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參數(shù)資料
| 型號(hào)： | MAX1292AEEG |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | 400ksps, +5V, 8-/4-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
| 中文描述： | 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24 |
| 封裝： | 0.150 INCH, QSOP-28 |
| 文件頁數(shù)： | 13/20頁 |
| 文件大?。?/td> | 382K |
| 代理商： | MAX1292AEEG |
can be used. At power-up, the MAX1290/MAX1292
enter the default external clock mode.
Internal Clock Mode
Select internal clock mode to release the μP from the
burden of running the SAR conversion clock. To select
this mode, bit D7 of the control byte must be set to 1
and bit D6 must be set to 0; the internal clock frequency
is then selected, resulting in a 3.6μs conversion time.
When using the internal clock mode, connect the CLK
pin either high or low to prevent the pin from floating.
External Clock Mode
To select the external clock mode, bits D6 and D7 of
the control byte must be set to 1. Figure 6a shows the
clock and
WR
timing relationship for internal and exter-
nal (Figure 6b) acquisition modes with an external
clock. Proper operation requires a 100kHz to 7.6MHz
clock frequency with 30% to 70% duty cycle. Operating
the MAX1290/MAX1292 with clock frequencies lower
than 100kHz is not recommended, because it causes a
voltage droop across the hold capacitor in the T/H
stage that results in degraded performance.
M
400ksps, +5V, 8-/4-Channel, 12-Bit ADCs
with +2.5V Reference and Parallel Interface
______________________________________________________________________________________
13
WR
CLK
CLK
WR
WR GOES HIGH WHEN CLK IS HIGH.
WR GOES HIGH WHEN CLK IS LOW.
t
CWS
t
CH
t
CL
t
CP
t
CWH
ACQUISITION STARTS
ACQUISITION STARTS
CONVERSION STARTS
CONVERSION STARTS
ACQUISITION ENDS
ACQUISITION ENDS
ACQMOD = "0"
ACQMOD = "0"
Figure 6a. External Clock and
WR
Timing (Internal Acquisition Mode)
WR
CLK
CLK
WR
WR GOES HIGH WHEN CLK IS HIGH.
WR GOES HIGH WHEN CLK IS LOW.
t
DH
t
DH
t
CWH
t
CWS
ACQUISITION STARTS
CONVERSION STARTS
CONVERSION STARTS
ACQUISITION ENDS
ACQUISITION ENDS
ACQMOD = "1"
ACQMOD = "1"
ACQMOD = "0"
ACQMOD = "0"
Figure 6b. External Clock and
WR
Timing (External Acquisition Mode)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1292AEEG+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 4Ch 400ksps 5.5V 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 |
| MAX1292AEEG+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 4Ch 400ksps 5.5V 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 |
| MAX1292AEEG-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 |
| MAX1292BCEG | 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 |
| MAX1292BCEG+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 4Ch 400ksps 5.5V 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 |
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