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參數(shù)資料
| 型號： | MCP6S26 |
| 廠商： | Microchip Technology Inc. |
| 元件分類： | FPGA |
| 英文描述： | 400000 SYSTEM GATE 2.5 VOLT FPGA - NOT RECOMMENDED for NEW DESIGN |
| 中文描述： | 單端，軌至軌I / O，低增益美國PGA |
| 文件頁數(shù)： | 27/43頁 |
| 文件大?。?/td> | 880K |
| 代理商： | MCP6S26 |
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2003 Microchip Technology Inc.
DS21117A-page 27
MCP6S21/2/6/8
6.4.5
EXPANDED INPUT PGA
Figure 6-8 shows cascaded MCP6S28s that provide
up to 15 input channels. Obviously, Sensors #7-14
have a high total gain range available, as explained in
Section 6.4.3, “Extended Gain Range”. These devices
can be daisy chained (Section 5.3, “Daisy Chain
Configuration”).
FIGURE 6-8:
PGA with Expanded Inputs.
6.4.6
PICmicro
MCU WITH EXPANDED
INPUT CAPABILITY
Figure 6-9 shows an MCP6S28 driving an analog input
to a PICmicro
microcontroller. This greatly expands
the input capacity of the microcontroller, while adding
the ability to select the appropriate gain for each
source.
FIGURE 6-9:
PICmicro Microcontroller.
Expanded Input for a
6.4.7
ADC DRIVER
The family of PGA’s is well suited for driving Analog-to-
Digital Converters (ADC). The binary gains (1, 2, 4, 8,
16 and 32) effectively add five more bits to the input
range (see Figure 6-10). This works well for applica-
tions needing relative accuracy more than absolute
accuracy (e.g., power monitoring).
FIGURE 6-10:
PGA as an ADC Driver.
At low gains, the ADC’s Signal-to-Noise Ratio (SNR)
will dominate since the PGAs input noise voltage den-
sity is so low (10 nV/
√
Hz @ 10 kHz, typ.). At high gains,
the PGA’s noise will dominate the SNR, but its low
noise supports most applications. Again, these PGAs
add the flexibility of selecting the best gain for an
application.
The low pass filter in the block diagram reduces the
integrated noise at the MCP6S28’s output and serves
as an anti-aliasing filter. This filter may be designed
using Microchip’s FilterLab
software, available at
www.microchip.com.
Sensors
# 0-6
Sensors
# 7-14
MCP6S28
MCP6S28
V
OUT
V
IN
MCP6S28
PICmicro
Microcontroller
SPI
V
IN
OUT
MCP6S28
Lowpass
Filter
12
MCP3201
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP6S26-I/P | 功能描述:特殊用途放大器 6-Chan. 12 MHz SPI RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| MCP6S26-I/SL | 功能描述:特殊用途放大器 6-Chan. 12 MHz SPI RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| MCP6S26-I/ST | 功能描述:特殊用途放大器 6-Chan. 12 MHz SPI RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| MCP6S26T-I/SL | 功能描述:特殊用途放大器 6-Chan. 12 MHz SPI RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| MCP6S26T-I/ST | 功能描述:特殊用途放大器 6-Chan. 12 MHz SPI RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
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