参数资料
型号: MAX1401EAI+T
厂商: Maxim Integrated Products
文件页数: 27/36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: 2,000
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): 750µW
电压电源: 模拟和数字
工作温度: -40°C ~ 85°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: 带卷 (TR)
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
MAX1401
+3V, 18-Bit, Low-Power, Multichannel,
Oversampling (Sigma-Delta) ADC
______________________________________________________________________________________
33
Strain-Gauge Operation
Connect the differential inputs of the MAX1401 to the
bridge network of the strain gauge. In Figure 14, the
analog positive supply voltage powers the bridge net-
work and the MAX1401 along with its reference voltage.
The on-chip PGA allows the MAX1401 to handle an
analog input voltage range as low as 10mV 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 15 shows a connection from a thermocouple to
the MAX1401. In this application, the MAX1401 is oper-
ated in its buffered mode to allow large decoupling
capacitors on the front end. These decoupling capaci-
tors eliminate any noise pickup from the thermocouple
leads. When the MAX1401 is operated in buffered mode,
it has a reduced common-mode range. In order to place
the differential voltage from the thermocouple on a suit-
able common-mode voltage, the AIN2 input of the
MAX1401 is biased at the reference voltage, +1.25V.
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
MAX1401
BUFFER
Figure 14. Strain-Gauge Application with MAX1401
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MAX1402CAI-T 功能描述:ADC / DAC多通道 RoHS:否 制造商:Texas Instruments 转换速率: 分辨率:8 bit 接口类型:SPI 电压参考: 电源电压-最大:3.6 V 电源电压-最小:2 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-40
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