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参数资料
| 型号： | MAX1139 |
| 厂商： | Maxim Integrated Products, Inc. |
| 元件分类： | 串行ADC |
| 英文描述： | 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial 10-Bit ADCs |
| 中文描述： | 2.7V至3.6V及4.5V至5.5V、低功耗、4/12通道、2线串行接口、10位ADC |
| 文件页数： | 16/22页 |
| 文件大小： | 471K |
| 代理商： | MAX1139 |
M
The device memory contains all of the conversion
results when the MAX1136
–
MAX1139 release SCL. The
converted results are read back in a first-in-first-out
(FIFO) sequence. If AIN_/REF is set to be a reference
input or output (SEL1 = 1, Table 6), AIN_/REF will be
excluded from a multichannel scan. The memory con-
tents can be read continuously. If reading continues
past the result stored in memory, the pointer will wrap
around and point to the first result. Note that only the
current conversion results will be read from memory.
The device must be addressed with a read command
to obtain new conversion results.
The internal clock mode
’
s clock stretching quiets the
SCL bus signal reducing the system noise during con-
version. Using the internal clock also frees the bus
master (typically a microcontroller) from the burden of
running the conversion clock, allowing it to perform
other tasks that do not need to use the bus.
2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
4-/12-Channel, 2-Wire Serial 10-Bit ADCs
16
______________________________________________________________________________________
B. SCAN MODE CONVERSIONS WITH INTERNAL CLOCK
S
1
SLAVE ADDRESS
A
7
1 1
R
CLOCK STRETCH
NUMBER OF BITS
P or Sr
1
8
RESULT 8 LSBs
8
RESULT 2 MSBs
A
A
1
A. SINGLE CONVERSION WITH INTERNAL CLOCK
S
1
SLAVE ADDRESS
7
1 1
R
CLOCK STRETCH
A
A
NUMBER OF BITS
P or Sr
1
8
RESULT 1 ( 2MSBs)
A
1
A
8
RESULT 1 (8 LSBs) A
8
RESULT N (8LSBs)
A
1
8
RESULT N (8MSBs)
SLAVE TO MASTER
MASTER TO SLAVE
CLOCK STRETCH
t
ACQ1
CONV2
t
ACQ2
t
CONVN
t
ACQN
t
CONV
t
ACQ
1
1
t
CONV1
Figure 10. Internal Clock Mode Read Cycles
SLAVE ADDRESS
t
CONV1
t
ACQ1
t
ACQ2
t
CONVN
t
ACQN
t
CONV
t
ACQ
NUMBER OF BITS
NUMBER OF BITS
1
8
A
1
S
1
A
7
1 1
R
S
1
7
1 1
R
P OR Sr
1
8
A
1
A
8
A
8
B. SCAN MODE CONVERSIONS WITH EXTERNAL CLOCK
1
1
SLAVE ADDRESS
P OR Sr
RESULT (8 LSBs)
8
A
1
RESULT (2 MSBs)
A. SINGLE CONVERSION WITH EXTERNAL CLOCK
SLAVE TO MASTER
MASTER TO SLAVE
RESULT 1 (2 MSBs)
RESULT 2 (8 LSBs)
RESULT N (8 LSBs)
A
1
8
RESULT N (2 MSBs)
A
Figure 11. External Clock Mode Read Cycle
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1138EEE | 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial 10-Bit ADCs |
| MAX1139EEE | Low-Voltage Adjustable Precision Shunt Regulator 3-SOT-89 -40 to 85 |
| MAX1136EUA | 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial 10-Bit ADCs |
| MAX1137EUA | 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial 10-Bit ADCs |
| MAX1150AIZS | Circular Connector; No. of Contacts:13; Series:MS27473; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:10; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:10-35 RoHS Compliant: No |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1139EEE | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1139EEE+ | 功能描述:模数转换器 - ADC 10-Bit 12Ch 94.4ksps 3.6V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1139EEE+T | 功能描述:模数转换器 - ADC 10-Bit 12Ch 94.4ksps 3.6V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1139EEE-T | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1139KEEE | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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