參數(shù)資料
型號： MAX1090
廠商： Maxim Integrated Products, Inc.
英文描述： 400ksps, +5V, 8-/4-Channel, 10-Bit ADCs with +2.5V Reference and Parallel Interface
中文描述： 400ksps、+5V、8/4通道、10位ADC，帶有+2.5V電壓基準及并行接口
文件頁數(shù)： 13/20頁
文件大?。?/td> 404K
代理商： MAX1090
can be used. At power-up, the MAX1090/MAX1092
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 frequen-
cy 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 float-
ing.
External Clock Mode
To select the external clock mode, bits D6 and D7 of
the control byte must be set to one. Figure 6 shows the
clock and
WR
timing relationship for internal (Figure 6a)
and external (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 MAX1090/MAX1092 with clock frequen-
M
400ksps, +5V, 8-/4-Channel, 10-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
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)
相關(guān)PDF資料
PDF描述
MAX1090BCEI 400ksps, +5V, 8-/4-Channel, 10-Bit ADCs with +2.5V Reference and Parallel Interface
MAX1092AEEG 400ksps, +5V, 8-/4-Channel, 10-Bit ADCs with +2.5V Reference and Parallel Interface
MAX1092BCEG 400ksps, +5V, 8-/4-Channel, 10-Bit ADCs with +2.5V Reference and Parallel Interface
MAX1092BEEG 400ksps, +5V, 8-/4-Channel, 10-Bit ADCs with +2.5V Reference and Parallel Interface
MAX1107CUB Single-Supply, Low-Power, Serial 8-Bit ADCs
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1090ACEI 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
MAX1090ACEI+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 400ksps 8Ch 10-Bit w/Internal 2.5V ref 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
MAX1090ACEI+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 400ksps 8Ch 10-Bit w/Internal 2.5V ref 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
MAX1090ACEI-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
MAX1090AEEI 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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