number of Bits
Effective number of bits (ENOB) indicates the global
accuracy of an ADC at a specific input frequency and
sampling rate. An ideal ADC’s error consists of quanti-
zation noise only. With an input range equal to the
ADC’s full-scale range, calculate the ENOB as follows:
ENOB = (SINAD - 1.76)/6.02
Total Harmonic Distortion
Total harmonic distortion (THD) is the ratio of the RMS
sum of the input signal’s first five harmonics to the fun-
damental itself. This is expressed as:
where V1 is the fundamental amplitude, and V2 through
V5 are the amplitudes of the 2nd- through 5th-order
harmonics.
Spurious-Free Dynamic Range
Spurious-free dynamic range (SFDR) is the ratio of the
RMS amplitude of the fundamental (maximum signal
component) to the RMS value of the next largest distor-
tion component.
THD
VVV
V
log
++
+
20
2
3
2
4
2
5
2
1
SINAD dB
SignalRMS
NoiseRMS THDRMS
(
)
log
+
20
*RC NETWORK IS OPTIONAL
**AIN11/REF (MAX1238/MAX1239)
*RS
ANALOG
INPUTS
μC
SDA
SCL
GND
RC NETWORK*
VDD
SDA
SCL
2k
Ω
AIN0
AIN1
AIN3**/REF
3.3V or 5V
5V
RP
CREF
RP
5V
MAX1236
MAX1237
MAX1238
MAX1239
0.1
μF
0.1
μF
Typical Operating Circuit
SDA
SCL
AIN3/REF
1
2
8
7
VDD
GND
AIN1
AIN2
AIN0
MAX
TOP VIEW
3
4
6
5
MAX1236
MAX1237
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
AIN0
AIN8
AIN9
AIN10
AIN11/REF
VDD
GND
SDA
SCL
MAX1238
MAX1239
QSOP
AIN1
AIN2
AIN5
AIN3
AIN4
AIN6
AIN7
Pin Configurations
MAX1236–MAX1239
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1239EEE 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
MAX1239EEE/GH9 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
MAX1239EEE/GH9-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
MAX1239EEE+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 12Ch 94.4ksps 3.6V 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1239EEE+ 制造商:Maxim Integrated Products 功能描述:CONVERTOR AD ((NW))