参数资料
型号: MCP3302-BI/SL
厂商: Microchip Technology
文件页数: 14/48页
文件大小: 0K
描述: IC ADC 13BIT 2.7V 2CH SPI 14SOIC
标准包装: 57
位数: 13
采样率(每秒): 100k
数据接口: 串行,SPI?
转换器数目: 1
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 14-SOIC(0.154",3.90mm 宽)
供应商设备封装: 14-SOIC
包装: 管件
输入数目和类型: 4 个单端,单极;2 个差分,单极
产品目录页面: 672 (CN2011-ZH PDF)
其它名称: MCP3302BI/SL
2011 Microchip Technology Inc.
DS21697F-page 21
MCP3302/04
5.7
Utilizing the Digital and Analog
Ground Pins
The MCP3302/04 devices provide both digital and
analog ground connections to provide another means
of noise reduction. As shown in Figure 5-11, the analog
and digital circuitry are separated internal to the device.
This reduces noise from the digital portion of the device
being coupled into the analog portion of the device. The
two grounds are connected internally through the
substrate which has a resistance of 5 -10.
If no ground plane is utilized, then both grounds must
be connected to VSS on the board. If a ground plane is
available, both digital and analog ground pins should
be connected to the analog ground plane. If both an
analog and a digital ground plane are available, both
the digital and the analog ground pins should be
connected to the analog ground plane, as shown in
Figure 5-11. Following these steps will reduce the
amount of digital noise from the rest of the board being
coupled into the A/D Converter.
FIGURE 5-11:
Separation of Analog and
Digital Ground Pins.MCP3302/04.
MCP3302/04
Analog Ground Plane
DGND
AGND
VDD
0.1 F
Substrate
5 - 10
Digital Side
-SPI Interface
-Shift Register
-Control Logic
Analog Side
-Sample Cap
-Capacitor Array
-Comparator
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MCP3302-CI/P 功能描述:模数转换器 - ADC 13-bit Diff In 2 Chl 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
MCP3302-CI/P 制造商:Microchip Technology Inc 功能描述:A/D Converter (A-D) IC
MCP3302-CI/SL 功能描述:模数转换器 - ADC 13-bit Diff In 2 Chl 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
MCP3302-CI/ST 功能描述:模数转换器 - ADC 13-bit Diff In 2 Chl 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
MCP3302I/P 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:13-Bit Differential Input, Low Power A/D Converter with SPI Serial Interface