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參數(shù)資料
| 型號(hào)： | MCP3304 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 13-Bit Differential Input, Low Power A/D Converter with SPI Serial Interface |
| 中文描述： | 13位差分輸入，低功耗的A / D轉(zhuǎn)換器具有SPI串行接口 |
| 文件頁數(shù)： | 21/40頁 |
| 文件大小： | 666K |
| 代理商： | MCP3304 |
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2002 Microchip Technology Inc.
DS21697B-page 21
MCP3302/04
6.7
Utilizing the Digital and Analog
Ground Pins
The MCP3302/04 devices provide both digital and ana-
log ground connections to provide another means of
noise reduction. As shown in Figure 6-11, 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 sub-
strate which has a resistance of 5 -10
.
If no ground plane is utilized, then both grounds must
be connected to V
SS
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 con-
nected to the analog ground plane, as shown in
Figure 6-11. Following these steps will reduce the
amount of digital noise from the rest of the board being
coupled into the A/D Converter.
FIGURE 6-11:
Digital Ground Pins.
Separation of Analog and
MCP3302/04
Analog Ground Plane
DGND
AGND
V
DD
0.1 μF
Substrate
5 - 10
Digital Side
-SPI Interface
-Shift Register
-Control Logic
Analog Side
-Sample Cap
-Capacitor Array
-Comparator
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP3304-BI/P | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 13-bit Diff In 4 Chl RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MCP3304-BI/SL | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 13-bit Diff In 4 Chl RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MCP3304-BI/ST | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:13-Bit Differential Input, Low Power A/D Converter with SPI Serial Interface |
| MCP3304-CI/P | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 13-bit Diff In 4 Chl RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MCP3304-CI/SL | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 13-bit Diff In 4 Chl RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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