MAX1400
+5V, 18-Bit, Low-Power, Multichannel,
Oversampling (Sigma-Delta) ADC
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19
Table 10. Transfer-Function Register Mapping—Gain-Cal Mode (M1 = 1, M0 = 0)
X = Don’t Care.
First Bit (Data MSB)
RESERVED BITS
CHANNEL ID TAG
D1
‘0’
D0
‘0’
CID0
DATA BITS
CID2
CID1
D9
D5
D8
D7
D6
D2
DATA BITS
D4
D3
(Data LSB)
(LSB)
D17
D13
D16
D15
D14
D10
DATA BITS
D12
D11
0
DIFF
0
A1
0
1
0
1
0
1
2
0
2
1
0
X
0
X
1
0
X
0
X
2
1
2
1
0
1
0
2
SCAN
0
1
TRANSFER
FUNCTION REG.
1
X
1
X
3
1
0
X
0
X
3
1
0
X
1
X
1
3
1
0
A0
1
0
1
X
0
1
0
3
X
CALGAIN+–CALGAIN-
AIN2–AIN6
AIN4–AIN6
AIN3–AIN6
AIN1–AIN6
CALGAIN+–CALGAIN-
CHANNEL
1
CALGAIN+–CALGAIN-
CALOFF+–CALOFF-
AIN1–AIN2
CALGAIN+–CALGAIN-
AIN5–AIN6
1
X
1
X
3
1
3
2
1
X
AIN5–AIN6
CALGAIN+–CALGAIN-
CALOFF+–CALOFF-
AIN3–AIN4
1
Do not use
0
1
Do not use
1
Data Register (Read-Only)
The data register is a 24-bit, read-only register. Any
attempt to write data to this location will have no effect.
If a write operation is attempted, 8 bits of data must be
clocked into the part before it will return to its normal
idle mode, expecting a write to the communications
register.
Data is output MSB first, followed by three reserved 0
bits and a 3-bit channel ID tag indicating the channel
from which the data originated.
D17–D0: The conversion result. D17 is the MSB. The
result is in offset binary format. 00 0000 0000 0000
0000 represents the minimum value and 11 1111 1111
1111 1111 represents the maximum value. Inputs
exceeding the available input range are limited to the
corresponding minimum or maximum output values.
0: These reserved bits will always be 0.
CID2–0: Channel ID tag (Table 11).
Data Register (Read-Only) Bits
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相关代理商/技术参数
MAX1400CAI+T 功能描述:模数转换器 - ADC 18-Bit 5Ch 4.8ksps 2.5V 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
MAX1400CAI+W 制造商:Maxim Integrated Products 功能描述:
MAX1400CAI-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
MAX1400EAI 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
MAX1400EAI+ 功能描述:模数转换器 - ADC 18-Bit 5Ch 4.8ksps 2.5V 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
MAX1400EAI+T 功能描述:模数转换器 - ADC 18-Bit 5Ch 4.8ksps 2.5V 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
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MAX1400EVKIT 制造商:Maxim Integrated Products 功能描述:MAX1402 EVALUATION KIT/EVALUATION SYSTEM - Boxed Product (Development Kits)