参数资料
型号: MAX1400CAI+
厂商: Maxim Integrated Products
文件页数: 25/34页
文件大小: 0K
描述: IC ADC 18BIT LP 28-SSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 46
位数: 18
采样率(每秒): 480
数据接口: QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 1.25mW
电压电源: 模拟和数字
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 28-SSOP(0.209",5.30mm 宽)
供应商设备封装: 28-SSOP
包装: 管件
输入数目和类型: 3 个差分,单极;3 个差分,双极;5 个伪差分,单极;5 个伪差分,双极
MAX1400
+5V, 18-Bit, Low-Power, Multichannel,
Oversampling (Sigma-Delta) ADC
______________________________________________________________________________________
31
Strain Gauge Operation
Connect the differential inputs of the MAX1400 to the
bridge network of the strain gauge. In Figure 16, the
analog positive supply voltage powers the bridge net-
work and the MAX1400 along with its reference voltage.
The on-chip PGA allows the MAX1400 to handle an
analog input voltage range as low as 20mV full scale.
The differential inputs of the part allow this analog input
range to have an absolute value anywhere between
AGND and V+.
Temperature Measurement
Figure 17 shows a connection from a thermocouple to
the MAX1400. In this application, the MAX1400 is oper-
ated in its buffered mode to allow large decoupling
capacitors on the front end. These decoupling capaci-
tors eliminate any noise pickup form the thermocouple
leads. When the MAX1400 is operated in buffered
mode, it has a reduced common-mode range. In order
to place the differential voltage from the thermocouple
on a suitable common-mode voltage, the AIN2 input of
the MAX1400 is biased at the reference voltage, +2.5V.
DIVIDER
CLOCK
GEN
MODULATOR
DIGITAL
FILTER
V+
VDD
AGND
REFIN+
MUXOUT+
ADCIN+
REFIN-
MUXOUT-
ADCIN-
AGND
DGND
AIN1
AIN2
SWITCHING
NETWORK
ACTIVE
GAUGE
DUMMY
GAUGE
RREF
ANALOG SUPPLY
R
ADDITIONAL
ANALOG
AND
CALIBRATION
CHANNELS
INTERFACE
AND
CONTROL
SCLK
DIN
DOUT
INT
CS
RESET
CLKIN
CLKOUT
PGA
DAC
MAX1400
BUFFER
Figure 16. Strain-Gauge Application with MAX1400
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相关代理商/技术参数
参数描述
MAX1400CAI+ 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+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